Updated: February 1, 2023
Property tax payment deadlines can be confusing in Silicon Valley. There’s a due date. Then there’s a delinquent date. When are they really due? You’re supposed to make your payment before the due date. However, they don’t assess a penalty unless your payment arrives after the delinquent date. To help you stay ahead of the late penalties, here’s a summary for you for Santa Clara and San Mateo Counties.
Santa Clara County Deadlines
October – Secured Annual Tax Bills are mailed out to addresses of record.
November 1 – First Installment is due.
December 10 – First Installment becomes delinquent after 5:00PM.
February 1 – Second Installment is due.
April 10 – Second Installment becomes delinquent after 5:00PM.
San Mateo County Deadlines
October – Treasurer-Tax Collector mails out original secured property tax bills.
November 1 – First installment of secured taxes is due and payable.
December 10 – First installment of secured taxes payment deadline. A 10% penalty is added as of 5:00 p.m. (*)
February 1 – Second installment of secured taxes due and payable.
April 10 – Second installment of secured taxes payment deadline. A 10% penalty plus $40.00 cost is added as of 5:00 p.m. (*)
(*) If a delinquent date falls on a weekend or holiday, the delinquent date is the next business day.
For more details
Here are the links to the Tax Collectors’ websites. Also, if find yourself on the verge of missing a deadline, you can look up and pay your property tax online.
Santa Clara County: https://www.sccgov.org/sites/dtac/tax/Pages/tax.aspx
San Mateo County: https://www.sanmateocountytaxcollector.org/