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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 · Colusa

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County government · Colusa

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Business licensing

County business-license requirements and application resourcesOfficial instructions

Check Chapter 10 for businesses requiring a county license outside incorporated city limits. The county provides standard, temporary and transfer application resources.

Service area: Businesses licensed under Colusa County Code Chapter 10 outside incorporated city limits. Area details & sources

Source checked October 16, 2026

Colusa County official website · Colusa County — business licensing discovery (opens in a new tab)

Reviewed business licensing instructions

It shall be unlawful for any person to maintain, conduct, carry on, or commence to maintain, conduct or carry on within the county, and outside the limits of any incorporated city thereof, any business for which a license is required by Colusa County Code Chapter 10, without first having obtained a license to do so as provided in Chapter 10.

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