Watch out for fake websites pretending to be SecureAccess Washington (SAW)! If you used a search engine to get to SAW, you might have clicked on ads that look real but actually lead to scams. Learn more.

Alert: My DOR will be offline from 5:00 pm on Friday, Dec. 15, to 12:00 p.m. on Monday, Dec. 18. for system maintenance.


Businesses must understand Washington's business tax system and general application of Business and Occupation (B&O) tax classifications, retail sales tax, and use tax to properly report tax. This publication is a guide to help those engaged in construction activities determine their state tax liability.

For more information or answers to any questions about Washington excise taxes, please contact us.

Download the free Tax Rate Lookup app to your mobile device.

Check out our Tax Topic article: Bidding on Construction Projects

Watch a construction industry video

Updated February 2023