Mortgage Lending: § 1004.4 Requirements for Alternative Mortgage Transactions
4(a) Mortgages With Adjustable or Renegotiable Rates or Finance Charges and Home Equity Lines of Credit
1. Index values. A creditor may use any measure of index values that meets the requirements in § 1004.4(a)(2)(i). For example, the index may be either single values as of a specific date or an average of values calculated over a specified period.