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  1. Welcome to the Tax Portal


    We've collated all the information you need regarding Contra Costa taxes. Peruse rates information, view relief programs, make a payment, or contact one of our offices.
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  1. Tax Calendar

May 2022

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  1. Mon, May 30

    Closed for Memorial Day
    Read More

  2. Wed, Jun 1 - Sun, Jul 31

    Business License Renewal Due Business licenses renewal is due June 30 and delin...
    Read More

  3. Mon, Jul 4

    Closed for Independence Day Office Closed for Holiday
    Read More
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  1. Tax News
  1. FAQ3

    Frequently Asked Questions

    Have a question about property taxes in Contra Costa County? You are not alone. Hopefully, we have the answer you are looking for. Read more...
  2. Senior Group

    Tax Assistance for Seniors

    Depending on age and sometimes income, Seniors may qualify for certain tax assistance. Read more...
  3. Important Dates5

    Important Tax Dates

    The following schedule is intended to serve as a general guide to property owners in Contra Costa County, California. Read more...
  4. CA Property Tax Assistance for Pandemic Hardships Button English

    Coming Soon: NEW California Property Tax Assistance

    If you have faced a pandemic-related financial hardship, you may be eligible for help to catch up on your past-due property tax payments. Funds received never have to be paid back, and there is no cost to apply. Check eligibility at CAMortgageRelief.org. Read more...
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  1. The Seal of Contra costa County California
  1. Contact Us:   Public Information Contacts  Contact Webmaster

    Government Center:       1025 Escobar Street, Martinez, CA 94553
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