Apportionment formula computation.
(a)#
For taxable years beginning after December 31, 2007, if both the numerator and the denominator used to determine the percentage under sub. (3) (a) related to a taxpayer’s net income are zero, none of the taxpayer’s net income is apportioned to this state.
(b)#
For taxable years beginning after December 31, 2007, if the numerator used to determine the percentage under sub. (3) (a) related to a taxpayer’s net income is a negative number and the denominator used to determine the percentage under sub. (3) (a) related to a taxpayer’s net income is a positive number, a negative number, or zero, none of the taxpayer’s net income is apportioned to this state.
(c)#
For taxable years beginning after December 31, 2007, if the numerator used to determine the percentage under sub. (3) (a) related to a taxpayer’s net income is a positive number and the denominator used to determine the percentage under sub. (3) (a) related to a taxpayer’s net income is zero or a negative number, all of the taxpayer’s net income is apportioned to this state.