Quarterly report [Sections 13 or 15(d)]

DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME (Tables)

v3.25.3
DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME (Tables)
 9 Months Ended
Sep. 30, 2025
Income Tax Disclosure [Abstract]  
Schedule of Dividend Information
Summarized dividend information for the three and nine months ended September 30, 2025 and 2024 is as follows:
Three Months Ended September 30, Nine Months Ended September 30,
2025 2024 2025 2024
(in thousands, except per share amounts)
Regular monthly dividends per share $ 0.765  $ 0.735  $ 2.265  $ 2.175 
Supplemental quarterly dividends per share 0.30  0.30  0.90  0.90 
Total dividends per share $ 1.065  $ 1.035  $ 3.165  $ 3.075 
Total regular monthly dividends paid $ 68,543  $ 64,160  $ 201,959  $ 187,385 
Total supplemental quarterly dividends paid 26,907  26,405  80,364  77,968 
Total dividends paid $ 95,450  $ 90,565  $ 282,323  $ 265,353 
Schedule of Taxable Income and to Total Distributions Declared to Common Stock Reconciliation
Listed below is a reconciliation of “Net increase in net assets resulting from operations” to taxable income and to total distributions declared to common stockholders for the nine months ended September 30, 2025 and 2024.
Nine Months Ended
September 30,

2025 2024
(estimated, in thousands)
Net increase in net assets resulting from operations $ 362,287  $ 333,847 
Book-tax difference from share-based compensation expense (9,878) (5,256)
Net unrealized appreciation (107,217) (85,431)
Income tax provision 21,360  33,719 
Pre-tax book income not consolidated for tax purposes (96,943) (72,335)
Book income and tax income differences, including debt origination, structuring fees, dividends, realized gains and changes in estimates 75,778  35,962 
Estimated taxable income (1) 245,387  240,506 
Taxable income earned in prior year and carried forward for distribution in current year 120,488  56,142 
Taxable income earned prior to period end and carried forward for distribution next period (105,651) (51,664)
Dividend payable as of period end and paid in the following period 22,832  21,575 
Total distributions accrued or paid to common stockholders $ 283,056  $ 266,559 
___________________________
(1)MSCC’s taxable income for each period is an estimate and will not be finally determined until MSCC files its tax return for each year. Therefore, the final taxable income, and the taxable income earned in each period and carried forward for distribution in the following period, may be different than this estimate.
Schedule of Net Investment Income Related Taxes Main Street’s provision for income taxes was comprised of the following for the three and nine months ended September 30, 2025 and 2024:
Three Months Ended
September 30,		 Nine Months Ended
September 30,
2025 2024 2025 2024
(in thousands)
Net investment income taxes
Current tax expense:
Federal $ —  $ 374  $ —  $ 1,031 
State and other 1,121  1,625  2,268  3,502 
Excise 838  458  2,997  1,652 
Total current tax expense 1,959  2,457  5,265  6,185 
Deferred tax expense (benefit):
Federal 864  1,021  6,334  3,420 
State and other 154  (262) 442  387 
Total deferred tax expense 1,018  759  6,776  3,807 
Total net investment income tax provision $ 2,977  $ 3,216  $ 12,041  $ 9,992 
Investment valuation related taxes
Current tax expense:
Federal $ 2,578  $ —  $ 6,969  $ — 
Total current tax expense 2,578  —  6,969  — 
Deferred tax expense (benefit):
Federal 3,774  8,318  3,702  22,438 
State and other 389  175  (1,352) 1,289 
Total deferred tax expense 4,163  8,493  2,350  23,727 
Total investment valuation related income tax provision $ 6,741  $ 8,493  $ 9,319  $ 23,727 
Total income tax provision $ 9,718  $ 11,709  $ 21,360  $ 33,719