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The City of Portland, Oregon

Office of Management & Finance

Trusted partner, creating smart solutions for the City and our community.

main: 503-823-5288

Revenue: 503-823-5157

1120 SW 5th Ave, Room 901, Portland, OR 97204

More Contact Info

Registration Requirements

New businesses are required to register with the City of Portland and Multnomah County (PDF form or online). Existing businesses changing their tax entity, and sole proprietors/single-member LLCs reopening their business should re-register and provide their business tax account number.


Am I doing business?

Strategies to determine if you need to register your business

Isn't this just a double tax?

No. Portland and Multnomah County have separate responsibilities and separate taxes

Online Business Registration

Register with Portland and/or Multnomah County online

Business Registration Form

Register with Portland and/or Multnomah County

Register with the State of Oregon

Business registration, business searches, etc., with the State of Oregon