The Central Bank of Mexico opened a public consultation on draft amendments to its rules on the Costo Anual Total (CAT), proposing to revise the components and assumptions used to calculate and present the annual total cost of credit. The changes are intended to make CAT more useful for comparing financing costs across products and supporting better-informed borrowing decisions. The draft would simplify and update the CAT methodology used in credit card advertising and in credit card account statements, and introduce a calculation approach for revolving credit offered through channels other than credit cards where drawdowns are only available as fixed-term advances. It would also require entities to base CAT on insurance premium quotations provided by customers when the insurance meets the product characteristics set by the entity, bring debt-based crowdfunding institutions into scope, and revise the CAT methodology for loans secured by liquid collateral. Further measures would align commissions used in CAT calculations with those registered with the Central Bank of Mexico where registration is required, add clarifications and definitions, and adjust how CAT information is presented to the public, including requiring any credit simulators or comparison tools offered to customers to follow the Circular’s methodology. The draft provisions and consultation plan are available on the Central Bank of Mexico’s online consultation portal, which is also the only channel for submitting comments, until 18:00 on 22 December 2025.
Central Bank of Mexico 2025-11-07
Central Bank of Mexico launches consultation on revisions to Annual Total Cost calculation rules and disclosure
The Central Bank of Mexico has launched a public consultation on proposed amendments to the Costo Anual Total (CAT) rules to enhance credit cost comparability and improve borrowing decisions. Key changes include updating CAT methodology for credit card advertising, revolving credit, and loans secured by liquid collateral, and incorporating debt-based crowdfunding institutions. The amendments also propose aligning commission calculations with registered data and standardizing CAT presentation in credit simulators and comparison tools.