§1666i–1. Limits on interest rate, fee, and finance charge increases applicable to outstanding balances — Inbound Citations

(1) In the case of any credit card account under an open end consumer credit plan, a creditor shall provide a written notice of an increase in an annual percentage rate (except in the case of an increase described in paragraph (1), (2), or (3) of section 1666i–1(b) of this title) not later than 45 days prior to the effective date of the increase.

(a) Except in the case of an increase described in paragraph (1), (2), (3), or (4) of section 1666i–1(b) of this title, no increase in any annual percentage rate, fee, or finance charge on any credit card account under an open end consumer credit plan shall be effective before the end of the 1-year period beginning on the date on which the account is opened.

(4) Closure or cancellation of an account by the obligor shall not constitute a default under an existing cardholder agreement, and shall not trigger an obligation to immediately repay the obligation in full or through a method that is less beneficial to the obligor than one of the methods described in section 1666i–1(c)(2) of this title, or the imposition of any other penalty or fee.