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Billing & Payments
Look Up Tax Bill
Utilize our online payment portal for your taxes.
Pay by Mail
Discover how to pay by mail. Partial payments are not acceptable. Payments must be for the full amount on the stub.
Pay by Phone
Find out how to how to pay your taxes by phone.
Pay in Person
You can always come to our office and pay taxes in person. The business hours for in-person visits and payments are from 8:00 am to 5:00 pm weekdays.
Pay by Wire Transfer
If you plan to make an aggregate payment of fifty thousand dollars or more on the two most recent installments of secured taxes or on the one installment of the most recent unsecured tax, you are required to make your payment to Contra Costa County via Electronic Funds Transfer.
Read about convenience fees. We pass the credit card company convenience fee along to the consumer by raising prices on the goods and services purchased in order to cover the additional cost that is incurred from the credit card company.
Tax Payment FAQ
Find answers to the most commonly asked questions regarding tax payments.
Military Tax Penalty Relief
Administered by the Federal Government of the United States of America, military personnel on active duty are eligible to defer the payment of their taxes under the provisions of the Service Members' Civil Relief Act.
Services for Seniors
Peruse options available to senior citizens of Contra Costa County regarding taxes.
Explore the option of an installment plan for escaped assessments or delinquent secured and unsecured taxes.
The tax rate consists of the 1% general tax plus any general obligation bond tax rates. These rates may change each fiscal year depending on the debt service requirements and assessed valuations of the districts.
Refunds are usually the result of a reduction in assessed value by the Assessor's Office. The calculation is the reduction in assessed value multiplied by the tax rate for the applicable fiscal year.