In an update from the City of Watertown WI Government, they are reminding city taxpayers that 2021 Real Estate and Personal Property Taxes are due on or before January 31. This applies to taxpayers who wish to pay their taxes in full or choose the installment plan. Payments may be placed in the silver night deposit box located on the wall to the left of the front doors of city hall. Tax payments can be mailed but must be post-marked and received no later than 4:30 p.m. on Monday, February 7. If you have any questions on property taxes, call 920-262-4010.