Free iSeries Sales Tax Calculator Software

  • Fully self contained iSeries resident system
  • API makes integration into existing systems simple
  • Cost effective alternative to Avalara and Vertex
  • Computes and records taxes separately for each authority
  • Date specific tax tables computes rates based on date of sale
  • Product and service specific rates where applicable **
  • Compiles remittances for all collected taxes
  • Monthly, quarterly, yearly remittance scheduling by authority

See for yourself. Enter a location and and an amount and click submit. Your request will be processed on our iSeries using the same API that you can call from your sales and invoicing programs.

Location (City St)
Amount of purchase


In addition to sales tax, the tax calculator can be used to compute and report other consumer taxes such as food and beverage tax, lodging tax, rental tax, network access tax, fuel/alcohol/tobacco excise tax, etc. The multi-national support built into the tax calculator makes it possible to extend tax calculations and reporting anywhere in the world.

Click here for more technical information about the tax calculator.

           ____________________________________________ can help you with with the integration of the tax calculator into your systems. Programming services are available at our standard hourly rates. Phone support is free for licensed users with a current maintenance agreement.


Sales tax news and information:

Click Here to learn more about sales and use tax audits.
Click Here to learn more about Streamlined Salestax Initiative.
Click Here to learn more about the Marketplace Fairness Act.
Click Here to learn more about the SD v. Wafair court ruling.


** UNSPSC codes are used by the tax calculator to identify products and services for computing tax rates. For simplicity, your request will be processed as "taxable", default code 99999999.

UNSPSC is a coding system devloped by the United Nations Development Programme (UNDP) for use in international eCommerce applications. The tax calculator has a conversion table that allows you to cross reference your existing billing codes to UNSPSC codes.

Click here to lookup UNSPSC codes.