2026 Property Tax Due Dates
Installment 1
January 31
Full or first installment
Installment 2
July 31
Second installment
Penalty: 1% monthly + 0.5% penalty monthlyGrace period: 5 business days
Payment Methods
Online, Mail, In-Person
Grant County Treasurer
Phone
(608) 723-2604How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Grant County Treasurer
In Person
Visit the Treasurer's office
Other Counties in Wisconsin
About Grant County
Grant County is the most southwestern county in the U.S. state of Wisconsin. As of the 2020 census, the population was 51,938. Its county seat is Lancaster and its largest city is Platteville.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
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Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.