N-2 - USD ($)
$ / shares in Units, $ in Thousands

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Cover [Abstract]

Entity Central Index Key

0001930679

Amendment Flag

false

Securities Act File Number

814-01620

Document Type

10-K

Entity Registrant Name

KKR FS Income Trust

Entity Address, Address Line One

201 Rouse Boulevard

Entity Address, City or Town

Philadelphia

Entity Address, State or Province

PA

Entity Address, Postal Zip Code

19112

City Area Code

215

Local Phone Number

495-1150

Entity Well-known Seasoned Issuer

No

Entity Emerging Growth Company

true

Entity Ex Transition Period

false

Financial Highlights [Abstract]

Senior Securities [Table Text Block]

Information about the Company’s senior securities is shown in the table below for the years ended December 31, 2024 and 2023:

Year Ended December 31,	Total Amount Outstanding Exclusive of Treasury Securities	Asset Coverage per Unit(1)	Involuntary Liquidation Preference per Unit(2)	Average Market Value per Unit(3) (Exclude Bank Loans)
2023	$94,746	$3,574	—	N/A
2024	$229,355	$4,616	—	N/A

__________

(1)Asset coverage per unit is the ratio of the carrying value of the Company’s total consolidated assets, less all liabilities and indebtedness not represented by senior securities, to the aggregate amount of senior securities representing indebtedness. This asset coverage ratio is multiplied by $1,000 to determine the “Asset Coverage per Unit”.

(2)The amount to which such class of senior security would be entitled upon the voluntary liquidation of the Company in preference to any security junior to it. The “—” in this column indicates that the SEC expressly does not require this information to be disclosed for certain types of senior securities.

(3)Not applicable because senior securities are not registered for public trading on an exchange.

Senior Securities Amount

$ 229,355

$ 94,746

Senior Securities Coverage per Unit

$ 4,616

$ 3,574

Senior Securities, Note [Text Block]

Senior Securities Asset Coverage

Information about the Company’s senior securities is shown in the table below for the years ended December 31, 2024 and 2023:

Year Ended December 31,	Total Amount Outstanding Exclusive of Treasury Securities	Asset Coverage per Unit(1)	Involuntary Liquidation Preference per Unit(2)	Average Market Value per Unit(3) (Exclude Bank Loans)
2023	$94,746	$3,574	—	N/A
2024	$229,355	$4,616	—	N/A

__________

(1)Asset coverage per unit is the ratio of the carrying value of the Company’s total consolidated assets, less all liabilities and indebtedness not represented by senior securities, to the aggregate amount of senior securities representing indebtedness. This asset coverage ratio is multiplied by $1,000 to determine the “Asset Coverage per Unit”.

(2)The amount to which such class of senior security would be entitled upon the voluntary liquidation of the Company in preference to any security junior to it. The “—” in this column indicates that the SEC expressly does not require this information to be disclosed for certain types of senior securities.

(3)Not applicable because senior securities are not registered for public trading on an exchange.

General Description of Registrant [Abstract]

NAV Per Share

$ 29.56

$ 28.84

$ 25.82