Treasurer

Paying Taxes

**First installments or full property tax payments are due to the local treasurer by January 31. Please contact your local treasurer for payment options. (Treasurer Contact List) The County Treasurer collects second installment & delinquent taxes.

If you choose to pay your taxes in installments, you must pay each installment on or before 5 working days after the due date or the TOTAL amount of your remaining unpaid taxes will be delinquent and subject to interest & penalty.

Visit the Sauk County Ascent Land Records System (ALRS) to pay taxes online for second installment and delinquent taxes. 

USPS Policy Changes 

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. That means your postmark could be several days after you put it in your mailbox or drop off at the post office.  Many federal and state laws define a timely payment based off the USPS postmark, meaning payments may be considered delinquent if they are mailed too close to the deadline — even if they were, in fact, placed in a mailbox before the deadline.  "In other words, if you plan to pay your property taxes by mail, don’t wait until right before the deadline to put it in the mail.” It would be better to take it into the post office and ask them to date stamp the envelope in front of you. 

Search and Pay Property Tax Online 

Click here: ALRS to pay your property Taxes online or search for property information.  

Click here: Instructions for paying online.

The convenience fees to pay online are as follows (charged by MSB):

Credit Card             2.50% of the amount of the transaction

Debit Card              $2.95 flat fee per transaction

Electronic Check    $1.50 per transaction (up to $10,000)

NOTE: There are a few municipalities that have contracted with MSB to allow property owners to pay their first installment online using the ALRS system via the Sauk County Website. The same fees will apply.

Those municipalities are:

Town of Delton
Town of Fairfield
Town of Greenfield
Town of Sumpter

If your property is in one of the municipalities listed above and you would like to make your first installment payment online, click the ALRS link above.

Delinquent Payments Accrue Interest

All delinquent balances will accrue 1.5% interest & penalty on the 1st of each month until paid in full.  Please visit the Pay the Treasurer's Office page for information regarding payment options.

WISCONSIN HELP FOR HOMEOWNERS

Wisconsin Help for Homeowners (WHH) is a new statewide program that can help with overdue bills like mortgage payments, property taxes, and utilities. The program is available to Wisconsin homeowners with overdue housing-related bills, both with and without a mortgage, who meet income and other eligibility requirements, and have experienced a qualified economic hardship since January 21, 2020.

To apply, visit HomeownerHelp.WI.Gov (Scroll to the bottom of this page and click the weblink)
Contact the WHH call center at 1-855-2-HOME-WI for additional information about how to apply. Note: Applications can’t be submitted by phone.
Questions? Review WHH Frequently Asked Questions