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South Carolina Department of Revenue
Corporate Tax
POC: Corporate Income Tax

Columbia, SC 29214-0025

Phone: 803-898-5000
Fax: 803-896-1682

​What's New:

SC1120T Application for Automatic Extension of Time

The SC1120T Application for Automatic Extension of Time to File Corporation Tax Return has been modified from the prior year.

  • Line 1 for the tentative tax due should be the net income tax due after deducting: withholding credited to the taxpayer, estimated income tax payments (including last year’s overpayment transferred) and/or income tax credits.
  • Line 2 for the license fee is the net license fee due after deducting any credits against license fees.
  • Line 3 is the total of lines 1 and 2.
  • Do NOT enter less than zero for lines 1 or 2.

Always enter your South Carolina Corporate File #, FEIN and the income accounting period end (not a quarter end period).