UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                                   ----------

                                   FORM 10-Q


(Mark One)
[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
    ACT OF 1934.

For the quarterly period ended March 31, 2006

                                       OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
    EXCHANGE ACT OF 1934.

For the transition period from ___________________ to ________________________

                        Commission file number 000-51327

                      BlackRock Kelso Capital Corporation
                      -----------------------------------
             (Exact Name of Registrant as Specified in Its Charter)

Delaware                                                 20-2725151
- ------------------------------------------------------------------------------
(State or Other Jurisdiction of            (I.R.S. Employer Identification No.)
Incorporation or Organization)

40 East 52nd Street, New York, New York                              10022
- ------------------------------------------------------------------------------
(Address of Principal Executive Offices)                           (Zip Code)

Registrant's Telephone Number, Including Area Code   212-810-5800
                                                    -------------------

- -------------------------------------------------------------------------------
        Former Name, Former Address and Former Fiscal Year, if Changed
                              Since last Report.

         Indicate by check mark whether the Registrant (1) has filed all
reports required to be filed by Section 13 or 15(d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes |X| No |_|

         Indicate by check mark whether the Registrant is a large accelerated
filer, an accelerated filer or a non-accelerated filer as defined in Rule 12b-2
of the Exchange Act. Large accelerated filer |_| Accelerated filer |_|
Non-Accelerated filer |X|

         Indicate by check mark whether the Registrant is a shell company (as
defined in Rule 12b-2 of the Securities Exchange Act of 1934). Yes |_| No |X|

         The number of shares of the Registrant's common stock, $.001 par value
per share, outstanding at May 9, 2006, was 36,339,072.

BLACKROCK KELSO CAPITAL CORPORATION FORM 10-Q FOR THE QUARTER ENDED MARCH 31, 2006 Table of Contents INDEX PAGE NO. ----- -------- PART I. FINANCIAL INFORMATION Item 1. Financial Statements Statements of Assets and Liabilities as of March 31, 2006 4 (unaudited) and December 31, 2005 Statement of Operations (unaudited) for the three months 5 ended March 31, 2006 Statement of Changes in Net Assets (unaudited) for the 6 three months ended March 31, 2006 Statement of Cash Flows (unaudited) for the three months 7 ended March 31, 2006 Schedules of Investments as of March 31, 2006 (unaudited) 8 and December 31, 2005 Notes to Financial Statements (unaudited) 15 Item 2. Management's Discussion and Analysis of Financial Condition 20 and Results of Operations Item 3. Quantitative and Qualitative Disclosures about Market Risk 23 Item 4. Controls and Procedures 24 PART II. OTHER INFORMATION Item 1. Legal Proceedings 24 Item 1A. Risk Factors 24 Item 2. Unregistered Sales of Equity Securities and Use of Proceeds 24 Item 3. Defaults Upon Senior Securities 24 Item 4. Submission of Matters to a Vote of Security Holders 24 Item 5. Other Information 24 Item 6. Exhibits 25 SIGNATURES 26

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS Certain statements contained herein constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 with respect to future financial or business performance, strategies or expectations. Forward-looking statements are typically identified by words or phrases such as "trend," "opportunity," "pipeline," "believe," "comfortable," "expect," "anticipate," "current," "intention," "estimate," "position," "assume," "potential," "outlook," "continue," "remain," "maintain," "sustain," "seek," "achieve" and similar expressions, or future or conditional verbs such as "will," "would," "should," "could," "may" or similar expressions. BlackRock Kelso Capital Corporation (the "Company") cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made, and the Company assumes no duty to and does not undertake to update forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance. In addition to factors previously disclosed in the Company's Securities and Exchange Commission (the "SEC") reports and those identified elsewhere in this report, the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: (1) the introduction, withdrawal, success and timing of business initiatives and strategies; (2) changes in political, economic or industry conditions, the interest rate environment or financial and capital markets, which could result in changes in the value of the Company's assets; (3) the relative and absolute investment performance and operations of the Company's investment adviser, BlackRock Kelso Capital Advisors LLC (the "Investment Advisor"); (4) the impact of increased competition; (5) the impact of future acquisitions and divestitures; (6) the unfavorable resolution of legal proceedings; (7) the extent and timing of any share repurchases; (8) the impact, extent and timing of technological changes and the adequacy of intellectual property protection; (9) the impact of legislative and regulatory actions and reforms and regulatory, supervisory or enforcement actions of government agencies relating to the Company or the Investment Advisor; (10) terrorist activities, which may adversely affect the general economy, real estate, financial and capital markets, specific industries, and the Company and the Investment Advisor; (11) the ability of the Investment Advisor to attract and retain highly talented professionals; (12) fluctuations in foreign currency exchange rates; and (13) the impact of changes to tax legislation and, generally, the tax position of the Company. Forward-looking statements speak only as of the date they are made. The Company does not undertake, and specifically disclaims any obligation, to publicly release the result of any revisions which may be made to any forward-looking statements to reflect the occurrence of anticipated or unanticipated events or circumstances after the date of such statements.

