A Message from the Treasurer-Tax Collector
The Treasurer-Tax Collector’s Office proudly serves the residents and taxpayers of San Joaquin County. Our mission is to ensure the safekeeping of public funds while maintaining liquidity and maximizing earnings in a conservative and prudent manner. We strive to provide the highest level of service in a professional, courteous, and efficient manner as we collect taxes and revenues critical to local government operations that benefit San Joaquin County and its citizens.
In an effort to better serve you, we welcome your comments and suggestions. Please e-mail us at tax@sjgov.org and thank you for visiting our website!
Phonxay Keokham, CPA
Treasurer-Tax Collector
San Joaquin County

Treasury
Tax
Revenue & Recovery

Public Auction
May 21-22, 2025
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Important Dates
10 Apr
Secured Taxes Second Installment Delinquent Date
April 10, 2025
07 May
Last Day to Timely File a Business Property Statement without Penalty
May 7, 2025
16 May
Filing period for Senior Citizens Tax Assistance
May 16, 2025
The filing period for Senior Citizens Tax Assistance is May 16 - August 31.