Exhibit 99.1

FS KKR Capital Corp. Announces First Quarter 2023 Results

Declares Second Quarter 2023 Distribution of $0.70 per share

Declares Special Distributions Totaling $0.15 per share to Be Paid in Three Equal Installments of $0.05 per share in Each of the Next Three Quarters

PHILADELPHIA, PA AND NEW YORK, NY – May 5, 2023 – FS KKR Capital Corp. (NYSE: FSK), today announced its financial and operating results for the quarter ended March 31, 2023, and that its board of directors has declared a second quarter 2023 distribution of $0.70 per share, and special distributions totaling $0.15 per share, which will be paid in three equal installments of $0.05 per share in each of the next three quarters.

Financial and Operating Highlights for the Quarter Ended March 31, 2023⁽¹⁾

“We are pleased to start 2023 with another quarter of positive results, as our first quarter adjusted net investment income per share increased 8% year-over-year and our Net Asset Value per share increased to $24.93,” said Michael C. Forman, Chief Executive Officer & Chairman. “Based on our strong quarterly results, coupled with the overall strength of our investment portfolio, we are excited to announce a second quarter cash distribution totaling $0.70 per share, as well as special cash distributions totaling $0.15 per share which will be paid in three equal installments over the remainder of the year. Going forward, we believe our conservatively structured balance sheet and defensively positioned investment portfolio will enable us to continue delivering strong results for our shareholders.”

Declaration of Distribution for Second Quarter 2023

FSK’s board of directors has declared a cash distribution for the second quarter of $0.70 per share, consisting of a base distribution of $0.64 per share and a supplemental distribution of $0.06 per share, which will be paid on or about July 5, 2023, to stockholders of record as of the close of business on June 14, 2023. FSK’s board of directors has declared special distributions totaling $0.15 per share to be paid in three equal installments by the end of 2023. The first $0.05 per share special distribution will be paid on or about May 31, 2023, to stockholders of record as of the close of business on May 17, 2023. The second $0.05 per share special distribution will be paid on or about August 30, 2023, to stockholders of record as of the close of business on August 16, 2023. The third $0.05 per share special distribution will be paid on or about November 29, 2023, to stockholders of record as of the close of business on November 15, 2023.

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Portfolio Highlights as of March 31, 2023

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Leverage and Liquidity as of March 31, 2023

Conference Call Information

FSK will host a conference call at 9:00 a.m. (Eastern Time) on Friday, May 5, 2023, to discuss its first quarter 2023 financial and operating results. All interested parties are welcome to participate and can access the live conference call by registering using the following URL: https://register.vevent.com/register/BIa89f54f9964344a292794a5e367a233d. Participants are requested to register a day in advance or at a minimum 15 minutes before the start of the call. Once registered, they will receive the dial-in numbers and their unique PIN number. When they dial in, they will input their PIN and be placed into the call. The conference call will also be webcast, which can be accessed from the Investor Relations section of FSK’s website at www.fskkradvisor.com under Events.

A replay of the call will be available shortly after the end of the call by visiting the Investor Relations section of FSK’s website under Events or by using the following URL: https://edge.media-server.com/mmc/p/r6r4prhf.

Supplemental Information

An investor presentation containing financial and operating information will be made available prior to the call in the Investor Relations section of FSK’s website at www.fskkradvisor.com under Earnings presentations.

About FS KKR Capital Corp.

FSK is a leading publicly traded business development company (BDC) focused on providing customized credit solutions to private middle market U.S. companies. FSK seeks to invest primarily in the senior secured debt and, to a lesser extent, the subordinated debt of private middle market companies. FSK is advised by FS/KKR Advisor, LLC. For more information, please visit www.fskkradvisor.com.

About FS/KKR Advisor, LLC

FS/KKR Advisor, LLC (FS/KKR) is a partnership between FS Investments and KKR Credit that serves as the investment adviser to FSK.

FS Investments is a leading asset manager dedicated to helping individuals, financial professionals and institutions design better portfolios. The firm provides access to alternative sources of income and growth, and focuses on setting industry standards for investor protection, education and transparency. FS Investments is headquartered in Philadelphia, PA with offices in New York, NY, Orlando, FL and Leawood, KS. Visit www.fsinvestments.com to learn more.