PART I. FINANCIAL INFORMATION In this Quarterly Report, "Company", "we", "us" and "our" refer to BlackRock Kelso Capital Corporation unless the context states otherwise. Item 1. Financial Statements. BLACKROCK KELSO CAPITAL CORPORATION STATEMENTS OF ASSETS AND LIABILITIES MARCH 31, 2006 (UNAUDITED) DECEMBER 31, 2005 ------------------- ------------------- ASSETS: Cash and cash equivalents (amortized cost of $255,960,590 and $288,984,387) $ 255,960,590 $ 288,972,347 Investments, at value (amortized cost of $290,560,367 and $250,184,074) 291,646,836 250,436,350 Receivable for investments sold - 996,250 Interest receivable 2,349,695 1,656,131 Dividends receivable 30,658 - Other assets 53,063 165,363 ------------------- ------------------ Total Assets $ 550,040,842 $ 542,226,441 =================== ================== LIABILITIES: Payable for investments purchased 5,190,795 4,198,296 Dividend distribution payable - 7,073,318 Legal fees (offering costs) payable 584,453 587,080 Management fees payable 460,752 455,329 Accrued administrative services expenses 782,175 508,950 Other accrued expenses and payables 602,340 698,619 ------------------- ------------------ Total Liabilities 7,620,515 13,521,592 ------------------- ------------------ NET ASSETS: Common stock, par value $.001 per share, 40,000,000 common shares authorized, 36,285,072 and 35,366,589 issued and outstanding, respectively 36,285 35,367 Paid-in capital in excess of par 543,059,433 529,298,432 Distributions in excess of net investment income (1,357,835) (870,327) Accumulated net realized (loss) gain (404,025) 1,141 Net unrealized appreciation 1,086,469 240,236 ------------------ ------------------ Total Net Assets 542,420,327 528,704,849 ------------------ ------------------ Total Liabilities and Net Assets $ 550,040,842 $ 542,226,441 ================== ================== Net Asset Value Per Share $ 14.95 $ 14.95 ================== ================== The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION STATEMENT OF OPERATIONS (UNAUDITED) FOR THE THREE MONTHS ENDED MARCH 31, 2006 INVESTMENT INCOME: Interest income $ 8,479,492 Dividend income 151,918 Other income 102,000 ---------------- Total investment income 8,733,410 ---------------- EXPENSES: Management fees 2,664,878 Administrative services 246,575 Professional fees 213,917 Investment Advisor expenses 77,957 Director fees 70,188 Insurance 36,539 Other 75,806 ---------------- Expenses before management fee waiver 3,385,860 Management fee waiver (1,332,439) ---------------- Net Expenses 2,053,421 ---------------- NET INVESTMENT INCOME 6,679,989 ---------------- REALIZED AND UNREALIZED GAIN (LOSS): Net realized loss on investments (405,166) ---------------- Net change in unrealized appreciation (depreciation): Investments 834,193 Cash equivalents 12,040 ---------------- Net change in unrealized appreciation 846,233 ---------------- Net realized and unrealized gain 441,067 ---------------- NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS $ 7,121,056 ================ Earnings Per Share $ 0.20 ================ Basic and Diluted Weighted-Average Shares Outstanding 35,685,496 The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION STATEMENT OF CHANGES IN NET ASSETS (UNAUDITED) FOR THE THREE MONTHS ENDED MARCH 31, 2006 NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS: Net investment income $ 6,679,989 Net change in unrealized appreciation 846,233 Net realized loss on investments (405,166) ------------------- Net increase in net assets resulting from operations 7,121,056 ------------------- DIVIDENDS TO SHAREHOLDERS FROM NET INVESTMENT INCOME (7,167,498) ------------------- CAPITAL SHARE TRANSACTIONS: Reinvestment of dividends 13,761,920 ------------------- TOTAL INCREASE IN NET ASSETS 13,715,478 Net assets at beginning of period 528,704,849 ------------------- Net assets at end of period $ 542,420,327 =================== CAPITAL SHARE ACTIVITY: Shares issued from reinvestment of dividends 918,484 =================== ACCUMULATED DISTRIBUTIONS: Accumulated distributions in excess of net investment income $ (1,357,835) =================== The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION STATEMENT OF CASH FLOWS (UNAUDITED) FOR THE THREE MONTHS ENDED MARCH 31, 2006 OPERATING ACTIVITIES: Net increase in net assets resulting from operations $ 7,121,056 Adjustments to reconcile net increase in net assets resulting from operations to net cash used in operating activities: Proceeds from dispositions of short-term investments - net 25,990,928 Purchases of long-term investments (72,653,669) Proceeds from dispositions of long-term investments 6,256,303 Net change in unrealized appreciation on investments (834,193) Net realized loss on investments 405,166 Amortization of premium/discount - net (377,301) Decrease in receivable for investments sold 996,250 Increase in interest receivable (693,564) Increase in dividends receivable (30,658) Decrease in other assets 112,300 Increase in payable for investments purchased 992,499 Decrease in legal fees (offering costs) payable (2,627) Increase in management fees payable 5,423 Increase in accrued administrative services expenses 273,225 Decrease in other accrued expenses and payables (96,279) -------------------- Net cash used in operating activities (32,535,141) -------------------- FINANCING ACTIVITIES: Dividends paid (476,616) -------------------- Net decrease in cash and cash equivalents (33,011,757) Cash and cash equivalents, beginning of period 288,972,347 -------------------- Cash and cash equivalents, end of period $ 255,960,590 ==================== Supplemental disclosure of non-cash financing activities: Dividend distributions reinvested $ 13,761,920 ==================== The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS (UNAUDITED) MARCH 31, 2006 Principal Amount or Number of Fair Portfolio Company (a) Industry Shares/Units Cost (b) Value - ----------------- -------- ------------ ---- ----- SHORT-TERM INVESTMENTS - 14.9% - ------------------------------ Asset-Backed Security - 2.8% RACERS Trust, Series 2005-17-O, 4.79% (LIBOR + 0.02%/Q), 8/21/06, acquired 8/29/05 (c) Asset-Backed Security $ 15,000,000 $ 15,000,000 $ 15,003,600 --------------------------------------------- Certificates of Deposit - 2.8% DEFPA BANK plc, New York, 4.53%, 10/16/06 Banking 15,000,000 15,000,000 14,939,414 --------------------------------------------- Commercial Paper - 8.4% Securities Broker Morgan Stanley & Co. Incorporated, 4.96%, 8/4/06 and Dealer 26,000,000 26,000,000 26,000,780 Natexis Banques Populaires US Finance Co. LLC, 4.56%, 7/31/06 Banking 20,000,000 19,693,803 19,664,500 --------------------------------------------- Total Commercial Paper 46,000,000 45,693,803 45,665,280 --------------------------------------------- Master Notes - 0.9% Citigroup Global Markets Inc., 4.57%, 8/25/06 Financial Services 5,000,000 5,000,000 5,000,000 --------------------------------------------- TOTAL SHORT-TERM INVESTMENTS $ 81,000,000 80,693,803 80,608,294 =================---------------------------- LONG-TERM INVESTMENTS - 39.1% - ----------------------------- Subordinated Debt / Corporate Notes - 0.7% First Mercury Holdings, Inc., 12.75% (LIBOR + 8.00%/Q), 8/15/12, acquired 8/12/05 (c) Insurance $ 1,800,000 1,783,599 1,831,500 Select Medical Corporation, 7.63%, 2/1/15 Specialty Hospitals 1,950,000 1,744,012 1,759,875 --------------------------------------------- Total Subordinated Debt / Corporate Notes $ 3,750,000 3,527,611 3,591,375 =================---------------------------- Senior Secured Loans (d) - 37.0% Applied Tech Products Corp. et al., Tranche A, First Lien, 9.03% (LIBOR + 4.50%), 10/24/10 Plastic Packaging $ 4,251,515 4,221,331 4,221,331 (e) Applied Tech Products Corp. et al., Tranche B, Second Lien, 13.53% (LIBOR + 9.00%), 4/24/11 Plastic Packaging 1,951,515 1,932,944 1,932,944 (e) Applied Tech Products Corp. et al., Tranche C, Third Lien, 17.03% (LIBOR + 6.30% cash, 6.20% PIK), 10/24/11 Plastic Packaging 704,319 609,863 609,863 (e) Benchmark Medical Holdings Inc., First Lien, 7.98% (LIBOR + 3.00%), 12/27/12 Rehabilitation Centers 1,995,000 1,995,000 2,004,975 The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS (UNAUDITED) (continued) MARCH 31, 2006 Principal Amount or Number of Fair Portfolio Company (a) Industry Shares/Units Cost (b) Value - ----------------- -------- ------------ ---- ----- Benchmark Medical Holdings, Inc., Second Lien, 12.06% (LIBOR + 7.00%), 6/27/13 Rehabilitation Centers $ 9,000,000 $ 9,000,000 $ 9,000,000 Bushnell Performance Optics, First Lien, 7.53% (LIBOR + 3.00%), 8/19/11 Leisure Products 997,561 997,561 1,007,537 Cannondale Bicycle Corporation, Second Lien, 11.98% (LIBOR + 7.00%), 6/5/10 Bicycles/Apparel 10,000,000 10,000,000 10,000,000 (e) Champion Energy Corporation et al., First Lien, 13.77% (LIBOR + 9.00%), 6/30/09 Heating and Oil Services 18,000,000 18,000,000 18,000,000 (e) Clean Earth Inc., Tranche B, First Lien, 7.81% (LIBOR + 3.00%), 10/17/11 Environmental Services 1,481,250 1,481,250 1,496,063 Data Transmission Network Corporation, Second Lien, 12.70% (LIBOR + 8.00%), 9/10/13 Information Services 4,000,000 4,000,000 4,000,000 Delta Air Lines, Inc., Term Loan B, First Lien, 9.26% (LIBOR + 4.75%), 3/16/08 Airlines 1,000,000 1,000,000 1,027,500 Deluxe Entertainment Services Group Inc., Second Lien, 13.23% (LIBOR + 8.25%), 7/28/11 Entertainment 20,000,000 20,000,000 20,100,000 Eight O'Clock Coffee Company, First Lien, 7.69% (LIBOR + 3.00%), 11/14/11 Coffee Distributor 2,962,500 2,962,500 2,992,125 Eight O'Clock Coffee Company, Second Lien, 11.69% (LIBOR + 7.00%), 11/14/12 Coffee Distributor 12,000,000 12,000,000 12,120,000 Event Rentals, Inc., First Lien, 9.95% (LIBOR + 5.25%), 11/17/11 Party Rentals 14,454,545 14,454,545 14,454,545 (e) Event Rentals, Inc., Acquisition Loan (Funded), First Lien, 9.92% (LIBOR + 5.25%), 11/17/11 Party Rentals 9,845,876 9,845,876 9,845,876 (e) Event Rentals, Inc., Acquisition Loan (Unfunded), First Lien, 0.50%, 11/18/07 Party Rentals 2,198,295 2,198,295 2,198,295 (e) Haggar Clothing Co., Second Lien, 11.51% (LIBOR + 7.00%), 11/1/11 Apparel 2,500,000 2,476,723 2,500,000 Heartland Automotive Services II Inc. et al., Term Loan A, First Lien, 8.58% (LIBOR + 3.75%), 2/27/12 Automobile Repair 7,000,000 6,992,682 7,035,000 Heartland Automotive Services II Inc. et al., Acquisition Loan (Unfunded), First Lien, 0.75%, 2/27/08 Automobile Repair 3,000,000 2,992,500 3,015,000 The Hertz Corporation, Tranche B, First Lien, 6.98% Automobile and Equipment (LIBOR + 2.25%), 12/21/12 Rental 1,995,000 1,995,000 2,014,950 HIT Entertainment, Inc., Second Lien, 10.24% (LIBOR + 5.50%), 2/26/13 Entertainment 1,000,000 1,000,000 1,010,000 The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS (UNAUDITED) (continued) MARCH 31, 2006 Principal Amount or Number of Fair Portfolio Company (a) Industry Shares/Units Cost (b) Value - ----------------- -------- ------------ ---- ----- Houghton International Inc., First Lien, 7.96% (LIBOR + 3.00%), 12/15/11 Specialty Chemicals $ 4,931,944 $ 4,931,944 $ 4,987,429 MacAndrews Deluxe Holdings LLC, First Lien, 13.00%, 7/28/11 Entertainment 10,000,000 10,000,000 10,000,000 MD Beauty, Inc., Second Lien, 11.67% (LIBOR + 7.00%), 2/18/13 Cosmetics 3,000,000 3,000,000 3,030,000 NTELOS Inc., Second Lien, 9.83% (LIBOR + 5.00%), 2/24/12 Telecommunications 2,000,000 1,984,893 2,012,500 PBI Media, Inc., Second Lien, 10.67% (LIBOR + 6.00%), 9/30/13 Information Services 6,000,000 5,990,349 5,910,000 Precision Parts International Services Corp. et al., First Lien, 8.31% (LIBOR + 3.75%), 9/30/11 Automotive Parts 2,992,500 2,992,500 2,999,981 QTC Acquisition Inc., Second Lien, 11.33% (LIBOR + 6.50%), 5/10/13 Disability Evaluations 10,000,000 10,000,000 10,100,000 United Subcontractors, Inc., Second Lien, 11.95% (LIBOR + 7.25%), 6/27/13 Building and Construction 10,000,000 10,000,000 10,000,000 US Investigations Services, Inc., Tranche B, First Lien, 7.43% (LIBOR + 2.50%), 10/14/12 Investigative Services 1,973,197 1,973,197 1,995,395 US Investigations Services, Inc., Tranche C, First Lien, 7.43% (LIBOR + 2.50%), 10/14/12 Investigative Services 741,803 741,803 745,513 U.S. Security Holdings, Inc., Tranche B, First Lien, 8.32% (LIBOR + 3.25%), 2/29/12 Security Services 966,700 966,700 971,534 Wastequip, Inc., Second Lien, 10.98% (LIBOR + 6.00%), 7/15/12 Waste Treatment 500,000 500,000 506,250 Wembley, Inc., Second Lien, 8.74% (LIBOR + 3.75%), 8/23/12 Gaming 1,000,000 1,000,000 1,015,000 Westward Dough Operating Company, LLC, Term Loan A, First Lien, 8.96% (LIBOR + 4.00%), 3/30/11 Restaurants 8,000,000 8,000,000 8,000,000 (e) Westward Dough Operating Company, LLC, Term Loan B, First Lien, 11.96% (LIBOR + 7.00%), 3/30/11 Restaurants 8,000,000 8,000,000 8,000,000 (e) ------------------------------------------------- Total Senior Secured Loans $ 200,443,520 200,237,456 200,859,606 ==================------------------------------- Closed-End Funds - 1.4% Eaton Vance Floating-Rate Income Trust Closed-End Fund 175,000 2,988,408 3,164,000 Nuveen Floating Rate Income Fund Closed-End Fund 94,400 1,159,186 1,231,584 PIMCO Floating Rate Strategy Fund Closed-End Fund 170,000 2,997,026 3,235,100 --------------------------------- Total Closed-End Funds 7,144,620 7,630,684 --------------------------------- The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS (UNAUDITED) (continued) MARCH 31, 2006 Principal Amount or Number of Fair Portfolio Company (a) Industry Shares/Units Cost (b) Value - ----------------- -------- ------------ ---- ----- Equity Warrants - 0.0% ATEP Holdings, Inc., expire 10/24/15 Plastic Packaging 470 $ - $ - (e) ATH Holdings, Inc., expire 10/24/15 Plastic Packaging 470 - - (e) ATPP Holdings, Inc., expire 10/24/15 Plastic Packaging 470 90,114 90,114 (e) ATPR Holdings, Inc., expire 10/24/15 Plastic Packaging 470 - - (e) ---------------------------------- Total Equity Warrants 90,114 90,114 ---------------------------------- TOTAL LONG-TERM INVESTMENTS 210,999,801 212,171,779 INCLUDING UNEARNED INCOME UNEARNED INCOME - (0.2)% (1,133,237) (1,133,237) ---------------------------------- TOTAL LONG-TERM INVESTMENTS 209,866,564 211,038,542 ---------------------------------- TOTAL INVESTMENTS - 53.8% $ 290,560,367 291,646,836 =================----------------- OTHER ASSETS & LIABILITIES (NET) - 46.2% 250,773,491 ----------------- NET ASSETS - 100.0% $ 542,420,327 ================= - --------------- (a) None of our portfolio companies are "controlled" or "affiliated" as defined by the Investment Company Act of 1940. (b) Represents amortized cost for fixed income securities and unearned income, and cost for closed-end funds and equity warrants. (c) These securities are exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions that are exempt from registration, normally to qualified institutional buyers. In the aggregate, these securities represent 3.1% of net assets at March 31, 2006. (d) Approximately 95% of the senior secured loans to our portfolio companies bear interest at a floating rate that may be determined by reference to the London Interbank Offered Rate (LIBOR) or other base rate (commonly the Federal Funds Rate or the Prime Rate), at the borrower's option. Additionally, the borrower under a senior secured loan generally has the option to select from interest rate reset periods of one, two, three or six months and may alter that selection at the end of any reset period. Current reset frequencies for floating rate instruments other than senior secured loans are indicated by Q (quarterly) or S (semiannually). (e) Fair value of this investment determined by or under the direction of our Board of Directors (see Note 2). The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS DECEMBER 31, 2005 Principal Amount or Number of Fair Portfolio Company (a) Industry (b) Shares/Units Cost (c) Value - ----------------- -------- ------------ ---- ----- SHORT-TERM INVESTMENTS - 20.1% - ------------------------------ Asset-Backed Security - 2.8% RACERS Trust, Series 2005-17-O, 4.39% (LIBOR + 0.02%/Q), 8/21/06, acquired 8/29/05 (d) Asset-Backed Security $ 15,000,000 $ 15,000,000 $ 15,006,300 ----------------------------------------------- Certificates of Deposit - 5.7% DEFPA BANK plc, New York, 4.53%, 10/16/06 Banking 15,000,000 15,000,000 14,961,713 Washington Mutual Bank N.A., 4.46%, 3/28/06 Banking 15,000,000 15,000,000 14,999,820 ----------------------------------------------- Total Certificates of Deposit 30,000,000 30,000,000 29,961,533 ----------------------------------------------- Commercial Paper - 11.6% Barclays US Funding Corp., 4.24%, 2/3/06 Banking 26,000,000 25,900,019 25,900,019 BNP Paribas (Canada), 3.83%, 1/24/06 Banking 1,500,000 1,496,397 1,496,397 Credit Suisse First Boston USA, Inc., 3.83%, Securities Broker and 1/27/06 Dealer 8,000,000 7,978,626 7,978,626 Securities Broker and Morgan Stanley & Co. Incorporated, 4.08%, 8/4/06 Dealer 26,000,000 26,000,000 26,003,120 ----------------------------------------------- Total Commercial Paper 61,500,000 61,375,042 61,378,162 ----------------------------------------------- TOTAL SHORT-TERM INVESTMENTS $ 106,500,000 106,375,042 106,345,995 ================------------------------------- LONG-TERM INVESTMENTS - 27.3% - ----------------------------- Subordinated Debt / Corporate Notes - 1.3% First Mercury Holdings, Inc., 12.33% (LIBOR + 8.00%/Q), 8/15/12, acquired 8/12/05(d) Insurance $ 1,800,000 1,782,965 1,831,500 InSight Health Services Corp., 9.17% (LIBOR + 5.25%/Q), 11/1/11, acquired 9/16/05(d) Diagnostic Imaging 2,500,000 2,488,066 2,375,000 Select Medical Holdings Corporation, 9.93% (LIBOR + 5.75%/S), 9/15/15, acquired 9/15/05(d) Specialty Hospitals 2,500,000 2,500,000 2,512,500 ----------------------------------------------- Total Subordinated Debt / Corporate Notes $ 6,800,000 6,771,031 6,719,000 ================------------------------------- Senior Secured Loans (e) - 24.8% Applied Tech Products Corp. et al., Tranche A, First Lien, 8.91% (LIBOR + 4.50%), 10/24/10 Plastic Packaging $ 4,251,515 4,219,701 4,219,629 (f) Applied Tech Products Corp. et al., Tranche B, Second Lien, 13.41% (LIBOR + 9.00%), 4/24/11 Plastic Packaging 1,951,515 1,932,040 1,932,000 (f) Applied Tech Products Corp. et al., Tranche C, Third Lien, 16.91% (LIBOR + 6.30% cash, 6.20% PIK), 10/24/11 Plastic Packaging 696,970 598,331 598,145 (f) Benchmark Medical Holdings Inc., First Lien, 9.00% (Base Rate + 1.75%), 12/27/12 Rehabilitation Centers 2,000,000 2,000,000 2,015,000 Benchmark Medical Holdings Inc., Second Lien, 13.00% (Base Rate + 5.75%), 6/27/13 Rehabilitation Centers 9,000,000 9,000,000 9,000,000 Bushnell Performance Optics, First Lien, 7.53% (LIBOR + 3.00%), 8/19/11 Leisure Products 1,000,000 1,000,000 1,012,469 The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS (continued) DECEMBER 31, 2005 Principal Amount or Number of Fair Portfolio Company (a) Industry (b) Shares/Units Cost (c) Value - ----------------- -------- ------------ ---- ----- Cannondale Bicycle Corporation, Second Lien, 11.53% (LIBOR + 7.00%), 6/5/10 Bicycles/Apparel $ 10,000,000 $ 10,000,000 $ 10,000,000 (f) Champion Energy Corporation et al., First Lien, 13.38% Heating and Oil (LIBOR + 9.00%), 6/30/09 Services 18,000,000 18,000,000 18,000,000 (f) Clean Earth Inc., Tranche B, First Lien, 7.39% Environmental Services 1,500,000 1,500,000 1,515,000 (LIBOR + 3.00%), 10/17/11 Delta Air Lines, Inc., Term Loan B, First Lien, 11.01% (LIBOR + 6.50%), 3/16/08 Airlines 1,000,000 1,000,000 1,036,750 Eight O'Clock Coffee Company, First Lien, 7.44% Coffee Distributor 3,000,000 3,000,000 3,022,500 (LIBOR + 3.00%), 11/14/11 Eight O'Clock Coffee Company, Second Lien, 11.44% Coffee Distributor 12,000,000 12,000,000 12,000,000 (LIBOR + 7.00%), 11/14/12 Event Rentals, Inc., First Lien, 9.94% Party Rentals 14,454,545 14,454,545 14,454,545 (f) (LIBOR + 5.25%), 11/17/11 Event Rentals, Inc., Acquisition Loan (Funded), Party Rentals 9,847,159 9,847,159 9,847,159 (f) First Lien, 9.92% (LIBOR + 5.25%), 11/17/11 Event Rentals, Inc., Acquisition Loan (Unfunded), Party Rentals 2,198,295 2,198,295 2,198,295 (f) First Lien, 0.50%, 11/18/07 Haggar Clothing Co., Second Lien, 11.51% Apparel 2,500,000 2,500,000 2,500,000 (LIBOR + 7.00%), 11/1/11 The Hertz Corporation, Tranche B, First Lien, 8.50% Automobile and (Base Rate + 1.25%), 12/21/12 Equipment Rental 2,000,000 2,000,000 2,022,500 HIT Entertainment, Inc., Second Lien, 9.71% Entertainment 1,000,000 1,000,000 990,000 (LIBOR + 5.50%), 2/26/13 Houghton International Inc., First Lien, 9.25% Specialty Chemicals 5,000,000 5,000,000 5,043,750 (Base Rate + 2.00%), 12/15/11 MD Beauty, Inc., Second Lien, 11.25% Cosmetics 3,000,000 3,000,000 3,022,500 (LIBOR + 7.00%), 2/18/13 Metaldyne Corporation et al., First Lien, 8.58% Automotive Parts 998,741 988,476 1,001,237 (LIBOR + 4.50%), 12/31/09 NTELOS Inc., Second Lien, 9.39% Telecommunications 2,000,000 1,984,276 2,020,000 (LIBOR + 5.00%), 2/24/12 PBI Media, Inc., Second Lien, 10.24% Information Services 6,000,000 5,990,032 5,940,000 (LIBOR + 6.00%), 9/30/13 Precision Parts International Services Corp. et al., Automotive Parts 3,000,000 3,000,000 3,022,501 First Lien, 7.98% (LIBOR + 3.75%), 9/30/11 QTC Acquisition Inc., Second Lien, 10.84% Disability Evaluations 10,000,000 10,000,000 10,075,000 (LIBOR + 6.50%), 5/10/13 US Investigations Services, Inc., Tranche B, First Lien, 7.00% (LIBOR + 2.50%), 10/14/12 Investigative Services 1,995,000 1,995,000 1,999,988 U.S. Security Holdings, Inc., First Lien, 7.27% Security Services 983,400 983,400 990,776 (LIBOR + 3.25%), 2/29/12 Wastequip, Inc., Second Lien, 10.53% Waste Treatment 500,000 500,000 506,250 (LIBOR + 6.00%), 7/15/12 Wembley, Inc., Second Lien, 7.83% (LIBOR + 3.75%), 8/23/12 Gaming 1,000,000 1,000,000 1,006,250 ------------------------------------------------ Total Senior Secured Loans $ 130,877,140 130,691,255 130,992,244 ===============+-------------------------------- The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION SCHEDULES OF INVESTMENTS (continued) DECEMBER 31, 2005 Principal Amount or Number of Fair Portfolio Company (a) Industry (b) Shares/Units Cost (c) Value - ----------------- -------- ------------ ---- ----- Closed-End Funds - 1.4% Eaton Vance Floating-Rate Income Trust Closed-End Fund 175,000 $ 2,988,408 $ 2,952,250 Nuveen Floating Rate Income Fund Closed-End Fund 94,400 1,159,147 1,188,496 PIMCO Floating Rate Strategy Fund Closed-End Fund 170,000 2,997,026 3,036,200 -------------------------------- Total Closed-End Funds 7,144,581 7,176,946 -------------------------------- Equity Warrants - 0.0% ATEP Holdings, Inc., expire 10/24/15 Plastic Packaging 470 - - (f) ATH Holdings, Inc., expire 10/24/15 Plastic Packaging 470 - - (f) ATPP Holdings, Inc., expire 10/24/15 Plastic Packaging 470 90,114 90,114 (f) ATPR Holdings, Inc., expire 10/24/15 Plastic Packaging 470 - - (f) -------------------------------- Total Equity Warrants 90,114 90,114 -------------------------------- TOTAL LONG-TERM INVESTMENTS INCLUDING UNEARNED INCOME 144,696,981 144,978,304 UNEARNED INCOME - (0.2)% (887,949) (887,949) -------------------------------- TOTAL LONG-TERM INVESTMENTS 143,809,032 144,090,355 -------------------------------- TOTAL INVESTMENTS - 47.4% $ 250,184,074 250,436,350 ===============----------------- OTHER ASSETS & LIABILITIES (NET) - 52.6% 278,268,499 ---------------- NET ASSETS - 100.0% $ 528,704,849 ================ - -------------- (a) None of our portfolio companies are "controlled" or "affiliated" as defined by the Investment Company Act of 1940. (b) Unaudited. (c) Represents amortized cost for fixed income securities and unearned income, and cost for closed-end funds and equity warrants. (d) These securities are exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions that are exempt from registration, normally to qualified institutional buyers. In the aggregate, these securities represent 4.1% of net assets at December 31, 2005. (e) All of the senior secured loans to our portfolio companies bear interest at a floating rate that may be determined by reference to the London Interbank Offered Rate (LIBOR) or other base rate (commonly the Federal Funds Rate or the Prime Rate), at the borrower's option. Additionally, the borrower under a senior secured loan generally has the option to select from interest rate reset periods of one, two, three or six months and may alter that selection at the end of any reset period. Current reset frequencies for floating rate instruments other than senior secured loans are indicated by Q (quarterly) or S (semiannually). (f) Fair value of this investment determined by or under the direction of our Board of Directors (see Note 2). The accompanying notes are an integral part of these financial statements.

