South Carolina: corporate income tax, a franchise (privilege) tax and an annual report required.
Each fact below cites the agency page we read and the day we read it. Where a rule is still being confirmed, the page says so instead of showing a zero.
Verified facts
Corporate income tax
Yes
5% of South Carolina taxable income
Franchise or privilege
Yes
Entity annual report
Yes
annual · The annual report is Schedule D of the SC1120 and is filed with the return, due the 15th day of the fourth month after the end of the business year
Return due date
Published rule
15th day of the fourth month after the end of the business year (April 15 for calendar-year filers)
Extension
Available
Zero activity / minimum tax
C corporations must file SC1120 annually regardless of any income or business in the period, including the annual report (Schedule D) and payment of the license fee.
Long-form guide in professional review
Dates, extensions and payments
Filing and payment dates stay separate wherever the source supports it.
- Filing
Return filing
15th day of the fourth month after the end of the business year (April 15 for calendar-year filers)
Same rule for fiscal-year filers, keyed to the close of the business year. Initial and final returns are excepted from the general rule.
- Extension
Extension
Does not extend paymentMust be requested
- Entity report
Entity report
annualThe annual report is Schedule D of the SC1120 and is filed with the return, due the 15th day of the fourth month after the end of the business year
Email me the South Carolina guide
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Frequently asked questions
Does South Carolina impose a corporate income tax?
Yes. 5% of South Carolina taxable income Form: SC1120, C Corporation Income Tax Return.
Does South Carolina charge a franchise or privilege tax?
Yes. Check the fact chip and the linked official source before budgeting for it.
When is the South Carolina corporate return due?
15th day of the fourth month after the end of the business year (April 15 for calendar-year filers)
Does an extension also postpone the tax payment?
No. The extension moves the filing date, not the payment date; unpaid tax can accrue penalty and interest.
Related states
Chosen because their corporate filing profile matches this one.
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