What is the sales tax rate in Contra Costa County, CA?

The average sales tax rate in Contra Costa County (CA) is 9.19%, with jurisdictions ranging between 8.75% and 10.25%.

Contra Costa County • California (CA)

52 Codice Postale (ZIP)

Contra Costa County, CA Sales Tax Rates 2026

2026 sales tax rate guide for Contra Costa County, CA. Average combined tax rate is 9.19% with local jurisdictions ranging up to 10.25%.

Aliquota Media Combinata

9.19%

Intervallo Imposta Stimato: 8.75% - 10.25%

⚡ Direct Tax Answer & Key Takeaway

As of 2026, the local county sales tax rate in Contra Costa County (California) is 0.00%. Combined sales tax rates across cities in this county range from 8.75% to 10.25% (averaging 9.19%).

Imposta di Contea

0.00%

Aliquota Media Combinata

9.19%

Aliquota Locale Massima

10.25%

Città Censite

Cities & Towns in Contra Costa County

Città	Aliquota Combinata	Action
Concord	9.75%	Visualizza Aliquote →
Antioch	9.75%	Visualizza Aliquote →
Richmond	9.75%	Visualizza Aliquote →
San Ramon	9.75%	Visualizza Aliquote →
Oakley	8.75%	Visualizza Aliquote →
Danville	8.75%	Visualizza Aliquote →
Pleasant Hill	9.25%	Visualizza Aliquote →
Hercules	9.25%	Visualizza Aliquote →
El Cerrito	10.25%	Visualizza Aliquote →
Bay Point	8.75%	Visualizza Aliquote →
Orinda	9.75%	Visualizza Aliquote →
Pinole	10.25%	Visualizza Aliquote →
Moraga	9.75%	Visualizza Aliquote →
Discovery Bay	8.75%	Visualizza Aliquote →
Alamo	8.75%	Visualizza Aliquote →
Clayton	8.75%	Visualizza Aliquote →
Rodeo	8.75%	Visualizza Aliquote →
Kensington	8.75%	Visualizza Aliquote →
San Miguel	8.75%	Visualizza Aliquote →
North Richmond	8.75%	Visualizza Aliquote →
Crockett	8.75%	Visualizza Aliquote →
Reliez Valley	8.75%	Visualizza Aliquote →
East Richmond Heights	8.75%	Visualizza Aliquote →
Knightsen	8.75%	Visualizza Aliquote →
Montalvin Manor	8.75%	Visualizza Aliquote →
Bethel Island	8.75%	Visualizza Aliquote →
Byron	8.75%	Visualizza Aliquote →
Diablo	8.75%	Visualizza Aliquote →
Castle Hill	8.75%	Visualizza Aliquote →
Norris Canyon	8.75%	Visualizza Aliquote →
Acalanes Ridge	8.75%	Visualizza Aliquote →
Alhambra Valley	8.75%	Visualizza Aliquote →
Shell Ridge	8.75%	Visualizza Aliquote →
Clyde	8.75%	Visualizza Aliquote →
Port Costa	8.75%	Visualizza Aliquote →

📋 State Tax Rules & Compliance Guide

Sourcing Rule: Hybrid (Origin for city/county, Destination for district taxes)

Groceries & Food: Exempt (0%)

Clothing & Apparel: Taxable (standard rates)

SaaS & Digital Goods: Non-Taxable (Custom & off-the-shelf cloud software is exempt)

Economic Nexus Threshold: $500,000 in cumulative California sales

Official Tax Authority: California Department of Tax and Fee Administration (CDTFA) ↗

Calcolatore Interattivo Sales Tax

Calcola all'istante l'imposta sulle vendite esatta e il prezzo totale di acquisto.

Aliquote per Indirizzo Aliquote aggiornate al 2026

Importo Acquisto ($)

Prezzo Totale Acquisto Reverse Calculation

Codice Postale (ZIP)

Imposta Statale:

Aliquota Combinata:

Imposta Statale ()

Imposta di Contea ()

Imposta Comunale ()

Distretto Speciale ()

Prezzo Totale Acquisto

ZIP Codes in Contra Costa County

94505 8.75% 94506 8.75% 94507 8.75% 94509 9.75% 94511 8.75% 94513 8.75% 94514 8.75% 94517 8.75% 94518 9.75% 94519 9.75% 94520 8.75% 94521 9.75% 94522 9.75% 94523 9.25% 94524 9.75% 94525 8.75% 94526 8.75% 94527 9.75% 94528 8.75% 94529 8.75% 94530 10.25% 94531 9.75% 94547 9.25% 94548 8.75% 94549 8.75% 94553 8.75% 94556 9.75% 94561 8.75% 94563 9.75% 94564 10.25% 94565 8.75% 94569 8.75% 94570 9.75% 94572 8.75% 94575 9.75% 94582 9.75% 94583 8.75% 94595 8.75% 94596 8.75% 94597 8.75% 94598 8.75% 94707 8.75% 94708 8.75% 94801 8.75% 94802 9.75% 94803 9.75% 94804 9.75% 94805 8.75% 94806 8.75% 94807 9.75% 94808 9.75% 94850 9.75%

❓ Frequently Asked Questions

Key questions and answers regarding sales tax rates, exemptions, and compliance.

The county tax rate for Contra Costa County is 0.00%. When combined with California state taxes and local municipal/district taxes, the overall sales tax rate varies between 8.75% and 10.25%.

In California, grocery items are currently Exempt (0%). SaaS and digital automated goods are Non-Taxable (Custom & off-the-shelf cloud software is exempt).