BLACKROCK KELSO CAPITAL CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) 1. Organization BlackRock Kelso Capital Corporation (the "Company") was organized as a Delaware corporation on April 13, 2005 and was initially funded on July 25, 2005. The Company has filed an election to be treated as a business development company ("BDC") under the Investment Company Act of 1940 (the "1940 Act"). In addition, for tax purposes the Company intends to elect to be treated as a regulated investment company, or RIC, under the Internal Revenue Code of 1986 (the "Code"). The Company's investment objective is to generate both current income and capital appreciation through debt and equity investments. The Company intends to invest primarily in middle-market companies in the form of senior and junior secured and unsecured debt securities and loans, each of which may include an equity component, and by making direct preferred, common and other equity investments in such companies. On July 25, 2005, the Company completed a private placement (the "Offering") of 35,366,589 shares of its common stock, par value $.001 per share (the "Common Stock"), at a price of $15.00 per share. Net proceeds from the Offering of $529,333,799 reflect the payment of a placement fee of $507,407 and legal fees and other offering costs of $657,639. The accompanying interim financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). In the opinion of management, all adjustments, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim period, have been included. 2. Significant Accounting Policies The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reported period. Changes in the economic environment, financial markets and any other parameters used in determining these estimates could cause actual results to differ and such differences could be material. The significant accounting policies consistently followed by the Company are: (a) Investments for which market quotations are readily available are valued at such market quotations, which are generally obtained from an independent pricing service or one or more broker-dealers or market makers. However, debt investments with remaining maturities within 60 days are valued at cost plus accreted discount, or minus amortized premium, which approximates fair value. Debt and equity securities for which market quotations are not readily available are valued at fair value as determined in good faith by or under the direction of the Company's Board of Directors. Because the Company expects that there will not be a readily available market value for many of the investments in its portfolio, the Company expects to value many of its portfolio investments at fair value as determined in good faith by or under the direction of the Board of Directors using a consistently applied valuation process in accordance with a documented valuation policy that has been reviewed and approved by the Board of Directors. Due to the inherent uncertainty of determining the fair value of investments that do not have a readily available market value, the fair value of the Company's investments may differ significantly from the values that would have been used had a readily available market value existed for such investments, and the differences could be material. With respect to the Company's investments for which market quotations are not readily available, the Board of Directors undertakes a multi-step valuation process each quarter, as described below: (1) The quarterly valuation process begins with each portfolio company or investment being initially valued by the investment professionals of BlackRock Kelso Capital Advisors LLC, the Company's investment adviser (the "Investment Advisor"), responsible for the portfolio investment; (2) Preliminary valuation conclusions are then documented and discussed with senior management;

