Note: See s. Tax 2.65 for additional rules relating to the designated agent of a combined group.
Note: Decisions of the U.S. tax court and other courts ordinarily become final as follows:
Note: See s. Tax 2.67 (4) for rules relating to the statute of limitations as applied to combined returns.
Examples:
Example: An individual taxpayer filed a 2015 calendar-year basis Wisconsin income tax return on April 15, 2016. The internal revenue service made adjustments to the 2015 federal income tax return which the taxpayer did not report to the department within 90 days after the adjustments became final. The internal revenue service reports these adjustments to the department under the exchange of information agreement between the two agencies on May 1, 2018. The department may issue an assessment for the adjustments any time on or before May 1, 2022.
Wis. Admin. Code Department of Revenue Tax 2.105
Section 71.76, 1989 Stats., was amended by 1991 Wis. Act 39, effective for federal changes or corrections to a federal income tax return that became final on or after August 15, 1991, and for amended federal and other state returns filed on or after August 15, 1991. Under the statute in effect immediately prior to the enactment of 1991 Wis. Act 39, a taxpayer was required to report internal revenue service adjustments to taxable income that affected the income reportable or tax payable to Wisconsin, and to file an amended Wisconsin return if information contained on an amended federal or other state tax return affected income reportable or tax payable to Wisconsin.
Section Tax 2.105 interprets ss. 71.255(1) and (7), 71.75(2), 71.76, 71.77(2) and (7) and 77.96(4), Stats.