Alameda County Property Tax News & Announcements - 8/18/25

This is a reminder that the 2025/26 Unsecured Property Tax is due on Tuesday, September 2, 2025, because August 31, 2025 falls on a Sunday and September 1, 2025 is a legal holiday (RTC 2922). 

If not paid by this date, the tax will include a delinquent penalty of 10% and a delinquent cost of $50.00. If not paid by October 31, 2025, an additional 1.5% interest will accrue on the first of each month, starting November 1, 2025.

You can get information about your property tax including payment status, submitting a payment by eCheck or credit card or get answers to Frequently Asked Questions at the Alameda County Tax Collector's Web Page or by phone at (510) 272-6800. Please note the payment information on our website is the same information from our agents. 

Mail Early! Penalty is charged on all late postmarks. As a reminder we honor US Post Office postmarks only as receipt date. We encourage everyone to pay the property taxes safely using the following non-contact options:

• Mail in your check, postmarked by the United States Postal Services (USPS) on or before September 2, 2025
• PLEASE NOTE: OUR MAILING ADDRESS HAS CHANGED. WE ARE USING A LOCK BOX SERVICE FOR FASTER DEPOSIT OF YOUR ACCOUNT. YOU SHOULD USE THE ENVELOPES PROVIDED WITH PO BOX 45869 SAN FRANCISCO, CA 94145-0869. WE ARE STILL LOCATED AT 1221 OAK STREET, ROOM 131, OAKLAND, CA 94612 SHOULD YOU OPT TO BRING IN YOUR PAYMENT IN PERSON.
• Pay online either by eCheck (free of charge) where you will receive an acknowledgement of the transaction pending your bank institutions acceptance. We will confirm your bank routing number, but we cannot confirm your account number. Per the terms and conditions please check with your financial institution within three business days to confirm the transfer of funds. Pay with a credit card with a small convenience fee of 2.3% - Tax Payment Web Page
• Pay on the phone with a credit card (small convenience fee of 2.3%) using the automated system at (510) 272-6800 by selecting option 1 after the greeting and following the prompts. You must use your unsecured account number when making a payment.
• An agent will not assist you with your payment over the phone. For your convenience the system is available 24 hours 7 days a week so please ask someone you trust for assistance with this transaction if needed. 
• Pay through your bank's Bill-Pay service. This must be done well before September 2, 2025 to allow your bank's processing system enough time to process your request and mail the payment to our office; use your unsecured account number to identify your property tax bill.
• DO NOT SEND CASH PAYMENTS. Please use a personal check or obtain a cashier's check or money order and mail immediately.
• You can also wire your payment electronically - Wire Transfer Instructions 
• Use the drop box at the entrance of the building at 1221 Oak St, Oakland CA 94612 which is available to the public Monday to Friday from 8:30 A.M. to 4:30 P.M. excluding County holidays. DO NOT DROP OFF CASH PAYMENTS
• Use the mail slot at our Hayward Business License office located at 224 W. Winton Ave, Room 169, Hayward CA 94544 Monday to Friday from 8:30 A.M to 5:00 P.M. excluding County holidays. DO NOT DROP OFF CASH PAYMENTS

PLEASE NOTE: PAYPAL IS NOT AN AUTHORIZED PAYMENT METHOD AND WILL DELAY YOUR PAYMENT AND MAY RESULT IN LATE FEES.

Your cancelled check is your receipt. 

Please Note: You are receiving this notification because you signed up for email reminders. If you have already paid your unsecured property tax bill and still received this notice, you can safely disregard this notice. If you prefer to not get this email, please click on 'Manage Preferences' below.