How to pay Sonoma County, CA property tax
✓ Verified — Last verified October 24, 2026
Payment details from the official sources for Sonoma County. Check the tax year and parcel on your bill before submitting a payment.
Pay on the official siteNot tax or legal advice; confirm with your county.
Payment methods and fees
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Published installment dates
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Tax year 2026. Dates retain the year published by the source.
Official offices
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Sonoma County Auditor-Controller-Treasurer-Tax Collector
Sources for these instructions
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Read the source quotations (13)
https://sonomacounty.gov/acttc/pay-your-property-tax-bill-online
View and Pay Your Property Tax Bill Online
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https://sonomacounty.gov/acttc/pay-your-property-tax-bill-online
E-Check payments - FREE (electronic debit from your checking or savings account) -Credit card payments - 2.34% per transaction -Debit card payments - 2.34% per transaction
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https://boe.ca.gov/proptaxes/calendar.htm
First installment of real property taxes and all taxes on personal property on the secured roll are due and payable.
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https://www.boe.ca.gov/proptaxes/calendar.htm
§§ 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.
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https://www.boe.ca.gov/proptaxes/calendar.htm
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)
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https://boe.ca.gov/proptaxes/calendar.htm
Second installment real property taxes due and payable.
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https://sonoma-county.legistar.com/LegislationDetail.aspx?GUID=85229F86-DAC1-43F9-A7B6-FB64318D4451&ID=8205297&Options=&Search=
Fiscal Year 2026-27 Secured Property Tax Rates
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https://sonomacounty.gov/acttc/pay-your-property-tax-bill-online
Auditor-Controller-Treasurer-Tax Collector
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https://sonomacounty.gov/ACTTC/Revenue-Accounting/Reading-Your-Tax-Bill/
Any questions about values or assessments should be directed towards the Assessor’s Office at 707-565-1888.
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Continue with your property
Common questions
Where can I pay Sonoma County property tax?
Official payment portal: https://sonomacounty.gov/acttc/pay-your-property-tax-bill-online. E-check, Credit card, Debit card
Updated , from cited verification dates. Individual sources may have earlier checks.