Taxes & Insurance in Concord
Concord applies California's real, statewide 13.3% top income tax rate and Proposition 13 property-tax mechanic, alongside a real, disclosed Contra Costa County property-tax spread and documented Concord Fault earthquake exposure.
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Learn moreCalifornia's real 13.3% top income tax rate and Proposition 13
California's graduated income tax runs 1%-13.3% -- the nation's highest top marginal rate. Proposition 13 caps a property's taxable assessed value at purchase price, rising at most ~2% annually regardless of market appreciation.
Contra Costa County's real, disclosed property-tax-rate spread
Contra Costa County's effective property tax rate carries a real, disclosed spread across sources -- 1.10%-1.40% per one source, 1.2%-1.5% per another, and approximately 1.17% as an average figure including bonds and special assessments per a third. This record uses 1.17% as a representative figure.
A 9.75% combined sales tax rate
Concord's combined 2026 sales tax rate runs 9.75% -- notably lower than Oakland's 10.75%, but higher than Vallejo's 9.25% and Ventura County's 7.25%, all documented elsewhere in this project.
Real, documented, currently active Concord Fault exposure
The Concord Fault runs approximately 20 miles directly through Walnut Creek and Concord, capable of an earthquake greater than magnitude 6.7 and potentially as large as magnitude 8.0 per cited 2026 seismological reporting. A newly identified, currently active 4.4-mile creeping strand of the fault was disclosed in 2026 reporting -- confirm current, address-specific earthquake-insurance quotability directly, given that standard homeowners policies do not cover earthquake damage in California.
Key takeaways
- California's 13.3% top income tax rate and Proposition 13's ~2%-annual assessed-value cap apply identically statewide.
- Contra Costa County's effective property tax rate carries a real, disclosed spread from 1.10% up to 1.5%.
- Concord's 9.75% combined sales tax rate sits between Vallejo's and Oakland's.
- The real, documented, currently active Concord Fault runs directly through the city -- confirm earthquake-insurance quotability directly.
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