plan under this subsection or a fixed repayment plan described in section 493E, as provided in section 428(b)(1)(D)(ii) or 455(d)(7) (as applicable). (4) Interest payments and accrual Notwithstanding any other provision of this Act, if a borrower's monthly payment for a loan under an income-based repayment plan under this subsection is insufficient to pay the accrued interest on the borrower's loan for such month— (A) in the case of a subsidized loan (including the portion of a consolidated loan that is a subsidized loan), any interest due and not paid under subsection (b)(2) on the subsidized loan for that month shall be paid or forgiven by the Secretary, except that a borrower of a subsidized loan shall only receive the benefits of this subparagraph for such loan for 36 months of payments under the income-based repayment plan