; and (IV) honor any promotion or benefit available or granted to the borrower or advertised by the previous owner or transferor of such postsecondary education loan. (C) Material change in mailing address or procedure for handling payments (i) In general If a postsecondary educational lender or servicer makes a change in the mailing address, office, or procedures for handling payments with respect to any postsecondary education loan, the postsecondary educational lender or servicer shall notify the borrower in writing and through the borrower’s preferred or designated method of communication not less than 45 calendar days in advance of such change. (ii) Borrower protection window If a change described in clause (i) causes a delay in the crediting of the account of the borrower made during the 90-day period following the date on which such change took effect, the postsecondary educational lender or servicer may not impose on the borrower any negative consequences, including negative credit reporting, lost eligibility in borrower benefits, late fees, interest capitalization, or other financial injury. (D) Interest rate and term changes for certain postsecondary education loans (i) Notification requirements (I) In general Except as provided in clause (iii), a postsecondary educational lender or servicer shall provide written notice, in a clear and conspicuous manner, to a borrower of any material change in the terms of the postsecondary education loan, including an increase in the interest rate, not later than 45 days before the effective date of the change or increase. (II) Material changes in terms The Director shall, by regulation, establish guidelines for determining which changes in terms are material under subclause (I). (ii) Limits on interest rate and fee increases applicable to outstanding balance Except as provided in clause (iii), a postsecondary educational lender or servicer may not increase the interest rate or other fee applicable to an outstanding balance on a postsecondary education loan. (iii)