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Phone: 1-844-898-8542​​ ​

Email: CorpTax@dor.sc.gov

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​​​​​​​BEGINNING OCTOBER 1, 2022: Paper forms will no longer be accepted
You will be required to electronically file and pay your returns after October 1, 2022​​. Read our latest article for more informatio​n and see other Accommodations Tax tips.

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​​Tax Exempt Organizations

​Every corporation or unincorporated entity operating in South Carolina that is required to file the federal Form 990-T to report unrelated business income must file a Exempt Organization Business Tax Return (SC990-T) form with the SCDOR and is subject to 5% Income Tax. A License Fee is not required.

How to file and pay

Generally, Corporate taxpayers whose South Carolina tax liability is $15,000 or more per filing period must file and pay electronically.​


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​File electronically with a third party​​
The SCDOR's ​online business services page provides instructions for setting up electronic filing with a third party vendor​, located under Corporate.​​

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Pay electronically on ​​M​yDORWAY
MyDORWAY​ is the preferred way to securely make payments using a credit card or electronic check (ACH Debit or Electronic Funds Withdrawal). 
Need a MyDORWAY account?​ Sign up
Have questions? See MyDORWAY help

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File by paper
Tax-exempt organizations with unrelated business income must file the Exempt Organization Business Tax Return (SC990-T​).

​​​​​​​​​​​​​​​ ​​​​​​Due dates
The Exempt Organization Business Tax Return (SC990-T) is due on or before the 15th day of the fifth month after the close of the taxable year.
The ​Application for Automatic Extension of Time to File Corporate Tax Returns (SC1120-T) is due to be filed on or before the 15th day of the fifth month after the close of the taxable year.

​​​​​​​​​​​​​​​ ​​​​​​Business Income Tax Refund Status
Check the status of your current year South Carolina Business Income Tax refund by entering ​the following information on MyDORWAY:

  • FEIN (Federal Employer Identification Number)
  • Refund Amount

Mailing Addresses

​​Refund or Zero ReturnBalance Due ReturnEstimated Tax (SC1120CDP),  Tentative (SC1120T), or Voucher (SC1120V) 
​Correspondence
​​Refund or Zero Return​​South Carolina Department of Revenue
Corporate Refund
PO Box 125
Columbia, SC 29214-0032
Balance Due Return​ ​South Carolina Department of Revenue
Corporate Tax
PO Box 100151
Columbia, SC 29202
CDP, Tentative or S-WH​​South Carolina Department of Revenue
Corporate Voucher
PO Box 100153
Columbia, SC 29202
​South Carolina Department of Revenue 
Corporate Tax 
PO Box 125
Columbia, SC 29214-0400