What is the sales tax rate in Martinez, California?

The combined sales tax rate in Martinez, California is 11.100% as of 2026. This includes the California state rate of 7.300% plus local jurisdiction taxes.

How is the Martinez sales tax calculated?

Multiply your purchase amount by 11.100% (or 0.01110) to get the tax owed. For example, a $100 purchase incurs $11.10 in sales tax.

What is the California state sales tax rate?

The base California state sales tax rate is 7.300%. Local jurisdictions may add additional taxes on top of this rate.

Does Martinez have a county sales tax?

Martinez imposes an additional county-level sales tax of 0.300% on top of the state rate.

When was the Martinez sales tax rate last updated?

The Martinez sales tax rate was last verified on March 27, 2026. We cross-reference all rates against the official State Department of Revenue data.

Live Data: April 2026

Martinez, CA Sales Tax Rate 2026

The combined sales tax rate in Martinez, California is 11.100%.

Combined Rate 11.100%

State7.300% County0.300% City1.000%

Martinez Sales Tax Breakdown

Jurisdiction	Rate
California State Sales Tax	7.300%
County Sales Tax	0.300%
City / Municipal Tax	1.000%
Special District Tax	2.500%
Total Combined Rate	11.100%

Which County Is Martinez In?

Martinez falls within Contra Costa, California. Contra Costa imposes a 0.300% county-level sales tax in addition to the California state base rate.

Martinez ZIP Codes

The following ZIP codes are mapped to Martinez for sales tax purposes. All listed codes apply the 11.100% combined rate.

94553

Nearby Tax Rates

Pleasant Hill 3.8 mi

11.100%

Combined Rate

View Local Rates

Business Nexus in California

Economic Nexus Threshold

Selling into California from out of state? Once you exceed $500,000 in annual sales or 0 transactions, you must register and collect California sales tax.

FAQ: Martinez Sales Tax

The combined sales tax rate in Martinez, California is 11.100% as of 2026.

Multiply your purchase price by 11.100% to find the tax owed. A $500 purchase would include $55.50 in sales tax.

Groceries are generally taxable in California. Check the official Department of Revenue for specific exemptions.

Vehicle purchases in Martinez are subject to the 11.100% combined rate, though some states apply different rules for vehicle sales. Verify with the California Department of Revenue or DMV.

Register for a sales tax permit through the official California Department of Revenue website. Registration is typically free and required before collecting any sales tax.

Sales Tax Calculator

Using 11.100% rate for Martinez, CA

Purchase Amount ($)

Tax Amount $0.00

Total with Tax $100.00

Rate applied: 11.100% combined

Official Tax Authority

California Department of Tax and Fee Administration

Filing Deadline: Returns due the last day of the month following the reporting period. File via CDTFA Online Services.

Visit Official Portal (800) 400-7115