The delinquent date for 1st Installment Secured Property Taxes is December 10. Payments received after this date will be considered late and a 10% penalty will apply. We honor USPS postmarks for mail-in payments.
Please be advised: due to the high volume of online users, the website and automated phone system may experience delays. The USPS postmark will be honored for mail-in payments. An exterior drop box is available at main street entrance of finance building, 625 Court Street, Martinez, during business hours.
To ensure public safety during COVID-19, the Contra Costa County Tax Collector’s Office is open by appointment only. Please call (925) 957-5280 or email email@example.com to schedule an appointment, available between 9:00 AM and 4:00 PM, Monday through Friday, except holidays.
The Tax Collector's Office has a COVID-19 Entry and Symptom Screening protocol. See Press Release.
To save time and avoid long lines, taxpayers should either mail in their payment or go online to pay their taxes.
To mail in payment, please use the return window envelopes provided with the tax bill. Include the installment coupon(s) with the payment. Please note, we honor only the USPS cancellation postmark as the receipt date.
To pay online, go to www.cctax.us and select Pay Online. Search the tax account by either the property’s APN (Assessor’s Parcel Number) or by its situs address, then verify that the resulting address found is correct. Select to pay immediately or schedule a payment for a later date. Payment can be made either by credit or debit card or by electronic check (e-check). A fee will be assessed for card transactions by the third-party payment processor. There is no fee for e-check transactions. Upon completion of the payment, an email confirmation will be sent.
DROP OFF CHECK PAYMENTS
The Treasurer-Tax Collector's Office has installed an exterior drop box in front of the County Finance Building, 625 Court Street, Martinez. The drop box is available from Monday to Friday, 8 am to 5 pm, for CHECK payments only. NO CASH ALLOWED. The drop box is emptied frequently during the day.
To pay by phone, dial (925) 957-5280 and follow the prompts. Have the Secured tax bill on hand for APN information as well as the credit or debit card or checkbook. Payment can be made either by credit or debit card or by electronic check (e-check). A fee will be assessed on card transactions by the third-party payment processor. There is no fee for e-check transactions. Upon completion of the payment, a confirmation number will be given.
CALL CENTER HOURS
To speak to a representative of the Tax Collector’s Office, please dial (925) 957-5280 and follow the prompts. Calls are taken between 9:00 AM and 4:00 PM, Monday through Friday, except holidays. We anticipate a higher volume of calls this year due to the pandemic. We appreciate your patience while waiting for your call to be answered.