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My DOR and other online services will be down for maintenance from 5 p.m. PST Friday, January 17, 2025, to 8 a.m. PST Tuesday, January 21, 2025.
Education
Industry guides
To help you better understand the tax obligations for specific industries, we've created online guides.
Events & workshops
Whether you’re a new business or you’ve been around for a while, check out our tax basics workshops.
Watch a video
Can’t attend a workshop in person? Watch one of our online workshops or tutorials.
Audits
The Department of Revenue routinely audits businesses to determine whether state excise taxes were reported and paid correctly. Learn more about the audit process and how to prepare for an audit.
