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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

​A corporation or unincorporated entity operating in South Carolina, that is required to file a federal Form 990T to report unrelated business income, must file a SC990-T​, Exempt Organization Business Tax return. The Corporate Income Tax rate on Tax Exempt Organizations filing the SC990-T is 5% on South Carolina taxable income.

Getting Started: Opening your Tax-Exempt Organization Tax account with the SCDOR

  • Filing a Corporate Tax return automatically registers you with the SCDOR. On your first return, check the Initial Return box on the front of the SC990-T​.
  • Once your Corporate Income Tax account is registered with the SCDOR, we’ll send you a Corporate Registration Filing Requirements letter (SC1070). This letter includes important information about your Corporate Income Tax filing requirements. 
  • To avoid processing delays, be sure to include your FEIN on all returns, payments, and correspondence sent to the SCDOR.​

How to file and pay

Tax Exempt Organizations are required to file the SC990-T​ annually with the SCDOR if: 

  • The entity operates in South Carolina, and 
  • Files a federal Form 990-T reporting unrelated business income

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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
​Your SC990-T​ and your tax payment is due by the 15th day of the fifth month after the end of your business year. ​

​​​​​​​​​​​​​​​ ​​​​​​Business Income Tax Refund
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