Businesses operating within Sonoma city limits must annually file a business license as mandated by Sonoma Municipal Code 5.04. This requirement applies to individuals, partnerships, corporations, sole proprietors, subcontractors, independent contractors, non-profits, and home-based businesses. The issuance of a business license does not grant authorization to operate unless the business adheres to all federal, state, and local regulations.
The business license period for the City of Sonoma runs from January 1 to December 31 each year. All annual license fees are due on the first day of February. New businesses must pay the license tax before commencing operations. The City's Municipal Code establishes the business license tax as a flat rate, not based on gross receipts, with additional charges for most businesses calculated based on the number of employees.