If the certificate credit rate exceeds 20 percent, the amount of the credit allowed to the taxpayer under paragraph (1) for any taxable year shall not exceed $2,000.
If the credit allowable under subsection (a) for any taxable year exceeds the applicable tax limit for such taxable year, such excess shall be a carryover to each of the 3 succeeding taxable years and, subject to the limitations of subparagraph (B), shall be added to the credit allowable by subsection (a) for such succeeding taxable year.
For purposes of this paragraph, the term “applicable tax limit” means the limitation imposed by section 26(a) for the taxable year reduced by the sum of the credits allowable under this subpart (other than this section and sections 23 and 25D).
Subsection (a) shall not apply to any indebtedness if all the requirements of subsection (c)(1), (d), (e), (f), and (i) of section 143 and clauses (iv), (v), and (vii) of subsection (c)(2)(A), were not in fact met with respect to such indebtedness. Except to the extent provided in regulations, the requirements described in the preceding sentence shall be treated as met if there is a certification, under penalty of perjury, that such requirements are met.
A certificate shall not apply to any indebtedness which is incurred after the close of the second calendar year following the calendar year for which the issuing authority made the applicable election under subsection (c)(2)(A)(ii).
Any issuing authority which revokes any mortgage credit certificate shall notify the Secretary of such revocation at such time and in such manner as the Secretary shall prescribe by regulations.
The Secretary may prescribe regulations which allow the administrator of a mortgage credit certificate program to reissue a mortgage credit certificate specifying a certified mortgage indebtedness that replaces the outstanding balance of the certified mortgage indebtedness specified on the original certificate to any taxpayer to whom the original certificate was issued, under such terms and conditions as the Secretary determines are necessary to ensure that the amount of the credit allowable under subsection (a) with respect to such reissued certificate is equal to or less than the amount of credit which would be allowable under subsection (a) with respect to the original certificate for any taxable year ending after such reissuance.
No credit shall be allowed under subsection (a) for any interest paid or accrued to a person who is a related person to the taxpayer (within the meaning of section 144(a)(3)(A)).
The term “principal residence” has the same meaning as when used in section 121.
The term “qualified rehabilitation” has the meaning given such term by section 143(k)(5)(B).
The term “qualified home improvement” means an alteration, repair, or improvement described in section 143(k)(4).
The term “qualified mortgage bond” has the meaning given such term by section 143(a)(1).
For purposes of this section, the term “single family residence” includes any manufactured home which has a minimum of 400 square feet of living space and a minimum width in excess of 102 inches and which is of a kind customarily used at a fixed location. Nothing in the preceding sentence shall be construed as providing that such a home will be taken into account in making determinations under section 143.
If for any calendar year any mortgage credit certificate program which satisfies procedural requirements with respect to volume limitations prescribed by the Secretary fails to meet the requirements of paragraph (2) of subsection (d), such requirements shall be treated as satisfied with respect to any certified indebtedness of such program, but the applicable State ceiling under subsection (d) of section 146 for the State in which such program operates shall be reduced by 1.25 times the correction amount with respect to such failure. Such reduction shall be applied to such State ceiling for the calendar year following the calendar year in which the Secretary determines the correction amount with respect to such failure.
For purposes of clause (i), the term “credit amount” means the sum of the products determined under clauses (i) and (ii) of subsection (d)(2)(A).
In the case of a State having one or more constitutional home rule cities (within the meaning of section 146(d)(3)(C)), the reduction in the State ceiling by reason of paragraph (1) shall be allocated to the constitutional home rule city, or to the portion of the State not within such city, whichever caused the reduction.
The provisions of this subsection shall not apply in any case in which there is a certification program which is designed to ensure that the requirements of this section are met and which meets such requirements as the Secretary may by regulations prescribe.
The Secretary shall prescribe such regulations as may be necessary to carry out the purposes of this section, including regulations which may require recipients of mortgage credit certificates to pay a reasonable processing fee to defray the expenses incurred in administering the program.
For provisions increasing the tax imposed by this chapter to recapture a portion of the Federal subsidy from the use of mortgage credit certificates, see section 143(m).