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]

Cover
- Cover
- Audit Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
Notes Tables
Notes Details

BORROWINGS - Schedule of Line of Credit Facilities (Details)

v3.25.3

BORROWINGS - Schedule of Line of Credit Facilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Borrowings outstanding, at cost	$ 0	$ 70,600
Credit Facility \| Revolving Line of Credit \| Line of Credit
Debt Instrument [Line Items]
Commitment amount	320,000	293,659
Borrowings outstanding, at cost	0	70,600
Availability	307,467	200,381
Weighted average borrowings outstanding, at cost	$ 40,212	$ 70,572	$ 133,692
Weighted average interest rate	13.80%	11.00%	8.00%
Commitment (unused) fees incurred	$ 2,575	$ 1,696	$ 624

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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