Mexico Crédito Hipotecario: Infonavit, Cofinavit, CAT Underwriting, and 40% DTI Ratios

Comprehensive Mexican mortgage guide: Infonavit subcuenta de vivienda, Cofinavit co-financing, bank underwriting, Costo Anual Total (CAT), and 35%–40% debt capacity limits.

Updated 2026-09-06 · Reviewed against Banco de México (Banxico) and CONDUSEF statutory parameters. · Fact-Checked Lending Norms

Infonavit and Cofinavit Structures

Private sector formal workers in Mexico accumulate mandatory 5% employer contributions in their Subcuenta de Vivienda at Infonavit. Through the Cofinavit scheme, buyers can combine their Infonavit savings and credit line with a commercial bank mortgage, allowing up to 95% combined LTV.

Costo Anual Total (CAT) Metric

Under Banco de México mandates, all mortgage providers must prominently display the Costo Anual Total (CAT)—a standardized financing metric that combines the base interest rate, opening commission (comisión por apertura), property appraisal (avalúo), and mandatory life and damage insurance.

Capacidad de Endeudamiento (35%–40% DTI)

Mexican commercial banks restrict monthly mortgage debt service to 35% to 40% of net verifiable monthly income, requiring an LTV between 80% and 90% (10% to 20% down payment).

Gastos Notariales and ISAI

Closing costs typically require 5% to 9% of the property value in cash: ISAI (Impuesto Sobre Adquisición de Inmuebles, 2%–5% depending on state), Public Registry fees, and notary honorariums.

ℹ️ Statutory Notice & Methodology

Global Finance Calculator provides mathematical estimates for education, planning, and comparison — not regulated financial advice or credit pre-approval. Tax legislation, statutory central bank buffers, and underwriting criteria change. Confirm critical figures with official regulatory publications or a licensed mortgage broker before signing contracts.