Residents of SC are taxed on their entire income, regardless of where it was earned, unless specifically exempted by law.
Electronic filing: file your return electronically by the April 15, 2026 due date and pay your balance due electronically by May 1, 2026 to avoid penalties and interest.
Processing: processing your return and refund is expected to take up to 8 weeks from the date you filed.
Fiscal year: a return for a fiscal year tax period is due by the 15th day of the fourth month following the close of your tax year.
Refund claim: in general, a claim for refund must be filed within three years from the date the return was filed or originally due.
| Question | Answer |
|---|---|
| Form Name | Form SC1040 |
| Form Length | 3 pages |
| Fillable? | No |
| Fillable fields | 0 |
| Avg. time to fill out | 9 min |
| Edition | 4/21/25 |
| Issuing agency | State of South Carolina Department of Revenue |
| Where to send | Refunds or zero tax: SC1040 Processing Center, PO Box 101100, Columbia, SC 29211-0100 |
| Filing deadline | April 15, 2026 |
| Matches the agency's file | Yes, checked October 1, 2026 |
| Other names | SC1040, SC 1040, Form SC1040, SC1040 Form, South Carolina 1040, Individual Income Tax Return |
| Official source | Form SC1040 (Rev 4/21/25), South Carolina Department of Revenue |
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