When are unsecured property taxes due?

Most unsecured bills are mailed before July 31st.  These bills must be paid on or before August 31st.  If the due date falls on a Saturday, Sunday or a legal holiday, the deadline is extended until the next business day.

If the bill is mailed after July 31st, the delinquent date is extended to the end of the month following the bill’s issuance. For example, if your bill were mailed in September, the delinquent date would be October 31st. If your payment is not received or postmarked by the delinquent date, a 10% penalty and a $30.00 collection fee are added to your bill.

If your bill remains unpaid for two additional months, a monthly penalty of 1.5% begins to accrue (an 18% per annum rate). In addition, if a Certificate of Tax Lien is recorded, an additional fee of $20.00 will be required to release the lien.

Generally, an annual unsecured tax bill is mailed out by June 30th each year. If you do not receive a tax bill by July 10th, contact the Treasurer-Tax Collector’s office immediately. Call (925) 608-9500.


NOTE: The penalty of 10% shown on the stub of your bill is not applied until the delinquency date. Do not include the penalty if payment is made on or before that date.

Show All Answers

1. What is an unsecured property tax?
2. What type of property is assessed as an unsecured personal property tax bill?
3. When is the Unsecured Tax assessed?
4. What is the lien date?
5. What if I no longer own the property?
6. How are Unsecured Tax Amounts determined?
7. What period of time does an Unsecured tax bill cover?
8. What is the fiscal year?
9. How are Unsecured taxes issued?
10. When should I expect my Unsecured tax bill?
11. What should I do if I don't receive a tax bill?
12. When are unsecured property taxes due?
13. What if I don't pay my tax bill prior to delinquency?
14. What happens after I pay a delinquency, on which a lien has been placed?
15. Where do I mail my tax payment?
16. Can payments be postmarked on the deadline?
17. Is a private postage meter date the same as the United States Postal Service postmark?
18. May taxes be paid with a credit or debit card?
19. If I sell my Unsecured property before the fiscal year, am I still responsible for the Unsecured taxes?
20. What if I disagree with the tax bill?
21. Do I need to pay the tax bill while appealing or talking with the Assessor about a reduction in the value assessed?
22. What if my check is dishonored by the bank?
23. What is Unsecured Tax Four Plan?
24. If I don't pay my Unsecured tax bill, is there any action the Tax Collector can take?