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Business Resources

Business support is available for all businesses in Sonoma County from the Economic Development Board. To get you started:

10 Steps to Opening a Business in Sonoma County

Business Assistance Guide & Hotline for Sonoma County

Business Licenses

The State of California does not require or issue business licenses for sole proprietorships or general partnerships. Other business structures, however, must register with the state. All businesses located in an incorporated city in Sonoma County must first obtain a business license from that city. The county does not require a business license to do business within its unincorporated areas.

The following resource can be of help.

  • Small Business Start-up Guide for Northern California by US Small Business Administration. State agencies, departments, and offices responsible for processing and monitoring state-mandated licensing requirements are included with addresses and phone numbers.
  • Association of Bay Area Governments: The Association of Bay Area Governments includes links to Sonoma County city governments for business licenses and permit information including: Cloverdale, Cotati, Healdsburg, Petaluma, Rohnert Park, Santa Rosa, Sebastopol, Sonoma, and Windsor.
  • SBDC (Small Biz Development Center) Napa-Sonoma has a consultant for ag.
  • SCORE: Free business advice for small businesses by retired business professionals.

Seller's Permit

Required for selling products in California from the State Board of Equalization. Register for a Sellers Permit online.

Hiring Employees

As your business grows, you may find that you need to hire your first employee. There are several steps you need to take before you bring on someone. For more information, check out this information provided by the U.S. Small Business Administration (SBA) or connect with a mentor from the Small Business Development Center (SBDC).

Fictitious business name

Register with the Sonoma County Clerk. Generally, this registration would apply if:

  • an individual is doing business under a name other than their own
  • the name suggests the existence of additional owners
  • the name does not include the surname of each general partner.

If you plan to operate a business under a name other than your own, a fictitious name statement is required in Sonoma County. Forms and information are online or call (707) 565-3700.

Tax ID Number

Businesses that hire employees need to obtain an Employer ID Number from the IRS, otherwise, use your individual TIN. Visit Small Business and Self-Employed Tax Center for more information.

Sales/Use Tax

California State Board of Equalization (BOE) regulates sales/use taxes, visit their site for the Tax Guide for the Agricultural Industry.

In some cases, purchases made by agricultural businesses are exempt from sales tax including:

  • Animals, Feed, and Related Supplies
  • Farm and Garden Supplies
  • Liquefied Petroleum Gas (LPG)
  • Farm Equipment and Machinery
  • Diesel Fuel Used in Farming or Food Processing   

 BOE resources