Property Tax Bills

You will be seeing your property tax bills coming in the mail soon. (sorry)  Just a reminder that property taxes are paid at the Rock County Court House at,

Rock County Treasurers Office

51 South Main Street,

Janesville WI 53545.

The Town of Harmony Clerk cannot take your payment. Payment options are listed below.

Paying by Mail

  • Include the Tax ID Number.
  • If paying more than one parcel with one check, list the Tax ID numbers and amounts for each parcel.
  • If you would like a receipt, enclose a stamped, self-addressed envelope.

Paying In Person

  • Bring your tax bill(s) with you.

The Treasurer’s Office accepts tax payments via cashier’s check, personal check, money order or cash.

  • Do NOT send cash in the mail. Cash is only accepted in person.
  • All payments must be made in United States Funds only.
  • If payment is made by check, the tax receipt is not valid until the check has cleared all banks.
  • Make checks or money orders payable to: Rock County Treasurer

Credit Cards & Electronic Checks

If Rock County collects your first installment, or if you are paying real estate taxes after January 31, you may pay by credit card or electronic check using the GovTech Services Inc website.

If you are one of the seven municipalities that does not send your first installment payment to Rock County, you CANNOT use the GovTech website for first installment payments.  

Credit Card Payments**

  • Call 1-855-912-ROCK or 1-855-912-7625
      or 
  • Visit the GovTech Services Inc website
  • You will need the Tax ID number located in the upper right hand corner or your tax bill.
  • The fee to use the credit card payment option is 2.29% of the total tax amount paid or $3.95 for debit cards. Please note, the debit card option for $3.95 is only available online, not over the telephone.
  • Allow 5 days for a credit card payment to be received by the Treasurer’s Office.


E-Checks (electronic check)**

  • Visit the GovTech Services Inc website
  • You will need the Tax ID number located in the upper right hand corner of your tax bill.
  • The fee to use the E-Check option is $1.00 per check. Multiple parcels may be paid with one E-Check.
  • Allow 5 days for an electronic check payment to be received by the Treasurer’s Office. 


**If you are one of the seven municipalities that does not send your first installment payment to Rock County, you CANNOT use the GovTech website for first installment payments.