2026 Property Tax Due Dates
Installment 1
December 10
First installment
Installment 2
April 10
Second installment
Penalty: 10% + $10 feeGrace period: None
Payment Methods
Online, Mail, In-Person
Napa County Treasurer
Phone
707-253-4540How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Napa County Treasurer
In Person
Visit the Treasurer's office
Other Counties in California
About Napa County
Napa County is a county north of San Pablo Bay located in the northern portion of the U.S. state of California. As of the 2020 United States census, the population was 138,019. The county seat is the City of Napa.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 14 days before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.