v3.25.2
DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME (Tables)
 6 Months Ended
Jun. 30, 2025
Income Tax Disclosure [Abstract]  
Schedule of Dividend Information
Summarized dividend information for the three and six months ended June 30, 2025 and 2024 is as follows:
Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
(in thousands, except per share amounts)
Regular monthly dividends per share$0.75 $0.72 $1.50 $1.44 
Supplemental quarterly dividends per share0.30 0.30 0.60 0.60 
Total dividends per share$1.05 $1.02 $2.10 $2.04 
Total regular monthly dividends paid$66,908 $61,958 $133,416 $123,226 
Total supplemental quarterly dividends paid26,818 25,996 53,457 51,563 
Total dividends paid$93,726 $87,954 $186,873 $174,789 
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 six months ended June 30, 2025 and 2024.
Six Months Ended June 30,

20252024
(estimated, in thousands)
Net increase in net assets resulting from operations$238,616 $209,835 
Book-tax difference from share-based compensation expense(15,311)(10,123)
Net unrealized appreciation(44,239)(63,693)
Income tax provision11,642 22,010 
Pre-tax book income not consolidated for tax purposes(85,884)(33,694)
Book income and tax income differences, including debt origination, structuring fees, dividends, realized gains and changes in estimates52,988 29,576 
Estimated taxable income (1)157,812 153,911 
Taxable income earned in prior year and carried forward for distribution in current year120,488 56,142 
Taxable income earned prior to period end and carried forward for distribution next period(113,496)(55,633)
Dividend payable as of period end and paid in the following period22,767 21,205 
Total distributions accrued or paid to common stockholders$187,571 $175,625 
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(1)MSCC’s taxable income for each period is an estimate and will not be finally determined until MSCC files its tax return for each year. Therefore, the final taxable income, and the taxable income earned in each period and carried forward for distribution in the following period, may be different than this estimate.
Schedule of Net Investment Income Related Taxes Main Street’s net investment income related taxes were comprised of the following for the three and six months ended June 30, 2025 and 2024:
Three Months Ended June 30,Six Months Ended June 30,
2025202420252024
(in thousands)
Net investment income taxes
Current tax expense (benefit):
Federal$(164)$329 $— $657 
State and other487 997 1,147 1,878 
Excise818 272 2,159 1,193 
Total current tax expense1,141 1,598 3,306 3,728 
Deferred tax expense:
Federal3,575 1,600 5,470 2,398 
State and other435 203 288 650 
Total deferred tax expense4,010 1,803 5,758 3,048 
Total net investment income tax provision$5,151 $3,401 $9,064 $6,776 
Investment valuation related taxes
Current tax expense:
Federal$4,071 $— $4,391 $— 
Total current tax expense4,071 — 4,391 — 
Deferred tax expense (benefit):
Federal(3,343)7,267 (72)14,120 
State and other(1,610)402 (1,741)1,114 
Total deferred tax expense (benefit)(4,953)7,669 (1,813)15,234 
Total investment valuation related income tax provision (benefit)$(882)$7,669 $2,578 $15,234 
Total income tax provision$4,269 $11,070 $11,642 $22,010