115–97 . 2208. Installments not to prevent credit or refund of overpayments or increase estimated taxes (a) In general Section 965(h) of the Internal Revenue Code of 1986 is amended by adding at the end the following new paragraph: (7) Installments not to prevent credit or refund of overpayments or increase estimated taxes If an election is made under paragraph (1) to pay the net tax liability under this section in installments— (A) no installment of such net tax liability shall— (i) in the case of a request for credit or refund, be taken into account as a liability for purposes of determining whether an overpayment exists for purposes of section 6402 before the date on which such installment is due, or (ii) for purposes of sections 6425, 6654, and 6655, be treated as a tax imposed by section 1, section 11, or subchapter L of chapter 1, and (B) the first sentence of section 6403 shall not apply with respect to any such installment. . (b) Limitation on payment of interest In the case of the portion of any overpayment which exists by reason of the application of section 965(h)(7) of the Internal Revenue Code of 1986 (as added by this section)— (1) if credit or refund of such portion is made on or before the date which is 45 days after the date of the enactment of this Act, no interest shall be allowed or paid under section 6611 of such Code with respect to such portion