(1) In general No open end consumer credit plan under which extensions of credit are secured by a consumers principal dwelling may contain a provision which permits a creditor to change unilaterally any term required to be disclosed under section
1637a (a) of this title or any other term, except a change in insignificant terms such as the address of the creditor for billing purposes.
(2) Certain changes not precluded Notwithstanding the provisions of subsection
(1), a creditor may make any of the following changes:
(A) Change the index and margin applicable to extensions of credit under such plan if the index used by the creditor is no longer available and the substitute index and margin would result in a substantially similar interest rate.
(B) Prohibit additional extensions of credit or reduce the credit limit applicable to an account under the plan during any period in which the value of the consumers principal dwelling which secures any outstanding balance is significantly less than the original appraisal value of the dwelling.
(C) Prohibit additional extensions of credit or reduce the credit limit applicable to the account during any period in which the creditor has reason to believe that the consumer will be unable to comply with the repayment requirements of the account due to a material change in the consumers financial circumstances.
(D) Prohibit additional extensions of credit or reduce the credit limit applicable to the account during any period in which the consumer is in default with respect to any material obligation of the consumer under the agreement.
(E) Prohibit additional extensions of credit or reduce the credit limit applicable to the account during any period in which
(i) the creditor is precluded by government action from imposing the annual percentage rate provided for in the account agreement; or
(ii) any government action is in effect which adversely affects the priority of the creditors security interest in the account to the extent that the value of the creditors secured interest in the property is less than 120 percent of the amount of the credit limit applicable to the account.
(F) Any change that will benefit the consumer.
(4) Consumer benefit
(A) In general
For purposes of paragraph (2)(F), a change shall be deemed to benefit the consumer if the change is unequivocally beneficial to the borrower and the change is beneficial through the entire term of the agreement.
(B) Board categorization
The Board may, by regulation, determine categories of changes that benefit the consumer.