Section R. 206.19 - Adjustment of pre-tax gains or lossesRule 19.
(1) A taxpayer, whose federal adjusted gross income includes gains and losses realized in the tax year from the disposition of property acquired prior to October 1, 1967, which are described in and subject to the provisions of subchapter P of the internal revenue code, 26 U.S.C.S1201 et seq., may reduce taxable income by the portion of gain or loss attributable to the period before October 1, 1967. When this election is made, it shall include all items of gain or loss realized during the taxable year.(2) To compute this adjustment a fraction is applied to the gain. The denominator is the total months held and the numerator is the number of months held after October 1, 1967. In making this calculation, property acquired or disposed of from the first to the fifteenth of the month shall be counted from the first of the month and property acquired or disposed of after the fifteenth of the month shall be counted from the last day of the month.(3) Losses resulting from the application of this rule shall not be carried forward.Mich. Admin. Code R. 206.19