BLACKROCK KELSO CAPITAL CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (Continued) (3) To the extent determined by the Audit Committee of the Board of Directors, independent valuation firms engaged by the Board of Directors conduct independent appraisals and review management's preliminary valuations and their own independent assessment; (4) The Audit Committee of the Board of Directors reviews the preliminary valuations of the investment professionals, senior management and independent valuation firms; and (5) The Board of Directors discusses valuations and determines the fair value of each investment in the portfolio in good faith based on the input of the Investment Advisor, the respective independent valuation firms and the Audit Committee. The types of factors that the Company may take into account in fair value pricing its investments include, as relevant, the nature and realizable value of any collateral, the portfolio company's ability to make payments and its earnings and discounted cash flow, the markets in which the portfolio company does business, comparison to publicly traded securities and other relevant factors. Determination of fair values involves subjective judgments and estimates. Accordingly, these notes to the financial statements express the uncertainty with respect to the possible effect of such valuations, and any change in such valuations, on the financial statements. The carrying value of the Company's financial instruments approximate fair value. The carrying value of receivables, other assets, accounts payable and accrued expenses approximate fair value due to their short maturity. None of the Company's portfolio companies are controlled by or affiliated with the Company as defined in the 1940 Act. (b) Cash equivalents include short-term investments in money market instruments with remaining maturities when purchased of three months or less. (c) Security transactions are accounted for on the trade date unless there are substantial conditions to the purchase. (d) Gains or losses on the sale of investments are calculated using the specific identification method. (e) Interest income, adjusted for amortization of premium and accretion of discount, is recorded on an accrual basis. Interest income is not accrued if collection is deemed doubtful or the related investment is in default. For loans and debt securities with contractual payment-in-kind ("PIK") interest, which represents contractual interest accrued and added to the loan balance that generally becomes due at maturity, PIK interest is not accrued if the portfolio company valuation indicates that the PIK interest is not collectible. Origination, structuring, closing, commitment and other upfront fees and discounts and premiums on investments purchased are accreted/amortized over the life of the respective investment. Unamortized origination, structuring, closing, commitment and other upfront fees are recorded as unearned income. Upon the prepayment of a loan or debt security, any prepayment penalties and unamortized loan origination, structuring, closing, commitment and other upfront fees are recorded as interest income. Dividend income is recorded on the ex-dividend date. Expenses are recorded on an accrual basis. (f) Organizational costs of the Company were expensed as incurred. Offering costs were charged against paid-in capital. (g) The Company intends to qualify for the tax treatment applicable to regulated investment companies under Subchapter M of the Code, and, among other things, intends to make the requisite distributions to its shareholders which will relieve the Company from federal income and excise taxes. Therefore, no provision has been recorded for federal income or excise taxes. In order to qualify as a RIC, the Company is required to distribute annually to its shareholders at least 90% of investment company taxable

