Sales Tax is not Calculated Correctly in Sales Order Or Accounts Receivable for Sage 100


Sales tax is not calculated correctly in Sales Order or Accounts Receivable in Sage 100


Sales tax is not calculated or is miscalculated when the following occurs:

  • Sales Tax Class is not selected in Sales Tax Code Maintenance for sales
  • Sales Tax Rate is not correct in Sales Tax Code Maintenance
  • Sales Tax Schedule does not contain the correct Sales Tax Codes


  1. Open Library Master, Setup, Sales Tax Class Maintenance
    • Select Sales Tax Schedule assigned to Customer
    • Verify the correct Sales Tax Codes are selected
    • Leave window open
  2. Open Library MasterSetupSales Tax Code Maintenance
    • Select, Sales Tax Code(s) from Sales Tax Schedule above
    • Verify, Sales Tax Rate percentage, change if not correct
    • Check, Sales box to use in Sales Order and Accounts Receivable
    • Click, Accept
    • Repeat for all Sales Tax Codes assigned to the Sales Tax Schedule