(2) For nonresident estates and trusts with income derived from Maine sources, "alternative minimum taxable income" means tentative alternative minimum taxable income less the applicable exemption amount, the result of which is multiplied by a fraction, the numerator of which is the taxpayer's tentative alternative minimum taxable income from Maine sources and the denominator of which is the taxpayer's total tentative alternative minimum taxable income from all sources.

D.__"Exemption amount" means the applicable exemption as provided by the Code, Section 55(d) as of December 31, 2002, except that tentative alternative minimum taxable income as determined under paragraph H must be substituted in the computation of the phase-out under the Code, Section 55(d)(3).

E.__"Federal alternative minimum taxable income" means alternative minimum taxable income determined in accordance with the Code, Sections 55(b)(2) and 59(c).

F.__"Regular income tax" means:

(1)__For resident individuals, estates and trusts, the amount derived by multiplying the applicable tax rate or rates by taxable income under section 5121 or 5163;

(2)__For nonresident individuals, estates and trusts, the amount derived by multiplying the applicable tax rate or rates by taxable income under section 5121 or 5175, the result of which is adjusted for nonresident individuals in accordance with section 5111, subsection 4; or

(3) For taxable corporations, the amount derived by multiplying the applicable tax rate or rates against Maine net income under section 5102, subsection 8.

G.__"Tentative alternative minimum taxable income" means federal alternative minimum taxable income:

(1)__Reduced by income that states are prohibited under federal law from subjecting to income tax to the extent included in federal alternative minimum taxable income;