BLACKROCK KELSO CAPITAL CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (Continued) income, as defined by the Code. To avoid federal excise taxes, the Company must distribute annually at least 98% of its income (both ordinary income and net capital gains). In accordance with GAAP, book and tax basis differences relating to distributions to shareholders and other permanent book and tax differences are reclassified to capital in excess of par. In addition, the character of income and gains to be distributed is determined in accordance with income tax regulations that may differ from GAAP. (h) Dividends and distributions to common shareholders are recorded on the ex-date. The amount to be paid out as a dividend is determined by the Board of Directors. On December 22, 2005, the Company declared a dividend of $0.20 per share, payable on January 31, 2006 to shareholders of record at the close of business on December 31, 2005. The ex-date of this dividend was December 29, 2005. On March 8, 2006, the Company declared a dividend of $0.20 per share, payable on March 31, 2006 to shareholders of record at the close of business on March 15, 2006. The ex-date of this dividend was March 29, 2006. On May 9, 2006, the Company declared a dividend of $0.23 per share, payable on June 30, 2006 to shareholders of record at the close of business on June 15, 2006. The ex-date of this dividend will be June 28, 2006. The Company has adopted a dividend reinvestment plan that provides for reinvestment of distributions on behalf of shareholders, unless a shareholder elects to receive cash. As a result, if the Board of Directors authorizes, and the Company declares, a cash dividend, then shareholders who have not "opted out" of the dividend reinvestment plan will have their cash dividends automatically reinvested in additional shares of Common Stock, rather than receiving the cash dividends. 3. Agreements and Related Party Transaction The Company has entered into an Investment Management Agreement (the "Management Agreement") with the Investment Advisor, under which the Investment Advisor, subject to the overall supervision of the Company's Board of Directors, manages the day-to-day operations of, and provides investment advisory services to, the Company. For providing these services, the Investment Advisor receives a fee (the "Management Fee") from the Company at an annual rate of 2.0% of the Company's total assets, including any assets acquired with the proceeds of leverage. For services rendered under the Management Agreement during the period commencing from July 25, 2005, the closing of the Offering (the "Closing"), through and including the first twelve months of operations, the Management Fee will be payable monthly in arrears. For services rendered under the Management Agreement after that time, the Management Fee will be paid quarterly in arrears. The Investment Advisor has contractually agreed to waive its rights to receive one-half of the amount of the Management Fee the Investment Advisor would otherwise be entitled to receive from the Company until the first date on which 90% of the assets of the Company are invested in portfolio companies in accordance with the Company's investment objective, excluding investments in cash, cash equivalents, U.S. government securities and other high-quality debt investments that mature in one year or less from the date of investment, or the first anniversary of the Closing, whichever is sooner (the "Ramp-Up Date"). Thereafter, the Investment Advisor has agreed to waive, until such time as the Company has completed an initial public offering of its Common Stock and listed its Common Stock on a national securities exchange (collectively, the "Public Market Event"), one-quarter of the amount of the Management Fee the Investment Advisor would otherwise be entitled to receive from the Company. In addition, the Investment Advisor has agreed to (a) waive Management Fees for any calendar year in excess of approximately $11.9 million until the earlier of (i) such time as the Company has completed the Public Market Event or (ii) the fourth anniversary of the Company's inception of operations and (b) waive Management Fees in excess of approximately $5.6 million during the fifth year of the Company's operations unless the Company has completed the Public Market Event. For the three months ended March 31, 2006, the Investment Advisor earned $1,332,439 in fees, net of the waiver provision, from the Company. The Management Agreement provides that the Investment Advisor or its affiliates may be entitled to an incentive fee (the "Carried Interest") under certain circumstances. The determination of the Carried Interest, as described in more detail below, will result in the Investment Advisor or its affiliates receiving no Carried Interest payments if returns to Company shareholders, as described in more detail below, do not meet an 8.0% annualized rate of return and will

