MSC Income Fund 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

SHARE REPURCHASES - Narrative (Details)

v3.25.4

SHARE REPURCHASES - Narrative (Details) $ in Thousands		12 Months Ended			19 Months Ended	46 Months Ended
SHARE REPURCHASES - Narrative (Details) $ in Thousands	Jan. 29, 2025 USD ($) plan	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share repurchase program, authorized, amount	$ 65,000
Share purchase program, period in force	12 months
Share repurchase program, number of active plans \| plan	2
Payments for repurchase of common stock		$ 11,647	$ 20,724	$ 24,427
Share Repurchase Program
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Payments for repurchase of common stock			16,200	16,600		$ 58,900
Dutch Auction
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Payments for repurchase of common stock			$ 4,500	$ 7,800	$ 12,300
Main Street
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share repurchase program, authorized, amount	$ 20,000
Common Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average number of shares of common stock outstanding, percentage (as a percent)		2.50%
Percentage of cash retained dividend reinvestment plan (as a percent)		90.00%

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