pay to each possession of the United States which does not have a mirror code tax system amounts estimated by the Secretary of the Treasury as being equal to the aggregate benefits (if any) that would have been provided to residents of such possession by reason of the amendments made by this section if a mirror code tax system had been in effect in such possession. The preceding sentence shall not apply unless the respective possession has a plan, which has been approved by the Secretary of the Treasury, under which such possession will promptly distribute such payments to its residents. (3) Coordination with credit allowed against United States income taxes No credit shall be allowed against United States income taxes under section 6434 of the Internal Revenue Code of 1986 (as added by this section) to any person— (A) to whom a credit is allowed against taxes imposed by the possession by reason of the amendments made by this section, or (B) who is eligible for a payment under a plan described in paragraph (2). (4) Mirror code tax system For purposes of this subsection, the term mirror code tax system means, with respect to any possession of the United States, the income tax system of such possession if the income tax liability of the residents of such possession under such system is determined by reference to the income tax laws of the United States as if such possession were the United States. (5) Treatment of payments For purposes of section 1324 of title 31, United States Code, the payments under this subsection shall be treated in the same manner as a refund due from a credit provision referred to in subsection (b)(2) of such section. (c) Deficiencies Section 6211(b)(4) of the Internal Revenue Code of 1986 is amended by striking and 6433 and inserting 6433, and 6434 . (d) Payment authority Section 1324(b)(2) of title 31, United States Code, is amended by striking or 6433 and inserting 6433, or 6434 . (e) Conforming amendments (1) Subpart A of part IV of subchapter A of chapter 1 of the Internal Revenue Code