Napa County property tax
6 days left Until this due date
Verified — Last verified . View source
Last day to pay without a penalty: .
Read the county’s exact wording
Officially published. Check the county’s payment time and method. Updated daily.
The first installment is due November 1, 2026, and must be paid by 5 p.m. on December 10, 2026 to avoid a 10% penalty.
Not tax or legal advice; confirm with your county. Dates are shown as published by the source.
Installment timeline
2026–2027Due dates and filing windows, in one view.
Sources. Checked .
Today:
Assessment notice: not yet verified.
How to pay
Sources. Checked .
Payment methods
Officially published
Late payments and penalties
Sources. Checked .
Published rate: 10%
A numerical example is unavailable without a verified single percentage and unit. Use the published rule or ask the county for a payoff amount.
Assessment appeals
Sources. Checked .
Exemptions
Sources. Checked .
Homeowners' Exemption
Who may qualify
Officially published
County offices
Sources. Checked .
Common questions
Sources. Checked .
When is property tax due in Napa County?
First secured installment: November 1, 2026 (Officially published). Second secured installment: February 1, 2027 (Officially published).
Where can I pay Napa County property tax?
Use the official payment portal: https://common2.mptsweb.com/mbc/napa/tax/search/. E-check, Visa, Mastercard, Discover, Google Pay, Apple Pay, PayPal, Venmo
What is the late-payment penalty for Napa County property tax?
First installment unpaid by 5 p.m. December 10, 2026 incurs a 10% penalty.
Sources
Sources. Checked .
Read the source quotations (15)
https://www.napacounty.gov/m/NewsFlash/Home/Detail/889
first installment of their 2026-2027 property taxes
Checked .
https://www.napacounty.gov/m/NewsFlash/Home/Detail/889
The first installment is due November 1, 2026, and must be paid by 5 p.m. on December 10, 2026 to avoid a 10% penalty.
Checked .
https://www.napacounty.gov/m/NewsFlash/Home/Detail/889
The second installment is due February 1, 2027. Taxpayers have until 5 p.m. on April 12, 2027 to pay without a penalty because April 10 falls on a Saturday.
Checked .
https://www.boe.ca.gov/proptaxes/homeowners_exemption.htm
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.
Checked .
https://www.napacounty.gov/m/NewsFlash/Home/Detail/889
must be paid by 5 p.m. on December 10, 2026 to avoid a 10% penalty.
Checked .
https://www.napacounty.gov/1260/How-to-Pay-Your-Property-Taxes
Accepted methods of payment: eCheck, Visa, Mastercard, Discover, Google Pay, Apple Pay, PayPal, Venmo
Checked .
https://common2.mptsweb.com/mbc/napa/tax/search/
the vendor processing your payments assesses the service fees.
Checked .
https://www.napacounty.gov/m/NewsFlash/Home/Detail/889
Robert Minahen, Napa County Tax Collector
Checked .
https://www.napacounty.gov/154/Assessment-Appeals-Process
Napa County Assessor-Recorder-County Clerk at 707.253.4459
Checked .
https://www.napacounty.gov/1415/Assessment-Appeals
Regular Assessments – Filed between July 2 and November 30 of the current year
Checked .
https://www.napacounty.gov/1415/Assessment-Appeals
The Clerk of the Assessment Appeals Board has up to two years to schedule a hearing
Checked .
How we verified this page
Official sources, verification dates and corrections
Property tax in Napa County: county, state and US
Compare Census estimates and read the sampling notes
Sources. Checked .
Census ACS 2020–2024 estimates for owner-occupied homes. The median annual tax paid is a historical survey estimate, not a quote for this year’s bill.
| Area | Median annual tax paid | Median home value | Effective rate estimate |
|---|---|---|---|
| Napa County | $5,995 | $869,500 | 0.69% |
| California | $5,124 | $734,700 | 0.70% |
| United States | $3,119 | $332,700 | 0.94% |
Napa County’s effective-rate point estimate is 0.01 percentage points below California’s and 0.25 percentage points below the US estimate.
Effective rate = median annual real estate taxes paid (B25103) ÷ median owner-occupied home value (B25077). State and US figures use their own Census medians, not averages of counties. These ratios are not rates set by law or medians of individual tax rates. Differences are not tests of statistical significance. Bounded or missing estimates stay unavailable.
Census sources, quotations and sampling uncertainty
Napa County
Annual taxes: $5,995 (90% margin of error: ±$236). Census table B25103_001E.
0500000US06055|5995|236|6910|227|4076|500
Home value: $869,500 (90% margin of error: ±$15,451). Census table B25077_001E.
0500000US06055|869500|15451
Estimated effective rate: 0.69%. Census source.
0500000US06055|5995|236|6910|227|4076|500
California
Annual taxes: $5,124 (90% margin of error: ±$17). Census table B25103_001E.
0400000US06|5124|17|5839|17|3825|19
Home value: $734,700 (90% margin of error: ±$1,307). Census table B25077_001E.
0400000US06|734700|1307
Estimated effective rate: 0.70%. Census source.
0400000US06|5124|17|5839|17|3825|19
United States
Annual taxes: $3,119 (90% margin of error: ±$4). Census table B25103_001E.
0100000US|3119|4|3489|4|2576|4
Home value: $332,700 (90% margin of error: ±$236). Census table B25077_001E.
0100000US|332700|236
Estimated effective rate: 0.94%. Census source.
0100000US|3119|4|3489|4|2576|4
Guides and related dates
- How to pay Napa County property tax
- Napa County assessment appeal instructions
- California rules and county directory
- National calendar
- November 2026 dates announced by counties
- February 2027 dates announced by counties
- First-time homeowner guide
- How assessment appeals work
- Understanding homestead exemptions
Napa County property tax calculator
Estimate your bill, check exemptions and compare counties
Tools: Napa County, CA
Property tax calculator
Estimated annual property tax $5,995
$869,500 home value × 0.69% Census effective rate ≈ $5,995 per year. Uses the unrounded ratio; your actual bill may differ.
Estimate only. Not tax, legal or financial advice; confirm with your county.
Starts at the Census median for Napa County, CA.
Math and official Census sources
$5,995 median annual tax ÷ $869,500 median home value = 0.69%. Census ACS 2020–2024; a historical survey ratio, not a parcel tax rate.
0500000US06055|869500|15451
Census source. Last verified 2026-10-24.
0500000US06055|5995|236|6910|227|4076|500
Census source. Last verified 2026-10-24.
Full Napa County, CA calculator: exemptions, rates, dates and reminders
Prorated property tax calculator
Nearby counties and other due dates
Nearby counties
We haven’t verified a shared Census area for nearby county links.
Other counties in California due soon
Published payment dates in the next 60 days.
- Alameda County Due date:
- Amador County Due date:
- Butte County Due date:
- Calaveras County Due date:
Date sources and verification
Alameda County
Set by law. Verified October 24, 2026. Official date source
§ 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.
Amador County
Set by law. Verified October 25, 2026. Official date source
§ 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.
Butte County
Set by law. Verified October 24, 2026. Official date source
§ 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.
Calaveras County
Set by law. Verified October 25, 2026. Official date source
§ 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.
Updated , from cited verification dates. Individual sources may have earlier checks.