; and (B) in the case of an unsubsidized loan or a subsidized loan that no longer qualifies under subparagraph (A), 50 percent of the interest not covered by the borrower's monthly payment shall be paid or forgiven by the Secretary and the amount of the remaining interest shall be added to the balance of interest due on the loan, but shall not capitalized. (5) Written, electronic, or verbal enrollment in income-based repayment (A) In general A borrower of a loan made under this part may elect to repay such loan under the income-based repayment plan under this subsection by providing written, electronic, or verbal notice to the Secretary of the borrower's desire to make such election, subject to subparagraph (C). (B) Use of information (i) In general The estimated monthly payment amount under this section for a loan for a borrower who makes an election described in subparagraph (A) shall be immediately calculated using the income and family size information provided through the borrower’s written, electronic, or verbal statement. (ii) Verification The information described in clause (i) shall be verified by the Secretary not later than 90 days after the date the borrower states such income and family size information. If the Secretary is unable to verify the information by the end of the 90-day period, the borrower’s payment will be deemed to be the amount applicable under the fixed repayment plan under section 493E. (iii) Adjustment if necessary Upon verification by the Secretary under clause (ii), the Secretary shall adjust the estimated monthly payment described in clause (i) based on the verified income and family size information of the borrower, if necessary. Any adjusted monthly payment shall take effect beginning with the payment due not less than 60 days after the Secretary notifies the borrower of the adjusted amount. (C) Limitation The Secretary shall permit a borrower to make an election of income-based repayment in the written, electronic, or verbal manner described in subparagraph (A) only in