Sec. 103.
Any taxpayer having income from business activity which is taxable both within and without this state, other than the rendering of purely personal services by an individual, shall allocate and apportion his net income as provided in this part.
History: 1967, Act 281, Eff. Oct. 1, 1967 ;-- Am. 1970, Act 140, Imd. Eff. Aug. 1, 1970 ;-- Am. 2011, Act 38, Eff. Jan. 1, 2012