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    Contra Costa County, California

    Contra Costa County
    tax calculators for 2026.

    Estimate property and sales tax in Contra Costa County. The county has an average effective property tax rate of 0.88% and a typical combined sales tax of 8.75%.

    Contra Costa County Property Tax

    Estimate annual property tax in Contra Costa County from your home's value.

    Contra Costa County Sales Tax

    Add the Contra Costa County combined sales tax (8.75%) to any purchase.

    Taxes in Contra Costa County

    Contra Costa County sits in California, so residents pay California state taxes plus county and city rates. Property tax averages 0.88% of home value, and the combined sales tax is around 8.75%.

    For a complete picture, pair these with the California state tax calculators. These tools are estimates — verify exact figures with the Contra Costa County Assessor (contracosta.ca.gov).

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