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County Administrator's Office

Sonoma County Cannabis Program

Cannabis Business Readiness Guide: 5. Tax Requirements

Sonoma County Cannabis Program

Businesses engaged in the cultivation or manufacturing of cannabis/cannabis products within the unincorporated areas of Sonoma County are required to pay county taxes.

Cannabis businesses are also likely to be subject to both federal and state taxes. Entrepreneurs are strongly advised to consult with a tax professional as they consider business activity, organizational structure and location. For reference, federal and state taxing agencies are described below.

State Taxes

The California State Board of Equalization (BOE)

If you own a business in California that sells medical cannabis and cannabis-related products, you must register with the California Board of Equalization for a seller's permit and regularly file sales and use tax returns. The BOE provides guidance to help you understand tax obligations specific to the cannabis industry. In addition BOE staff is available to meet with you at your business location to provide a personal consultation to help you correctly report and pay your sales and use taxes.

Federal Taxes

Internal Revenue Service

All for-profit ventures are subject to federal income taxes. Under Internal Revenue Code (IRC) Section 280E, the IRS does not allow businesses involved in “trafficking of controlled substances” to deduct ordinary and necessary business expenses, but does require the payment of federal income taxes. For more information please see memo 201504011 issued by the IRS Chief Counsel on 1/23/2015. 

  • Further federal tax information can be found by contacting the IRS at:
  • Internal Revenue Service
  • 777 Sonoma Avenue Santa Rosa, CA 95404 
  • Phone: (707) 523-0924
  • Website:

County Business Property Tax

  • Business property and some personal property is taxable.
  • Machinery, equipment, tools, furniture, fixtures, and leasehold improvements held or used in connection with a trade or business are taxable.
  • Supplies on hand, demonstration equipment, and construction in-progress are also assessable.
  • All costs before trade-in should be reported whether capitalized, expensed, or fully depreciated.
  • Inventory held for sale, application software and licensed vehicles are not taxable.

Unlike real property in California, business property and taxable personal property are appraised annually at full market value. Several types of property statements are used to assist the Assessor to determine the taxable value of business and personal property.

County Business Taxes

Measure A, the Sonoma County Cannabis Business Tax, passed on March 7, 2017, requires all businesses engaged in the commercial cannabis industry within the unincorporated areas of Sonoma County to pay taxes. Commercial cannabis taxes are calculated and paid each year based on quarterly periods: 

  • 1st Quarter: July 1 through September 30
  • 2nd Quarter: October 1 through December 31
  • 3rd Quarter: January 1 through March 31
  • 4th Quarter: April 1 through June 30

For more information, visit the Sonoma County Cannabis Program Cannabis Tax website

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