Accurate and Affordable Sales Tax Rates Databases and New Address Validation and Zip+4 Web Service

We are the leading provider of sales tax and use tax rates databases

Tax Data Systems is the leading provider of sales tax and use tax databases. Since 2003 we have tracked the tax rates of thousands of taxing jurisdictions throughout the country to provide you with the most accurate sales tax data available. We deliver our sales tax rates data in a variety of formats - either as a database or via our new address validation and zip+4 web service. We have the experience you expect, the accuracy you demand, world class customer support, and all for prices that make sense to your bottom line. Join the thousands of companies that rely on our data for their sales tax rates solution.

We offer many different versions of our databases to help ensure you receive the data that works best for your needs. The buttons to the left will let you read more about the products, download sample data, see file formats, or try our web service for free. If you need help deciding which version of the databases is right for you, please click on the buttons below to download a sales tax database product comparison pdf or to use our automated product selector tool.