Wis. Stat. § 74.73: Rights of occupant or tenant who pays taxes.

An occupant or tenant of property who pays real property taxes, special assessments, special charges or special taxes levied against the property, including any interest or penalties, may recover the amounts paid, plus interest at the rate of 1.0 percent per month or portion of a month, from the person under whom he or she is an occupant or tenant. Unless otherwise agreed between the parties, the occupant or tenant may deduct the amounts paid, plus interest, from rental payments otherwise due to the person under whom he or she is an occupant or tenant.