alternative minimum taxable income
(2) Alternative minimum taxable income The term “alternative minimum taxable income” means the taxable income of the taxpayer for the taxable year— (A) determined with the adjustments provided in section 56 and section 58, and (B) increased by the amount of the items of tax preference described in section 57. If a taxpayer is subject to the regular tax, such taxpayer shall be subject to the tax imposed by this section (and, if the regular tax is determined by reference to an amount other than taxable income, such amount shall be treated as the taxable income of such taxpayer for purposes of the preceding sentence).