The download data is a resource for you to integrate into your own customized applications. The files are in comma-separated (.txt) format, in zip files.
The rates are updated quarterly. Please check our website 30 days prior to the first day of the quarter, to download the latest sales tax rates.
Washington State Sales Tax Library
These files are zipped. They will need to be unzipped to extract the data.
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)
Quarter 4 (Oct 1 - Dec 31)
Quarter 3 (July 1 - Sept 30)
Quarter 2 (Apr 1 - Jun 30)
Quarter 1 (Jan 1 - Mar 31)