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 • カリフォルニア州 (CA)

52 郵便番号 (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%.

州平均税率

9.19%

推定税額範囲: 8.75% - 10.25%

⚡ Direct Tax Answer & Key Takeaway

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

郡売上税

0.00%

州平均税率

9.19%

最高総合税率

10.25%

収録都市数

Cities & Towns in Contra Costa County

都市	総合売上税率	Action
Concord	9.75%	税率を見る →
Antioch	9.75%	税率を見る →
Richmond	9.75%	税率を見る →
San Ramon	9.75%	税率を見る →
Oakley	8.75%	税率を見る →
Danville	8.75%	税率を見る →
Pleasant Hill	9.25%	税率を見る →
Hercules	9.25%	税率を見る →
El Cerrito	10.25%	税率を見る →
Bay Point	8.75%	税率を見る →
Orinda	9.75%	税率を見る →
Pinole	10.25%	税率を見る →
Moraga	9.75%	税率を見る →
Discovery Bay	8.75%	税率を見る →
Alamo	8.75%	税率を見る →
Clayton	8.75%	税率を見る →
Rodeo	8.75%	税率を見る →
Kensington	8.75%	税率を見る →
San Miguel	8.75%	税率を見る →
North Richmond	8.75%	税率を見る →
Crockett	8.75%	税率を見る →
Reliez Valley	8.75%	税率を見る →
East Richmond Heights	8.75%	税率を見る →
Knightsen	8.75%	税率を見る →
Montalvin Manor	8.75%	税率を見る →
Bethel Island	8.75%	税率を見る →
Byron	8.75%	税率を見る →
Diablo	8.75%	税率を見る →
Castle Hill	8.75%	税率を見る →
Norris Canyon	8.75%	税率を見る →
Acalanes Ridge	8.75%	税率を見る →
Alhambra Valley	8.75%	税率を見る →
Shell Ridge	8.75%	税率を見る →
Clyde	8.75%	税率を見る →
Port Costa	8.75%	税率を見る →

📋 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) ↗

インタラクティブ売上税計算機

購入金額と郵便番号から、売上税額と税込合計支払額を瞬時に算出します。

番地別税率あり 2026年最新税率データ

購入金額 ($)

税込支払総額 Reverse Calculation

郵便番号 (ZIP)

州売上税:

総合売上税率:

州売上税 ()

郡売上税 ()

市売上税 ()

特別地区税 ()

税込支払総額

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 カリフォルニア州 state taxes and local municipal/district taxes, the overall sales tax rate varies between 8.75% and 10.25%.

In カリフォルニア州, grocery items are currently Exempt (0%). SaaS and digital automated goods are Non-Taxable (Custom & off-the-shelf cloud software is exempt).