Contra Costa County Business License

General Information
A Business License is an annual tax you pay each calendar year for doing business within the unincorporated area of the County of Contra Costa.

The County Ordinance requires that you obtain a license for conducting business within the unincorporated area, even if your business is located outside our limits or you have a business license from another city.

Conducting business in the unincorporated area of the County of Contra Costa without a license can result in penalties, notice of violations, and court action.

It is important to know that most California cities and counties have a business license tax ordinance. However, each city has its own tax rate, structure, and requirements. Check with the appropriate city or county for their requirements.

Please visit the Treasurer-Tax Collector's Website for more information regarding Business Licenses.