KKR Credit is a subsidiary of KKR & Co. Inc., a leading global investment firm that manages multiple alternative asset classes, including private equity, credit and real assets, with strategic manager partnerships that manage hedge funds. KKR aims to generate attractive investment returns for its fund investors by following a patient and disciplined investment approach, employing world-class people, and driving growth and value creation with KKR portfolio companies. KKR invests its own capital alongside the capital it manages for fund investors and provides financing solutions and investment opportunities through its capital markets business. References to KKR’s investments may include the activities of its sponsored funds. For additional information about KKR & Co. Inc. (NYSE: KKR), please visit KKR’s website at www.kkr.com and on Twitter @KKR_Co.

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Forward-Looking Statements and Important Disclosure Notice

This announcement may contain certain forward-looking statements, including statements with regard to future events or future performance or operations of FSK. Words such as “believes,” “expects,” “projects,” and “future” or similar expressions are intended to identify forward-looking statements. These forward-looking statements are subject to the inherent uncertainties in predicting future results and conditions. Certain factors could cause actual results to differ materially from those projected in these forward-looking statements. Factors that could cause actual results to differ materially include changes in the economy, risks associated with possible disruption in FSK’s operations or the economy generally due to terrorism, geo-political risks, natural disasters or pandemics such as COVID-19, future changes in laws or regulations and conditions in FSK’s operating area and the price at which shares of FSK’s common stock trade on the New York Stock Exchange. Some of these factors are enumerated in the filings FSK makes with the SEC. FSK undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The press release above contains summaries of certain financial and statistical information about FSK. The information contained in this press release is summary information that is intended to be considered in the context of FSK’s SEC filings and other public announcements that FSK may make, by press release or otherwise, from time to time. FSK undertakes no duty or obligation to update or revise the information contained in this press release. In addition, information related to past performance, while helpful as an evaluative tool, is not necessarily indicative of future results, the achievement of which cannot be assured. Investors should not view the past performance of FSK, or information about the market, as indicative of FSK’s future results.

Other Information

The information in this press release is summary information only and should be read in conjunction with FSK’s quarterly report on Form 10-Q for the quarter ended March 31, 2023, which FSK filed with the U.S. Securities and Exchange Commission (the SEC) on May 5, 2023, as well as FSK’s other reports filed with the SEC. A copy of FSK’s quarterly report on Form 10-Q for the quarter ended March 31, 2023 and FSK’s other reports filed with the SEC can be found on FSK’s website at www.fskkradvisor.com and the SEC’s website at www.sec.gov.

Certain Information About Distributions

The determination of the tax attributes of FSK’s distributions is made annually as of the end of its fiscal year based upon its taxable income and distributions paid, in each case, for the full year. Therefore, a determination as to the tax attributes of the distributions made on a quarterly basis may not be representative of the actual tax attributes for a full year. FSK intends to update stockholders quarterly with an estimated percentage of its distributions that resulted from taxable ordinary income. The actual tax characteristics of distributions to stockholders will be reported to stockholders annually on Form 1099-DIV.

The timing and amount of any future distributions on FSK’s shares of common stock are subject to applicable legal restrictions and the sole discretion of its board of directors. There can be no assurance as to the amount or timing of any such future distributions.

FSK may fund its cash distributions to stockholders from any sources of funds legally available to it, including net investment income from operations, capital gains proceeds from the sale of assets, non-capital gains proceeds from the sale of assets, dividends or other distributions paid to it on account of preferred and common equity investments in portfolio companies, proceeds from the sale of shares of FSK’s common stock and borrowings. FSK has not established limits on the amount of funds it may use from available sources to make distributions. There can be no assurance that FSK will be able to pay distributions at a specific rate or at all.

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Contact Information:

Investor Relations Contact

Robert Paun

Robert.Paun@fsinvestments.com

FS Investments Media Team

Melanie Hemmert

Melanie.Hemmert@fsinvestments.com

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Consolidated Statements of Operations

(in millions, except share and per share amounts)

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Consolidated Balance Sheets

(in millions, except share and per share amounts)

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Non-GAAP Financial Measures

This press release contains certain financial measures that have not been prepared in accordance with generally accepted accounting principles in the United States (GAAP). FSK uses these non-GAAP financial measures internally in analyzing financial results and believes that the use of these non-GAAP financial measures is useful to investors as an additional tool to evaluate ongoing results and trends and in comparing FSK’s financial results with other BDCs.

Non-GAAP financial measures are not meant to be considered in isolation or as a substitute for comparable GAAP financial measures, and should be read only in conjunction with FSK’s consolidated financial statements prepared in accordance with GAAP. A reconciliation of non-GAAP financial measures to the most directly comparable GAAP measures has been provided in this press release, and investors are encouraged to review the reconciliation.

Reconciliation of Non-GAAP Financial Measures⁽¹⁾

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