Gladstone Capital Corporation Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

FEDERAL AND STATE INCOME TAXES (Details)

FEDERAL AND STATE INCOME TAXES (Details) - USD ($)	12 Months Ended
FEDERAL AND STATE INCOME TAXES (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Dec. 31, 2023	Sep. 30, 2023
Schedule of Investments [Abstract]
Investment company, target percentage of taxable income to distribute to shareholders (up to)	100.00%
Income tax provisions	$ 0		$ 0		$ 0
Investment company, percentage of ordinary income distribution	98.00%
Investment company, percentage of net capital gains distribution	98.20%
Excise tax		$ 100,000		$ 0

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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+ Details