BLACKROCK KELSO CAPITAL CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (Continued) result in the Investment Advisor or its affiliates receiving less than the full amount of the Carried Interest percentage until returns to shareholders exceed an approximate 13.3% annualized rate of return. Commencing on the Ramp-Up Date, the Company will pay to the Investment Advisor or its affiliates at the same time as, and not in advance of, any distributions in respect of the Company's Common Stock, (i) 50% of the amount by which the cumulative distributions and amounts distributable to the holders of the Common Stock of the Company exceed an 8% annualized rate of return on net asset value until the Investment Advisor or its affiliates have received from the Company an amount equal to 20% of the sum of the cumulative amounts distributed pursuant to this paragraph and the cumulative amounts of net income (including realized capital gains in excess of realized capital losses) in excess of net unrealized capital depreciation distributed to the holders of the Company's Common Stock, and (ii) thereafter an amount equal to 20% of the sum of the amount distributed pursuant to this paragraph and the cumulative amounts of net income (including realized capital gains in excess of realized capital losses) in excess of net unrealized capital depreciation distributed to the holders of the Company's Common Stock. After the Public Market Event, if any, the amounts above will be measured and paid quarterly on a rolling four-quarter basis and will take into account any decrease in net unrealized depreciation during the measurement period to the extent such decrease did not exceed the net amount of capital depreciation at the beginning of such period and does not exceed the excess of cumulative realized capital gains over cumulative realized capital losses. For the three months ended March 31, 2006, no Carried Interest amounts were earned by the Investment Advisor. The Management Agreement provides that the Company will reimburse the Investment Advisor for costs and expenses incurred by the Investment Advisor for office space rental, office equipment and utilities allocable to the performance by the Investment Advisor of its duties under the Management Agreement, as well as any costs and expenses incurred by the Investment Advisor relating to any non-investment advisory, administrative or operating services provided by the Investment Advisor to the Company. For the three months ended March 31, 2006, the Company accrued $77,957 for costs and expenses reimbursable to the Investment Advisor under the Management Agreement. No person who is an officer, director or employee of the Investment Advisor and who serves as a director of the Company receives any compensation from the Company for such services. Directors who are not affiliated with the Investment Advisor receive compensation for their services and reimbursement of expenses incurred to attend meetings. The Company has also entered into an Administration Agreement with BlackRock Financial Management, Inc. (the "Administrator"), a majority-owned subsidiary of The PNC Financial Services Group, Inc. ("PNC"), under which the Administrator provides administrative services to the Company. For providing these services, facilities and personnel, the Company reimburses the Administrator for the Company's allocable portion of overhead and other expenses incurred by the Administrator in performing its obligations under the Administration Agreement, including rent and the Company's allocable portion of the cost of certain of the Company's officers and their respective staffs. For the three months ended March 31, 2006, the Company accrued $246,575 for administrative services expenses payable to the Administrator under the Administration Agreement. From time to time, the Investment Advisor or the Administrator may pay amounts owed by the Company to third party providers of goods or services. The Company will subsequently reimburse the Investment Advisor or the Administrator, as the case may be, for such amounts paid on its behalf. For the three months ended March 31, 2006, the Company reimbursed the Investment Advisor and Administrator $149,992 and $24,900, respectively, for payments made on behalf of the Company to third party providers of goods and services. At March 31, 2006, an additional $13,076 and $434 has been accrued for and is owing to the Investment Advisor and the Administrator, respectively, for such payments. PFPC Inc. ("PFPC"), a subsidiary of PNC, provides administrative and accounting services to the Company pursuant to a Sub-Administration and Accounting Services Agreement. PFPC Trust Company, another subsidiary of PNC, provides custodian services to the Company pursuant to a Custodian Services Agreement. Also, PFPC provides transfer agency and compliance support services to the Company pursuant to a Transfer Agency Agreement and a Compliance Support Services Agreement, respectively. For the services provided to the Company by

BLACKROCK KELSO CAPITAL CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (Continued) PFPC and its affiliates, PFPC is entitled to an annual fee of 0.02% of the Company's average net assets plus reimbursement of reasonable expenses, and a base fee, payable monthly. For the three months ended March 31, 2006, the Company accrued $55,409 for administrative, accounting, custodian and transfer agency services fees payable to PFPC and its affiliates under the related agreements. On July 25, 2005, in connection with the closing of the Offering, the Company issued approximately 33,333,333 shares of its Common Stock to BlackRock Kelso Capital Holding LLC, an entity for which the Investment Advisor serves as manager, in exchange for total consideration of $500,000,000 ($15.00 per share), consisting of $80,282,060 in cash and a portfolio of short-term investments and cash equivalents valued at $419,717,940. The transaction was effected in accordance with the Company's valuation procedures governing securities transactions with affiliates and was ratified by the Board of Directors. At March 31, 2006, the Investment Advisor beneficially owned indirectly approximately 760,000 shares of the Company's Common Stock, representing approximately 2.1% of the total shares outstanding. At March 31, 2006, other entities affiliated with the Administrator and PFPC beneficially owned indirectly approximately 2,390,000 shares of the Company's Common Stock, representing approximately 6.6% of the total shares outstanding. These percentages of total shares outstanding did not change appreciably from December 31, 2005. At March 31, 2006 and December 31, 2005, an entity affiliated with the Administrator and PFPC owned 36.5% of the members' interests of the Investment Advisor. On March 8, 2006, the Company's Board of Directors authorized the issuance and sale from time to time of up to $2,500,000 in aggregate net asset value of shares of the Company's Common Stock to certain existing and future employees of the Investment Advisor at a price per share equal to the greater of $15.00 or the Company's most recently determined net asset value per share at the time of sale. The sales are expected to be exempt from the registration requirements of the Securities Act of 1933. Pursuant to this authorization, on April 1, 2006 the Company agreed to issue and sell 54,000 shares of Common Stock for aggregate proceeds of $810,000 to certain employees of the Investment Advisor. 4. Earnings Per Share The following information sets forth the computation of basic and diluted net increase in net assets per share resulting from operations for the three months ended March 31, 2006. Numerator for basic and diluted net increase in net assets per share: $7,121,056 Denominator for basic and diluted weighted average shares: 35,685,496 Basic/diluted net increase in net assets per share resulting from operations: $0.20 Diluted net increase in net assets per share resulting from operations equals basic net increase in net assets per share resulting from operations for the period because there were no common stock equivalents outstanding during the period. 5. Purchases and Sales/Repayments of Investments Excluding short-term investments, the Company's purchases and sales/repayments of investments for the three months ended March 31, 2006 totaled $72,653,669 and $6,256,303, respectively. 6. Commitments and Contingencies At March 31, 2006, the Company had a $3.5 million commitment outstanding to fund a senior secured loan. In the normal course of business, the Company enters into contractual agreements that provide general indemnifications against losses, costs, claims and liabilities arising from the performance of individual obligations under such agreements. The Company has had no prior claims or payments pursuant to

BLACKROCK KELSO CAPITAL CORPORATION NOTES TO FINANCIAL STATEMENTS (UNAUDITED) (Continued) such agreements. The Company's individual maximum exposure under these arrangements is unknown, as this would involve future claims that may be made against the Company that have not yet occurred. However, based on management's experience, the Company expects the risk of loss to be remote. 7. Financial Highlights The following per share data and ratios have been derived from information provided in the financial statements. The following is a schedule of financial highlights for a common share outstanding during the three months ended March 31, 2006. Per Share Data: Net asset value, beginning of period $ 14.95 -------------- Net investment income 0.19 Net realized and unrealized gain 0.01 -------------- Total from investment operations 0.20 -------------- Less: Dividends to shareholders from net (0.20) investment income -------------- Net change in net assets - -------------- Net asset value, end of period $ 14.95 ============== Total return (1)(2) 1.34% Ratios / Supplemental Data: Ratio of expenses to average net assets (3) Before management fee waiver 2.56% After management fee waiver 1.56% Ratio of net investment income to average net assets (3) 5.06% Net assets, end of period $ 542,420,327 Portfolio turnover (2) 4% (1) Total return is based on the change in net asset value per share during the period and takes into account dividends and distributions, if any, reinvested in accordance with the Company's dividend reinvestment plan. (2) Not annualized. (3) Annualized. Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations The information contained in this section should be read in conjunction with the financial statements and notes thereto appearing elsewhere in this report. Overview We were incorporated in Delaware on April 13, 2005 and were initially funded on July 25, 2005. Our investment objective is to provide a combination of current income and capital appreciation. We intend to invest primarily in debt and equity securities of private U.S. middle-market companies.

