SPEI in Mexico: Banxico's new transfer rules by 14 December 2026
By 14 December 2026 every Mexican bank must move SPEI transfers in its app to a single four-step flow, and Banxico expects SPEI to overtake cards by number of operations by year-end. Merchants should adapt their bank-transfer payment page.
Mexico's instant transfer system SPEI is having a landmark year. The Bank of Mexico (Banxico) expects the number of SPEI operations to overtake card payments by the end of 2026, and by 14 December every participating bank must rebuild transfers in its mobile app to a single standard. For merchants that accept bank transfers, this is a chance to lift conversion and a good reason to review the payment page.
SPEI is catching up with cards: the numbers
According to Expansión (August 2026), Banxico forecasts that by the end of 2026 the number of SPEI operations will exceed the number of credit and debit card payments. The outlet also reports:
- in 2025 SPEI processed more than 7.3 billion transfers worth almost 600 trillion pesos, about 16.8 times Mexico's GDP (figures from the payments company STP);
- around 73.5 million adults use SPEI;
- 78% of formal businesses accept electronic transfers;
- yet 85% of people still pay cash for purchases of up to 500 pesos (Panorama Nacional de Inclusión Financiera 2025–2030).
The takeaway is simple: in Mexico a bank transfer is no longer a fallback but a mainstream way to pay, especially online, where not everyone has a card or wants to use it.
Banxico Circular 10/2026: what changes in banking apps
Banxico Circular 10/2026 was published in the DOF official gazette on 17 June 2026. According to N+, banks and other SPEI participants must implement the new rules for transfers from mobile apps no later than 14 December 2026. The goal is to make a transfer equally clear in every bank.
A transfer in four steps at most
The transfer process must fit into no more than four stages:
- authentication;
- data entry;
- data review;
- transfer result.
Banks must also adjust buttons and the sequence of actions: choosing the source account, reviewing and confirming the operation.
Three ways to identify the recipient
Users will identify the recipient account with one of only three identifiers:
- CLABE, the 18-digit standardised account number;
- the debit card number (16 digits) linked to the account;
- the mobile phone number (10 digits) linked to the account.
Receipt and tracking key
After the transfer, customers must have easy access to the clave de rastreo (tracking key) and a link to the electronic payment receipt (CEP).
How to adapt your checkout to the new SPEI flow
A short, uniform transfer flow means fewer mistakes and fewer abandoned payments. But the gains go to merchants who adapt their payment page to it.
| Change | What the merchant should do |
|---|---|
| Transfer in 4 steps | Show payment details so they are easy to copy in one go: CLABE, amount, reference. |
| Recipient by CLABE, card or phone | Ask your PSP which identifiers are supported for crediting and hide fields you do not need. |
| Access to clave de rastreo and CEP | Accept the tracking key in support and in the "I have paid" form to resolve disputed payments faster. |
| Growing SPEI share | Place SPEI next to cards instead of hiding it under "other methods". |
Reconciliation deserves a separate thought. If you use a unique CLABE per order or customer, incoming payments are matched automatically. If not, the clave de rastreo and CEP become the main proof of payment, and your support team needs a clear way to verify them.
How to prepare before 14 December
- Pay by transfer from two or three popular banking apps and count the steps from your page to confirmation.
- Make sure the instructions on your payment page do not contradict the banks' new interface (button names, order of steps).
- If you operate in higher-risk verticals, discuss limits and crediting times with your PSP in advance; see our high-risk section.
SPEI is becoming the main rival to cards in Mexico, and by year-end it will be even easier to use. Find providers that accept SPEI on our page about payment methods in Mexico or in the Latin America overview. Submit a request and we will suggest suitable positions.
Sources
This article was prepared by the PayFlow editorial team with the help of AI, based on the public sources listed above. It is for information only and is not legal or financial advice; provider terms change — check current terms with an operator.