The primary purpose of Regulation Z is to inform consumers of

Federal credit ceilings refer to limits set by the government on the amount of credit that can be extended to consumers. Regulation Z does not address these ceilings; instead, it focuses on transparency regarding the costs of credit rather than setting limits on how much credit can be provided to borrowers.

Multiple listing service (MLS) costs pertain to fees associated with the real estate industry for listing properties. Regulation Z does not cover MLS costs, as it is focused on lending practices and the disclosure of credit-related information to consumers rather than real estate transactions.

While Regulation Z does require disclosure of the monthly payment amount, its primary focus is on finance charges and the overall cost of credit. The monthly payment is just one aspect of the broader financial implications of a loan, which is why this option is not the primary purpose of Regulation Z.