is issued by the Board of Governors of the Federal Reserve System to implement the federal Truth in Lending Act, which is contained in title I of the Consumer Credit Protection Act. This helps consumers uncover the true cost of obtaining credit.

The purpose of Regulation Z is to:
Promote the informed use of consumer credit by requiring disclosures about its terms and cost. The regulation also gives consumers the right to cancel certain credit transactions that involve a lien on a consumer's principal dwelling, regulates certain credit card practices, and provides a means for fair and timely resolution of credit billing disputes. The regulation does not govern charges for consumer credit. The regulation requires a maximum interest rate to be stated in variable-rate contracts secured by the consumer's dwelling. It also imposes limitations on home equity plans that are subject to the requirements of § 226.5b and mortgages that are subject to the requirements of § 226.32. The regulation prohibits certain acts or practices in connection with credit secured by a consumer's principal dwelling.