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Single Company
Multi Company
Multi Company
Multi Company
Tax Professional
Multi Company
For Illinois Bookkeepers, Accountants and any company required to file sales & use tax returns with the Illinois Department of Revenue.
  1. Purchase STP Illinois software CD (immediate download also included).
  2. Install STP Illinois on your Windows computer.
  3. Prepare unlimited returns for an unlimited number of companies through the current tax year.
  4. Illinois Department of Revenue tax form and rates changes will automatically download through the current tax year.
  5. STP will prompt you each year on January 20 for optional renewal at the same price.  Never a need to re-install STP.
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