We are externally managed and have elected to be treated as a BDC under the 1940 Act. As a BDC, we are required to comply with certain regulatory requirements. For instance, we generally have to invest at least 70% of our total assets in "qualifying assets," including securities of private U.S. companies, cash, cash equivalents, U.S. government securities and high-quality debt investments that mature in one year or less. On July 25, 2005, we completed the Offering of 35,366,589 shares of our Common Stock at a price of $15.00 per share, less a placement fee of $507,407 and legal fees and other offering costs of $657,639. We received approximately $529.3 million in net proceeds from the Offering. We intend to elect to be treated as a regulated investment company, or a RIC, under Subchapter M of the Code. To qualify as a RIC, we must, among other things, meet certain source-of-income and asset diversification requirements. Pursuant to these elections, we generally will not have to pay corporate-level taxes on any income that we distribute to our shareholders. Portfolio and Investment Activity During the quarter ended March 31, 2006, we invested approximately $72.7 million across six new portfolio companies while adding to one existing position. The new investments were primarily senior loans secured by first or second liens. During the quarter, we received proceeds from principal repayments/dispositions of approximately $6.3 million. At March 31, 2006, our net portfolio consisted of 30 portfolio companies and was invested 37% in senior secured loans, 1% in subordinated debt/corporate notes, 1% in publicly traded, floating rate closed-end funds, less than 1% in common stock/warrants and 61% in short-term investments (including cash equivalents). Our average portfolio company investment was approximately $7 million. Our largest portfolio company investment was approximately $26.5 million, with our five largest portfolio company investments comprising approximately 18% of our net assets at March 31, 2006. Our weighted average yield on invested capital other than closed-end funds, short-term investments and cash equivalents was 10.9% at March 31, 2006 and 10.7% at December 31, 2005. The weighted average yield on our invested capital including closed-end funds, short-term investments and cash equivalents was 7.0% and 6.0%, respectively, at March 31, 2006 and December 31, 2005 and, net of expenses, was 5.5% and 4.4%, respectively, at March 31, 2006 and December 31, 2005. The weighted average yields on our subordinated debt/corporate notes and senior secured loans were 10.7% and 10.9%, respectively, at March 31, 2006, and were 10.3% and 10.8%, respectively, at December 31, 2005. Yields are computed using interest rates and dividend yields as of the purchase date and include amortization of loan origination and commitment fees, original issue discount and market premium or discount, weighted by the value of the respective investment when averaged. At March 31, 2006, 94% of our long-term investments bear interest based on floating rates, such as LIBOR, the Federal Funds Rate or the Prime Rate, and 6% bear interest at fixed rates. At December 31, 2005, more than 99% of our long-term investments bore interest based on floating rates. Results of Operations We commenced operations on July 25, 2005 and, therefore, there is no comparable period from the prior year with which to compare the results of operations for the three months ended March 31, 2006. Operating Income Investment income totaled $8,733,410 for the three months ended March 31, 2006, of which $4,311,775 was attributable to interest and amortization of upfront fees on senior secured loans, $4,125,906 to interest earned on short-term investments and cash equivalents, $143,811 to interest earned on subordinated debt/corporate notes, $151,918 to dividends received from closed-end funds and $102,000 to other income, primarily consent and commitment fees. As we continue to invest in longer-term investments, we expect that we will generate additional income at rates higher than those we received on our investments since our inception of operations, although there can be no assurance that we will achieve this objective.

Operating Expenses Operating expenses for the three months ended March 31, 2006 were $2,053,421, consisting of $1,332,439 in management fees (net of management fee waivers of $1,332,439), $246,575 in administrative services expenses, $213,917 in professional fees, $77,957 in Investment Advisor expenses, $70,188 in director fees, $36,539 in insurance expenses, and $75,806 in other expenses. For the three months ended March 31, 2006, no incentive fee, or Carried Interest, amounts were paid or owed to the Investment Advisor. Net Investment Income Net investment income was $6,679,989 for the three months ended March 31, 2006. Net Realized Loss Net realized loss on investments of $405,166 for the three months ended March 31, 2006 resulted primarily from the disposition of two subordinated debt/corporate notes positions. Net Unrealized Appreciation For the three months ended March 31, 2006, the change in net unrealized appreciation was $846,233, which was comprised of an increase in net unrealized appreciation on investments of $834,193 and a decrease in net unrealized depreciation on cash equivalents of $12,040. Net Increase in Net Assets Resulting From Operations The net increase in net assets resulting from operations for the three months ended March 31, 2006 was $7,121,056. Financial Condition, Liquidity and Capital Resources On July 25, 2005, we completed a private placement of 35,366,589 shares of our Common Stock at a price of $15.00 per share. The net proceeds from the Offering of $529,333,799 consisted of cash of $109,615,859 and a contribution of short-term investments and cash equivalents of $419,717,940. During the three months ended March 31, 2006, we generated cash primarily from cash flows from operations, including interest earned on senior secured loans and subordinated debt/corporate notes, as well as from temporary investments in cash equivalents and other high-quality debt investments that mature in one year or less. In the future, we may also fund a portion of our investments through borrowings from banks and issuances of senior securities. As a business development company, we are subject to regulations governing our operations that affect our ability to raise additional capital. In the future, we may also securitize a portion of our investments in senior secured loans or other assets. At March 31, 2006, we had approximately $256.0 million in cash and cash equivalents and $80.6 million in other short-term investments that we intend to use in our operations. Our primary uses of funds are investments in portfolio companies, payment of fees and other operating expenses and cash distributions to shareholders. Our operating activities resulted in a net use of cash of $32,535,141 for the three months ended March 31, 2006, primarily due to the purchase of investments and the payment of management fees and other expenses. Our financing activities resulted in the use of cash of $476,616 for the three months ended March 31, 2006, to pay the portion of dividends declared during the fiscal quarter that were not reinvested by shareholders. In addition, our non-cash financing activities consisted of $13,761,920 of dividend distributions reinvested. On March 8, 2006, our Board of Directors authorized the issuance and sale from time to time of up to $2,500,000 in aggregate net asset value of shares of our Common Stock to certain existing and future employees of the Investment Advisor at a price per share equal to the greater of $15.00 or our most recently determined net asset value per share at the time of sale. Pursuant to this

authorization, on April 1, 2006 we agreed to issue and sell 54,000 shares of Common Stock for aggregate proceeds of $810,000 to certain employees of the Investment Advisor. Off-Balance Sheet Financing At March 31, 2006, we had a $3.5 million commitment outstanding to fund a senior secured loan. We have no other off-balance sheet contractual obligations or arrangements. Dividends We intend to distribute quarterly dividends to our shareholders. Our quarterly dividends, if any, will be determined by our Board of Directors. On December 22, 2005, we declared an initial dividend of $0.20 per share. On March 8, 2006, we declared a dividend of $0.20 per share for the first quarter of 2006 and, on May 9, 2006, we declared a dividend of $0.23 per share for the second quarter of 2006. Because of our limited operating history, these are the only dividends to date that we have declared on our Common Stock. We intend to elect to be taxed as a regulated investment company, or RIC, under Subchapter M of the Code. To maintain our RIC status, we must distribute annually at least 90% of our ordinary income and realized net short-term capital gains in excess of realized net long-term capital losses, if any, out of the assets legally available for distribution. In order to avoid certain excise taxes imposed on RICs, we currently intend to distribute during each calendar year an amount at least equal to the sum of (1) 98% of our ordinary income for the calendar year, (2) 98% of our capital gains in excess of capital losses for the one-year period ending on October 31st and (3) any ordinary income and net capital gains for preceding years that were not distributed during such years. In addition, although we currently intend to distribute realized net capital gains (i.e., net long-term capital gains in excess of short-term capital losses), if any, at least annually, out of the assets legally available for such distributions, we may in the future decide to retain such capital gains for investment. We maintain an "opt out" dividend reinvestment plan for our common shareholders. As a result, if we declare a dividend, shareholders' cash dividends will be automatically reinvested in additional shares of our Common Stock, unless they specifically "opt out" of the dividend reinvestment plan so as to receive cash dividends. We may not be able to achieve operating results that will allow us to make dividends and distributions at a specific level or to increase the amount of these dividends and distributions from time to time. In addition, we may be limited in our ability to make dividends and distributions due to the asset coverage test for borrowings when applicable to us as a business development company under the 1940 Act and due to provisions in future credit facilities. If we do not distribute a certain percentage of our income annually, we will suffer adverse tax consequences, including possible loss of our status as a regulated investment company. We cannot assure shareholders that they will receive any dividends and distributions or dividends and distributions at a particular level. With respect to the dividends paid to shareholders, income from origination, structuring, closing, commitment and other upfront fees associated with investments in portfolio companies is treated as taxable income and accordingly, distributed to shareholders. For the three months ended March 31, 2006, these fees totaled $327,500. Item 3. Quantitative and Qualitative Disclosures about Market Risk We are subject to financial market risks, including changes in interest rates. At March 31, 2006, 94% of our long-term investments bear interest based on floating rates, such as LIBOR, the Federal Funds Rate or the Prime Rate. The interest rates on such investments generally reset by reference to the current market index after one to six months. In addition, at March 31, 2006, 61% of our investment assets consist of high quality short-term investments and cash equivalents. To illustrate the potential impact of changes in interest rates, we have performed the following analysis based on our March 31, 2006 balance sheet and assuming no changes in our investment structure. Net asset value is analyzed using the assumptions that interest rates, as defined by the LIBOR and U.S. Treasury yield curves, increase or decrease and that the yield curves of the rate shocks will be parallel to each other. Under this analysis, an

