County Treasurer: Jennifer Grant

Deputy Treasurer: Theresa Schultz

515 W. Moreland Blvd. RM AC 148
Waukesha, WI 53188 

Office Hours: 8:00 a.m.- 4:30 p.m. (Mon - Fri)
Phone: 262-548-7029
Fax: 262-896-8037
Email

Treasurer

SEARCH YOUR PROPERTY TAX BILL RECORDS

Three ways to pay your Property Taxes 

  1. Mail: Waukesha County Treasurer, 515 W Moreland Blvd., Rm AC148, Waukesha, WI 53188 
  2. Dropbox: The blue & white drive-up drop box is located on east side of Waukesha County Courthouse facing Pewaukee Rd, on the island near the blue postal box
  3. Online: https://tax.waukeshacounty.gov

Online Payment Methods

  • Direct Debit from checking account - $1.50 fee (If payment is greater than $10,000 - $10.00 fee)
  • Debit Card - $3.95 fee
  • Credit Card - 2.39% of payment amount, $1.50 minimum fee

Dropbox Location

A blue & white drive-up dropbox is located on the east side of the Waukesha County Administration Building, across from Door 35, facing Pewaukee Road. Any tax payments deposited in the dropbox by 7:30 a.m. will be dated for the previous day.

ADVISORY FOR PROPERTY TAXPAYERS

USPS POLICY CHANGE REGARDING POSTMARKS

If you pay your property taxes by mail, please be aware of a recent U.S. Postal Service policy change that may affect when envelopes are postmarked.

In August 2025, the Postal Service instituted a nationwide change as to when a postmark is affixed to incoming mail. Instead of postmarks being affixed when the item is first touched by the Postal Service, postmarks are now stamped at regional sorting centers. This means that your postmark could be several days after you put it in your mailbox.

For most municipalities in Wisconsin, the due dates for property tax payments are as follows:

First installment: Due on or before January 31
Second installment: Due on or before July 31

Again, if mailing your property tax payment, please ensure you leave enough time for your payment to arrive at a regional sorting center for post mark by the deadline. Simply placing your payment in a mailbox by the deadline may not ensure timely payment.

Pay/Search Property Taxes

Property Tax Due Dates

Property Tax Rate Chart-2025
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Property Owners Guide
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Lottery Credit Forms
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Lottery Credit Information

County Owned Property for Sale

County Unclaimed Funds

Note to Mortgage/Escrow Companies

Frequently Asked Questions
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Glossary of Tax Terms
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Municipal Directory

The County Treasurer is a State Constitutional Officer, whose directive is taken from various sections of Wisconsin Statutes and Waukesha County Codes and Ordinances. It is a partisan office, elected for a four year term.

Responsibility of the County Treasurer:

Manage County Funds by receipting and accounting for monies received from taxpayers, departments and government agencies. Disburse monies due employees, vendors, taxing jurisdictions and tax payers.
Invest County Funds to ensure security and achieve maximum returns while following guidelines set by County Board, State Statutes and County Investment Policy.
Administer Property Tax Laws and Collect Property Taxes as outlined in Wisconsin Statutes.
Maintain Tax Billing and Collection History Records for archives and public inspection per open records law.

MISSION STATEMENT

The mission of the County Treasurer's Office is to provide efficient, courteous service and maintain accurate records, while upholding the fiduciary and statutory responsibilities required of the office.

DOR Unclaimed Property

DOR Wisconsin Department of Revenue Portal

Wisconsin State Legislature Home Page