Marin County property tax tools

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Tools for Marin County, CA

Estimated bill

Not available yet

A usable Census rate has not been verified for this county.

Not tax or legal advice; confirm with your county.

Check the official information

Late payment penalty

Not available yet

A complete date-based penalty rule and its matching cutoff have not been verified here.

Not tax or legal advice; confirm with your county.

Check the official information

Source and verification

Notice: First installment of Secured Property Tax is due November 1, 2026, and becomes delinquent after December 10. A 10% penalty applies thereafter.

Official source. Last verified 2026-10-24.

Exemption savings

Check the exemptions that may fit. A “Yes” does not confirm eligibility; your assessor makes that decision.

Homeowners' Exemption

Qualifying owner-occupied principal residence on January 1; $7,000 reduction of taxable value.

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Possible annual savingsAnswer above

We’ll show the next step for this exemption.

Not tax or legal advice; confirm with your county.

Official eligibility and application

Eligibility source

The California Constitution provides a $7,000 reduction in the taxable value for a qualifying owner-occupied home. The home must have been the principal place of residence of the owner on the lien date, January 1st.

Official source. Last verified 2026-10-24.

Estimates are separate. Do not add them together; eligibility, taxing units and restrictions can overlap.

Is my assessment too high?

Not available yet

County Census medians are unavailable, so we cannot make this comparison.

Not tax or legal advice; confirm with your county.

Check the official information

Compare counties

Compare the same home value in up to four counties.

Home value to compare ($)

Estimated annual differenceAdd a place

Enter another ZIP, city or county to compare estimated annual bills.

Not tax or legal advice; confirm with your county.

Not tax or legal advice; confirm with your county. How these estimates work.

Updated October 24, 2026, from cited verification dates. Individual sources may have earlier checks.