Food Truck Permit Requirements in Seattle, WA

Complete permit and license guide for starting a food truck in Seattle, King County, Washington.

Updated 2026-03-13 8 stops $700–$1,800 est. 4–8 weeks to complete all permits and inspections
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Not legal advice. Requirements may change — always verify with your local government authority before applying. This guide was compiled from public and official sources (last updated ) and has not yet been independently source-verified — confirm each requirement before acting on it.

Federal — start here

1 stop
  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC/corporation. Free from the IRS, obtained instantly online.

    Official government source

    FreeImmediate (online application)

State of Washington

3 stops
  1. Washington State Business License

    Required for all businesses operating in Washington State. Issued by the Department of Revenue (DOR) via the Business Licensing Service (BLS). Covers state B&O tax registration, sales tax account, and other state endorsements.

    Official government source

    $19/year (master license fee)1–2 weeks

  2. Food Worker Card

    All food workers in Washington State must obtain a Food Worker Card by completing an accredited food safety training course. Issued by the local health department and valid for 2 years.

    Official government source

    $10 per employeeSame day (online or in-person course)

  3. WA Dept of Agriculture Food Processor License

    Required if your food truck sells packaged or processed foods to the public. Issued by the Washington State Department of Agriculture. Not required if all food is prepared and sold directly from the truck without packaging.

    Official government source

    $85–$250/year depending on gross sales2–4 weeks

City of Seattle / King County

4 stops
  1. King County Public Health Mobile Food Unit Permit

    Required for all mobile food units operating in King County, including Seattle. Issued by Public Health — Seattle & King County based on food risk level (Category 1–4). Higher-risk operations (full cooking) require Category 3 or 4 permits at higher fee tiers.

    Official government source

    $400–$600/year depending on food risk category2–4 weeks after inspection

  2. Seattle Business License Tax Certificate

    Required for all businesses operating within Seattle city limits. Issued by the City of Seattle Finance and Administrative Services department. Must be renewed annually.

    Official government source

    $110/year1–2 weeks

  3. Commissary Agreement

    Mobile food units in Seattle/King County must operate from an approved commissary — a licensed commercial kitchen for food prep, storage, and cleaning. You must submit a signed commissary agreement with your health permit application.

    Official government source

    $300–$800/month (commissary rental, varies)Obtained before permit application

  4. Seattle Fire Department Inspection

    Required if your food truck uses propane, open flame cooking, or grease-producing equipment. The Seattle Fire Department inspects for fire suppression systems and safe fuel storage.

    Official government source

    No separate fee (included in permitting process)Scheduled concurrent with health inspection

Terminus

Open for business — est. $700–$1,800 · 4–8 weeks to complete all permits and inspections

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Official Sources

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