Wisconsin Statutes Taxation (Ch. 70 to 79) § 71.89. Appeal procedures

(1) If the taxpayer requests a hearing, the additional tax or overpayment shall not become due and payable until after hearing and determination of the tax by the tax appeals commission or disposition of the appeal pursuant to stipulation and order under ss. 73.01(4)(a) and 73.03(25).

(2) No person against whom an assessment of income or franchise tax has been made shall be allowed in any action either as plaintiff or defendant or in any other proceeding to question such assessment unless the requirements of ss. 71.88 and 71.90(1) shall first have been complied with, and unless such person shall have made full disclosure under oath at the hearing before the tax appeals commission of any and all income that the person received. The requirement of full disclosure under this subsection may be waived by the department of revenue.

(3) As soon as the appellant shall have filed a petition with the tax appeals commission, all collection proceedings, except proceedings under s. 71.74(14), shall be stayed until final determination of the appeal and any review thereof.

(4) Any person who contests an assessment before the tax appeals commission or in court shall state in his or her petition or notice of appeal what portion if any of the tax is admitted to be legally assessable and correct. Within 5 days after notice by the department, the appellant shall pay to the department the whole amount of the admitted tax and such tax shall be appropriated in accordance with s. 25.20. Any such payment shall be considered an admission of the legality of the tax thus paid, and such tax so paid cannot be recovered in the pending appeal or in any other action or proceeding.

(5) After final decision or other disposition, the record shall be returned to the department of revenue, and the department shall proceed to collect the taxes in the same manner as other income or franchise taxes are collected.