Alameda County Property Tax News & Announcements - 7/29/2026

This is a reminder that the 2026/27 Unsecured Property Tax is due by 5 p.m. on Monday, August 31, 2026. 

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, 2026, an additional 1.5% interest will accrue on the first of each month, starting November 1, 2026 (RTC 2922).

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. 

We encourage everyone to pay the property taxes safely using the following non-contact options:

• Mail Early! Mail in your check on or before August 31, 2026. Penalty is charged on all late postmarks. As a reminder we only honor US Post Office postmarks or shipment date of the independent delivery service that is an Internal Revenue Service designated delivery service only as receipt date. Your cancelled check is your receipt. 
  • DO NOT SEND CASH PAYMENTS. Please use a personal check or obtain a cashier's check or money order.
  • Please note: Our mailing address has changed. We are using a lockbox service for faster deposit of your account. You should use the envelope 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. 
  • Lost, missing, or late-postmarked payments will be subject to penalties. For your protection, we strongly recommend obtaining proof of mailing from the post office. 
  • IMPORTANT NOTICE REGARDING YOUR MAILED IN PAYMENT:
    • The United States Postal Service has changed its regulations regarding postmarked dates as of December 24, 2025. The postmark date will be the date the item is first processed by its automated processing equipment not the date it is picked up from the mailbox. You must make sure to submit your payment well before the deadline or you must walk into your local post office and request a manual postmark date to be added onto your payment envelope. You can avoid all this by simply paying online. We strongly encourage you to use this option as we will honor the new postmark date as receipt date. 
• 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.  You can also pay by Credit Card, PayPal or Google Pay with a transaction fee - Tax Payment Web Page
  • Please be advised that all PayPal payments are considered final upon submission. Our office does not have capability to cancel or void a PayPal transaction once it has been submitted. 
• Pay on the phone with a credit card (a small transaction fee) 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 a day, 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 August 31. 2026 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.
  • Please be advised that personal online banking bill-pay services typically use postage that does not receive a USPS postmark. Because of this, your payment must be received in our office by 5:00 p.m. on the delinquency due date to avoid penalties. We strongly recommend scheduling payments early to prevent any late fees. 
• You can also wire your payment electronically - Wire Transfer Instructions 
• 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

DUE TO SECURITY PROTOCOLS, ONLINE PAYMENTS MAY NOT BE AVAILABLE IF YOU ARE ATTEMPTING TO PAY FROM OUTSIDE OF THE UNITED STATES. HOWEVER, YOU HAVE SEVERAL ALTERNATIVE OPTIONS: 

• Phone Payment (IVR): You may pay by credit card using our automated system by calling +1(510)272-6800. This service is available 24 hours a day, 7 days a week.
• Mail or Wire Transfer:  Payments can also be submitted via mail or wire transfer. If you are wiring your payment, we will honor the date the payment reaches our bank so make sure you wire your payment early. 
  
  • If you choose to mail your payment, ensure it is sent enough to meet the deadline. We honor only the USPS postmark date or shipment date of the independent delivery service that is an Internal Revenue Service designated delivery service as the official receipt date - not the date it was mailed from the foreign country.

 

 

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. 

 

 

 

• Wiring Instruction US BANK.pdf
• IRS Approved Private Couriers List.pdf