Treasurer-Tax Collector
Official Contra Costa County property-tax bill or payment portal. Follow the county’s instructions for your bill type and review the amount and any payment charges before paying.
- Availability · Internet auction registration and payment
- The county requires preregistration, a refundable $5,000 deposit and a $35 nonrefundable registration fee; auction settlement accepts wire transfer only.
Source & saved evidence
Property-tax local instructions: Internet auction registration and payment; saved text paragraph 20
Only bids submitted via the internet will be accepted and pre-registration is required. Register on-line at GovEase.com. Bidders must submit a refundable deposit of $ 5,000.00 electronically GovEase.com and a $35 non-refundable registration fee. The $5,000 deposit will be applied to the successful bidder’s purchase price and deed information indicating how title should be vested is required. Only payment by wire transfer will be accepted. A California transfer tax will be added to and collected with the purchase price and is calculated at $.55 per each $500 or fraction thereof. For properties located within the city limits of Richmond an additional City of Richmond transfer tax will be added to and collected with the purchase price and is calculated at $7.00 per each $1,000 or fraction thereof. For properties located within the city limits of El Cerrito an additional City of El Cerrito transfer tax will be added to and collected with the purchase price and calculated at $12.00 per each $1,000 or fraction thereof.
Agent source review: October 26, 2026 · Snapshot
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Before you start · 7 requirements & conditions
- Deadlines · Shared California BOE calendar: regular secured-roll taxes; local bills and payment channels remain separate
- Secured-roll first installment is due November 1; the delinquency date is separate.
Source & saved evidence
California State Board of Equalization · California property tax calendar (opens in a new tab)
BOE calendar: property owners, secured-roll first-due
§ 2605 Rev. & Tax. Code November 1 Property owners First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
Agent source review: October 26, 2026 · Snapshot
b5e3be710f5a4327 - Deadlines · Shared California BOE calendar: regular secured-roll taxes; local bills and payment channels remain separate
- Secured-roll second installment is due February 1; the delinquency date is separate.
Source & saved evidence
California State Board of Equalization · California property tax calendar (opens in a new tab)
BOE calendar: property owners, secured-roll second-due
§ 2606 Rev. & Tax. Code February 1 Property owners Second installment real property taxes due and payable.
Agent source review: October 26, 2026 · Snapshot
b5e3be710f5a4327 - Deadlines · Shared California BOE calendar: regular secured-roll taxes; local bills and payment channels remain separate
- BOE’s regular first-installment delinquency date is December 10 at 5 p.m. or close of business, whichever is later. Read the holiday rule and your actual bill.
Source & saved evidence
California State Board of Equalization · California property tax calendar (opens in a new tab)
BOE calendar: property owners, secured-roll first-delinquent
§§ 2617 and 2704 Rev. & Tax. Code December 10 Property owners First installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m. or close of business day, whichever is later.
Agent source review: October 26, 2026 · Snapshot
b5e3be710f5a4327 - Deadlines · Shared California BOE calendar: regular secured-roll taxes; local bills and payment channels remain separate
- BOE’s regular second-installment delinquency date is April 10 at 5 p.m. or close of business, whichever is later. Read the holiday rule and your actual bill.
Source & saved evidence
California State Board of Equalization · California property tax calendar (opens in a new tab)
BOE calendar: property owners, secured-roll second-delinquent
§§ 2618 and 2705 Rev. & Tax. Code April 10 Property owners Second installment of taxes on the secured roll, if unpaid, is delinquent at 5:00 p.m., or close of business day, whichever is later.
Agent source review: October 26, 2026 · Snapshot
b5e3be710f5a4327 - Deadlines · Shared California BOE calendar: regular secured-roll taxes; local bills and payment channels remain separate
- BOE notes that a specified date falling on Saturday, Sunday or a legal holiday generally moves to the next business day. Check the county’s notice and payment-channel cutoff.
Source & saved evidence
California State Board of Equalization · California property tax calendar (opens in a new tab)
BOE calendar Notes: weekend/legal-holiday rule
In practically all cases, the action may be done before the specified date. If the specified date falls on Saturday, Sunday, or a legal holiday, the action may be done on the next business day. (Government Code §§ 6706, 6707)
Agent source review: October 26, 2026 · Snapshot
b5e3be710f5a4327 - Payments · Checks and online e-check
- Checks must be issued by U.S. banks; online e-check has no additional fee.
Source & saved evidence
Property-tax local instructions: Checks and online e-check; saved text paragraph 36
Checks issued by U.S. banks. E-Checks will be accepted online with no additional fees.
Agent source review: October 26, 2026 · Snapshot
6bf7b690ef4bec1c - Payments · Payment portal processor fees
- The portal lists 2.50% (minimum $3.50) for PayPal/cards and no e-check service fee. A rejected e-check can incur a returned-check fee up to $85.
Source & saved evidence
Property-tax local instructions: Payment portal processor fees; saved text paragraph 10
In addition to the TOTAL amount of taxes selected for payment, a Service Fee may be assessed depending on the type of payment selected: e-check, PayPal, credit card or debit card. The service fee for PayPal, credit and debit card based payments is 2.50% of the transaction amount with a minimum charge of $3.50. There is no Service Fee for payments made via E-check; however, E-checks processed and rejected for any reason will be subject to the County standard returned check fee of up to $85. By consenting with the processing of an Electronic Check transaction, you are authorizing the Tax Collector to debit your account for a one-time payment which may be processed as early as today.
Agent source review: October 26, 2026 · Snapshot
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Source & saved evidence
Current county property-tax service heading or explicitly linked destination; bill type and payment channel are reviewed separately.
n M. Mierzwa Treasurer-Tax Collector Belinda Zhu Assistant Treasurer Public Response Form Tax Portal Property owners can look up property tax details, pay online, schedule payments, sign up for Paperless Billing and review tax history. View or Pay Now Property Tax Information General information regarding secured, unsecured, supplemental and other services the Tax Collector provides. Learn more >
Agent source review: October 14, 2026 · Snapshot 97f9ec5f4a0fa1b7