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Plumbing Contractor Permit Requirements in Kansas City, MO

Complete permit and license guide for starting a plumbing contractor in Kansas City, Jackson County, Missouri.

Verified 2026-08-19 5 stops $400–$1,200 est. 4–10 weeks to obtain all licenses
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Not legal advice. Requirements may change — always verify with your local government authority before applying. Key agencies and fees on this page were re-checked against official government sources on .

Federal — start here

1 stop

  1. EIN (Employer Identification Number)

    Required if you have employees or operate as an LLC or corporation. Free from the IRS.

    Official government source for EIN (Employer Identification Number) (opens in a new tab)

    FreeImmediate (online application)

State of Missouri

1 stop

  1. Missouri Department of Revenue — Sales Tax License

    Required for all businesses selling taxable goods in Missouri. The state rate is 4.225%; local rates vary by city and county. Register online with the Missouri Department of Revenue.

    Official government source for Missouri Department of Revenue — Sales Tax License (opens in a new tab)

    FreeImmediate (online application)

City of Kansas City / Jackson County

3 stops

  1. Missouri Plumbing Contractor License (local jurisdictions)

    Missouri has no statewide plumbing license; licensing is local. Kansas City requires master plumber licensure through KCMO City Planning & Development contractor licensing for plumbing businesses.

    Official government source for Missouri Plumbing Contractor License (local jurisdictions) (opens in a new tab)

    Per KCMO CPD fee schedule (unverified)2–6 weeks

  2. Kansas City City Clerk / Revenue Division — Business License

    Kansas City, MO requires every business operating in the city to register for a city business license with the Finance Department's Revenue Division (Business License Office, Form RD-100 / Quick Tax online). Renewed annually; since Jan 1, 2026 renewals also require business personal-property tax documentation if the business owns/leases tangible assets.

    Official government source for Kansas City City Clerk / Revenue Division — Business License (opens in a new tab)

    Fee is calculated from the business's gross receipts under KCMO Code Ch. 40 (varies by business category); no flat range - contact the Revenue Division (816-513-1120) or see the fee tables with Form RD-100.1–3 weeks

  3. Jackson County / Kansas City Plumbing Permit (per project)

    A separate permit must be pulled with the local building/plumbing department for each job. Inspections are required upon job completion.

    Official government source for Jackson County / Kansas City Plumbing Permit (per project) (opens in a new tab)

    Varies per CPD fee schedule (unverified)1–5 business days

Terminus

Open for business — est. $400–$1,200 · 4–10 weeks to obtain all licenses

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Official Sources

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