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What is a South Carolina SID Number?


I am setting up a filing calendar for South Carolina and I need my South Carolina SID Number


Avalara Returns



  • When you fill out your company and banking information, one of the unique fields for South Carolina File is the SID number.
  • Obtain your SID directly from the Department of Revenue. 
    • The first 7 digits is a unique number used for all tax types.
      • Use this part of the number for the SID number South Carolina File.
    • Use the entire 11 digit number on all correspondence to the Department of Revenue.