instantaneous 100 basis point increase in LIBOR and U.S. Treasury yields would cause a decline of approximately $602,000 in the value of our net assets at March 31, 2006. While hedging activities may insulate us against adverse changes in interest rates, they may also limit our ability to participate in the benefits of lower interest rates with respect to our portfolio of investments. During the three months ended March 31, 2006, we did not engage in any hedging activities. Item 4. Controls and Procedures As of the end of the period covered by this report, the Company carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15 under the Securities Exchange Act of 1934). Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our current disclosure controls and procedures are effective in timely alerting them to material information relating to the Company that is required to be disclosed by us in the reports we file or submit under the Securities Exchange Act of 1934. There have been no changes in our internal control over financial reporting that occurred during our most recently completed fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. PART II. OTHER INFORMATION Item 1. Legal Proceedings We are not a party in any material pending legal proceeding, and no such proceedings are known to be contemplated. Item 1A. Risk Factors Not required. Item 2. Unregistered Sales of Equity Securities and Use of Proceeds Not required. Item 3. Defaults Upon Senior Securities None. Item 4. Submission of Matters to a Vote of Security Holders None. Item 5. Other Information None.

Item 6. Exhibits (a) Exhibits. 31.1 Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.2 Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 32 Certification of CEO and CFO Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. BLACKROCK KELSO CAPITAL CORPORATION Date: May 10, 2006 By: /s/ James R. Maher ----------------------- James R. Maher Chief Executive Officer Date: May 10, 2006 By: /s/ Frank D. Gordon ----------------------- Frank D. Gordon Chief Financial Officer


EXHIBIT  31.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, James R. Maher, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of BlackRock Kelso
     Capital Corporation;

2.   Based on my knowledge, this report does not contain any untrue statement
     of a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the registrant as of, and, for, the period presented in this report;

4.   The registrant's other certifying officer and I are responsible for
     establishing and maintaining disclosure controls and procedures (as
     defined in Exchange Act Rules 13a-15(e) and 15d-15(c)) and have:

     (a)  Designed such disclosure controls and procedures, or caused such
          disclosure controls and procedures to be designed under our
          supervision, to ensure that material information relating to the
          registrant, including its consolidated subsidiaries, is made known to
          us by others within those entities, particularly during the period in
          which this report is being prepared;

     (b)  Not applicable (until the first fiscal year ending after July 15,
          2007).

     (c)  Evaluated the effectiveness of the registrant's disclosure controls
          and procedures and presented in this report our conclusions about the
          effectiveness of the disclosures controls and procedures, as of the
          end of the period covered by this report based on such evaluation;
          and

     (d)  Disclosed in this report any change in the registrant's internal
          control over financial reporting that occurred during the
          registrant's most recent fiscal quarter that has materially affected,
          or is reasonably likely to materially affect, the registrant's
          internal control over financial reporting; and

5.   The registrant's other certifying officer and I have disclosed, based on
     our most recent evaluation of internal control over financial reporting,
     to the registrant's auditors and the audit committee of the registrant's
     board of directors (or persons performing the equivalent functions):

     (a)  All significant deficiencies and material weaknesses in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the registrant's ability to
          record, process, summarize and report financial information; and

     (b)  Any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrant's internal
          control over financial reporting.


Date: May 10, 2006                          /s/James R. Maher
                                            -------------------
                                            Name:  James R. Maher
                                            Title: Chief Executive Officer

EXHIBIT  31.2

                    CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Frank D. Gordon, certify that:

1.   I have reviewed this quarterly report on Form 10-Q of BlackRock Kelso
     Capital Corporation;

2.   Based on my knowledge, this report does not contain any untrue statement
     of a material fact or omit to state a material fact necessary to make the
     statements made, in light of the circumstances under which such statements
     were made, not misleading with respect to the period covered by this
     report;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the registrant as of, and, for, the period presented in this report;

4.   The registrant's other certifying officer and I are responsible for
     establishing and maintaining disclosure controls and procedures (as
     defined in Exchange Act Rules 13a-15(e) and 15d-15(c)) and have:

     (a)  Designed such disclosure controls and procedures, or caused such
          disclosure controls and procedures to be designed under our
          supervision, to ensure that material information relating to the
          registrant, including its consolidated subsidiaries, is made known to
          us by others within those entities, particularly during the period in
          which this report is being prepared;

     (b)  Not applicable (until the first fiscal year ending after July 15,
          2007).

     (c)  Evaluated the effectiveness of the registrant's disclosure controls
          and procedures and presented in this report our conclusions about the
          effectiveness of the disclosures controls and procedures, as of the
          end of the period covered by this report based on such evaluation;
          and

     (d)  Disclosed in this report any change in the registrant's internal
          control over financial reporting that occurred during the
          registrant's most recent fiscal quarter that has materially affected,
          or is reasonably likely to materially affect, the registrant's
          internal control over financial reporting; and

5.   The registrant's other certifying officer and I have disclosed, based on
     our most recent evaluation of internal control over financial reporting,
     to the registrant's auditors and the audit committee of the registrant's
     board of directors (or persons performing the equivalent functions):

     (a)  All significant deficiencies and material weaknesses in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the registrant's ability to
          record, process, summarize and report financial information; and

     (b)  Any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrant's internal
          control over financial reporting.


Date: May 10, 2006                             /s/ Frank D. Gordon
                                               -----------------------
                                               Name:  Frank D. Gordon
                                               Title: Chief Financial Officer


EXHIBIT  32


                    Certification of CEO and CFO Pursuant to
                            18 U.S.C. Section 1350,
                             as Adopted Pursuant to
                 Section 906 of the Sarbanes-Oxley Act of 2002


In connection with the Quarterly Report on Form 10-Q of BlackRock Kelso Capital
Corporation (the "Company") for the quarter ending March 31, 2006 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), James
R. Maher, as Chief Executive Officer of the Company, and Frank D. Gordon, as
Chief Financial Officer of the Company, each hereby certifies, pursuant to
ss.18 U.S.C. ss.1350, as adopted pursuant to ss.906 of the Sarbanes-Oxley Act
of 2002, that, to the best of his knowledge:

         (1) The Report fully complies with the requirements of section 13(a)
         or 15(d) of the Securities Exchange Act of 1934; and

         (2) The information contained in the Report fairly presents, in all
         material respects, the financial condition and results of operations
         of the Company.



/s/  James R. Maher
- --------------------------
Name: James R. Maher
Title: Chief Executive Officer
Date: May 10, 2006


/s/  Frank D. Gordon
- --------------------------
Name: Frank D. Gordon
Title: Chief Financial Officer
Date: May 10, 2006


This certification accompanies the report pursuant to ss.906 of the
Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by the
Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of
ss.18 of the Securities Exchange Act of 1934, as amended.

A signed original of this certification required by ss.906 has been provided to
the Company and will be retained by the Company and furnished to the Securities
and Exchange Commission or its staff upon request.