20 percent Tenth year 10 percent. . (b) Conforming amendment (1) Section 965 of such Code is amended by striking June 30, 2003 each place it occurs and inserting June 30, 2016 . (2) Subparagraph (B) of section 965(b)(3) of such Code is amended by striking October 3, 2004 and inserting September 1, 2017 . (c) Effective date The amendment made by this section shall apply to taxable years ending on or after the date of the enactment of this Act. 9. Infrastructure Bank Holding Company credit (a) In general Subpart D of part IV of subchapter A of chapter 1 of the Internal Revenue Code of 1986 is amended by adding at the end the following new section: 45S. Infrastructure Bank Holding Company credit (a) In general For purposes of section 38, in the case of a taxpayer who holds a qualified Holding Company equity investment on a credit allowance date of such investment which occurs during the taxable year, the Infrastructure Bank Holding Company credit determined under this section for such taxable year is an amount equal to 16 percent of the amount paid to the Holding Company for such investment at its original issue. (b) Credit allowance date For purposes of this section, credit allowance date with respect to any qualified Holding Company equity investment is— (1) the date on which such investment is initially made, and (2) each of the 4 anniversary dates of such date thereafter. (c) Qualified Holding Company equity investment For purposes of this section, the term qualified Holding Company equity investment means any equity investment originally issued by the Holding Company to the taxpayer under section 4(a)(1) of the Infrastructure Bank for America Act of 2017 not later than 3 years after the date of the enactment of such Act. (d) Holding Company For purposes of this section, the term Holding Company means the Infrastructure Bank Holding Company established under the Infrastructure Bank for America Act of 2017. (e) Basis reduction The basis of any qualified Holding Company equity investment shall be reduced by the