3.Credit for tax paid to other taxing jurisdiction. A resident individual, estate or trust is allowed a credit against the tax otherwise due under this section for the amount of alternative minimum tax imposed on that individual, estate or trust for the taxable year by another state of the United States, a political subdivision of any such state, the District of Columbia or any political subdivision of a foreign country that is analogous to a state of the United States with respect to income derived from sources in that taxing jurisdiction also subject to tax under this section. The credit for any of the specified taxing jurisdictions may not exceed the proportion of the tax otherwise due under this section that the amount of the taxpayer's tentative alternative minimum taxable income derived from sources in that taxing jurisdiction bears to the taxpayer's entire tentative alternative minimum taxable income. When a credit is claimed for alternative minimum taxes paid to both a state and a political subdivision of that state, the total credit allowable for those taxes in the aggregate may not exceed the proportion of the tax otherwise due under this section that the amount of the taxpayer's tentative alternative minimum taxable income derived from sources in the other state bears to the taxpayer's entire tentative alternative minimum taxable income. [2003, c. 673, Pt. JJ, §3(NEW); 2003, c. 673, Pt. JJ, §6(AFF).]