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Business licenses & tax certificates

Check the local authority, requirements, applications, renewal, changes and public license searches for your business.

Check or apply for a business license Renew a business license Close or update a business license Look up a business license Register a business for stormwater compliance

Before you start

Start with where your business is located and where it will operate. A county license may apply only to unincorporated areas or specific activities; cities can have their own requirements.
Some county offices provide guidance or referrals and do not issue a general business license. Read the entry before choosing an application.
A business license or tax certificate, an FBN/DBA filing, business entity registration and a professional license serve different purposes. Zoning, health and other activity permits may also apply. Business stormwater registration is a separate local programme where required.
Check the license period, renewal date and rules for changes in ownership or location. A renewal may not cover a move or a new owner. Fees and application steps depend on the license category.

1 guide with reviewed service links · Reviewed local guides · “City of Napa”

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County government · Napa

Recorder-County Clerk

Business license guidance

Business-license guidance and city authority referralsOfficial instructions

The County Clerk does not issue business licenses and refers readers to the local city or town. This does not prove that every other county department or unincorporated business is exempt.

Source checked October 16, 2026

Napa County — business name filing · Napa — fictitious business name instructions (opens in a new tab)

Reviewed business licensing instructions

Business licenses are not issued by the County Clerk Office. Please contact your local City/Town Hall:

Saved evidence: f6e9fd454a5015e7 · Agent source review

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