Mortgage Substitution in Mexico: Switch Banks

Mortgage substitution (sustitución hipotecaria) is the process in which a new bank pays off the balance of your current mortgage and grants you a new loan, generally with a lower interest rate or better terms. It is a useful tool when you took out your mortgage several years ago and market rates have dropped, or when your credit profile has improved and you now qualify for better terms. Before you decide, it pays to compare the real interest savings against the cost of the process, since it involves expenses similar to those of taking out a brand-new loan.

When it makes sense to switch banks

Substitution usually makes sense when the gap between your current rate and the new offer is significant and you still have several years left on your term, since the interest savings add up over time. It is also worth considering if your credit history has improved considerably since you took out the original loan, or if your current bank does not offer competitive terms compared with the rest of the market. The less time you have left to pay, the smaller the relative benefit of switching, because the costs of the process may not be recouped in time. A simple calculation is to compare the expected monthly savings against the number of months it would take you to recover the substitution expenses.

Costs you should consider

Switching banks is not free: it involves notary and administrative expenses similar to those of taking out a new mortgage. Among the most common are:

• A new bank appraisal (avalúo bancario) of the property.
• Notary fees (gastos notariales) for canceling the previous mortgage and creating the new one.
• A possible loan origination fee (comisión por apertura) with the new bank.
• A possible early repayment penalty with the original bank, depending on the contract.
• Administrative time, since the process is not immediate.

Steps in the substitution process

The process begins with a comparison of offers from different banks, ideally relying on a free mortgage pre-qualification before formally committing. Once you have chosen the new bank, you apply for the loan with updated documentation, a new appraisal of the property is carried out and, once approved, the new bank pays off the outstanding balance directly with the original institution. Finally, the new deed (escritura) is signed before a notary public (notario público), where the previous lien is canceled and the new mortgage is established in your favor with the renegotiated terms.

Frequently asked questions

Does mortgage substitution require proving my income again?

Yes, the new bank will evaluate you as if you were a new customer, so you will need to provide proof of income, identification, and updated documentation for the property.

How long does the substitution process take?

It can vary depending on the bank and the complexity of the notary process, but it usually takes several weeks from the application to the signing of the new deed.

Can I negotiate with my current bank before switching?

Yes, some banks offer to renegotiate the rate for existing customers in order to retain them, which avoids the costs of a full substitution. It is worth asking before starting the process with another institution.