The files below contain data necessary to determine the proper Wisconsin taxes due on a particular transaction. They include:
- state, county, and city sales and use taxes,
- premier resort area taxes, and
- local exposition taxes
CAUTION: Premier Resort Area Tax (Publication 403) and Local Exposition Taxes (Publication 410) ONLY apply to certain sellers.
Wisconsin's rate and boundary files are updated monthly. However, retailers are only required to update their rate and boundary systems quarterly. See below for the last 4 months of files and their effective dates.
Instructions for Retailers:
You may use the department's sales tax rate lookup to determine the tax rates that may apply to a particular transaction. You do not need to program these files into your computer systems.
Instructions for Programmers:
These files meet the format and layout required by the Streamlined Sales Tax Governing Board (SSTGB), as explained in the
Technology Guide, Chapter 5. The current Wisconsin rate and boundary database files are also available on the
Streamlined Sales Tax Governing Board's website, however those files do not include premier resort area tax or local exposition tax rates.
The Wisconsin Rate and Boundary Files Guide, which include premier resort area taxes and local exposition district taxes, will aid in understanding the information in the database files for purposes of programming your computer systems to determine the taxes applicable to a specific street address or 9-digit zip code in Wisconsin.
