Payment Options & Deadlines

At least the first installment of your property tax bill must be paid to the City of Sun Prairie by January 31, 2026. The first installment typically includes one-half of your property taxes and 100% of any special charges or assessments. The second installment is due to Dane County by July 31, 2026. Payments made after January 31, 2026, must be sent to the Dane County Treasurer.

Payment by Credit Card or E-Check **

You may use a credit or debit card to pay your taxes online from December 8th, 2025 through 4:00 PM CST on January 27th, 2026. A service fee equal to 2.35% of the payment amount will be applied.

You may also make an E-Check payment online from December 8th, 2026 through 4:00 PM CST on January 27th, 2026. A $1.00 service fee will be applied.

For Online Payments

1. Go to pay your tax online.

2. Enter your parcel or bill number.

3. Enter your name.

4. Enter the property address.

5. Enter the amount of the tax bill you wish to pay.

6. Select the continue button.

The system will then guide you through the payment process.

Payment by Mail

Sending your payment by mail is the best way to avoid long lines. Payments should be sent to:

City of Sun Prairie Treasurer
300 E. Main Street
Sun Prairie, WI 53590

Helpful Information

  • Include the parcel number and phone number on the check.
  • Endorsement on back of escrow checks only: if there are multiple names on the "Payable To:" line-all parties must sign the back of the check before submitting to the City of Sun Prairie. 
  • If you would like a receipt, include a business-sized self-addressed stamped envelope.
  • Mailed payments are deposited daily and receipts are generally sent the next day.
  • The City considers payments postmarked by December 31, 2025 as payment in 2025.

Payments must be postmarked by January 31, 2026 in order to be considered timely.

Payment in Person

Note - City Hall will be closed for the following holidays:

  • Wednesday, December 24
  • Thursday, December 25
  • Wednesday, December 31
  • Thursday, January 01, 2026
  • Monday, January 19, 2026

Drop Boxes

In addition, 24-hour drop boxes are available if you would like to make your payment after hours at the following locations:

  • City Hall Lobby- 300 East Main Street. Use the Main Street Entrance.
  • Westside Community Service Facility- 2598 West Main Street