# SPEI

> Source: https://docs.barcoder.ai/docs/standards/spei
> research date 2026-05-29 · extracted at 2026-10-04
> Publisher: Barcoder — encyclopedia of QR, barcode and payment-code standards

Specifications:
- [SPEI — Banco de México](https://www.banxico.org.mx/servicios/sistema-pagos-electronicos-in001.html)

## Overview

> **Note on classification.** This entry was originally bucketed as a QR standard, but spei is **not a QR-symbol standard** — it is the underlying Mexican settlement rail (codi is the QR layer). Reclassified as `Instant payment`. The wiki shows no playground because there is no QR payload to encode; the slug is retained to avoid breaking incoming links.

**SPEI** (Sistema de Pagos Electrónicos Interbancarios — Interbank Electronic Payment System) is **Mexico's foundational real-time interbank-payment infrastructure**, created **13 August 2004 by Banco de México (Banxico)** as the **backbone of Mexico's payment system** <sup>[1][1], [2][2], [Mexico report](https://docs.barcoder.ai/docs/payments/MX)</sup>. SPEI replaced the earlier **SPEUA** (Expanded Use Electronic Payment System) which ceased operating a year later (2005). **6 out of 10 Mexicans use SPEI**, enabling **>13.7 billion digital transactions annually** — one of the largest national real-time-payment-system transaction volumes globally.

The structural significance: SPEI is the **underlying instant-rail beneath Mexico's broader payment-modernisation including [CoDi](https://docs.barcoder.ai/docs/standards/codi) (Cobro Digital — Mexican QR system) + DiMo (Dinero Móvil — phone-number-addressed)**. SPEI's **24/7 instant settlement** enabled Mexico's mobile-payment ecosystem to flourish. Mexico is **one of Latin America's most mature instant-payment markets** — with SPEI predating peer Latin American systems like Brazil's [Pix](https://docs.barcoder.ai/docs/standards/pix) (2020) by 16+ years + Colombia's emerging Bre-B by 20+ years. The combination of **Banxico's SPEI rail + CoDi QR-payment overlay (2019) + DiMo phone-addressed addressing** comprehensively covers Mexico's modern payment scenarios.

## History

**Pre-2004 — SPEUA (Expanded Use Electronic Payment System)** <sup>[2][2]</sup>:
- Banxico's earlier interbank payment system.

**13 August 2004 — SPEI launches** <sup>[1][1]</sup>:
- Banxico creates SPEI.
- Replaces SPEUA.

**2005 — SPEUA ceases operation** <sup>[2][2]</sup>:
- SPEI complete migration.

**Continuous evolution** <sup>[1][1]</sup>:
- 24/7 instant capability.
- Foundation for CoDi, DiMo, mobile-payment ecosystem.

**Recent — 6/10 Mexicans use SPEI, 13.7B+ annual transactions** <sup>[2][2]</sup>:
- Massive adoption.

## Technical specification

SPEI is **Banxico-operated foundational Mexican real-time interbank-payment infrastructure** <sup>[1][1], [2][2]</sup>:

| Layer | Description |
|---|---|
| **Operator** | **Banco de México (Banxico)** |
| **Launch** | **13 August 2004** |
| **Full name** | Sistema de Pagos Electrónicos Interbancarios |
| **Replaces** | SPEUA (2005) |
| **Currency** | MXN (Mexican peso) |
| **Settlement** | Real-time |
| **Availability** | 24/7 |
| **Mexican adoption** | **6 out of 10 Mexicans use SPEI** |
| **Annual transactions** | **13.7 billion+** |
| **Overlays** | [CoDi](https://docs.barcoder.ai/docs/standards/codi) (CoDi QR system, 2019), DiMo (mobile addressing) |

**Underlying rail for Mexican payment ecosystem** <sup>[2][2]</sup>:
- Mexican banks all SPEI-connected.
- CoDi + DiMo as consumer-facing overlays.

## Use cases

**Interbank real-time transfers** <sup>[1][1]</sup>: Cardinal use.

**Foundation for CoDi QR payments** <sup>[2][2]</sup>: CoDi rides on SPEI rail.

**Foundation for DiMo mobile addressing** <sup>[2][2]</sup>: Phone-number-addressed payments.

**B2B + payroll + supplier payments** <sup>[Mexico report](https://docs.barcoder.ai/docs/payments/MX)</sup>: Real-time business flows.

**Government services** <sup>[Mexico report](https://docs.barcoder.ai/docs/payments/MX)</sup>: Banxico-coordinated.

**24/7 mass-market** <sup>[2][2]</sup>: 13.7B+ annual transactions.

## Implementations & ecosystem

**Operator**: **Banco de México (Banxico)**.

**Participants**: All major Mexican commercial banks (Citibanamex, BBVA México, Santander México, Banorte, HSBC México, Scotiabank México, others).

**Overlays**: **[CoDi](https://docs.barcoder.ai/docs/standards/codi)** (CoDi QR, 2019), **DiMo** (mobile addressing).

**Major Mexican fintech connected**: Mercado Pago, Clip, Konfio, etc.

## Fun facts

- **13 August 2004 launch**: Among the oldest national real-time-payment-system infrastructures globally.
- **6 out of 10 Mexicans use SPEI**: Substantial population reach.
- **13.7B+ annual transactions**: Massive scale.
- **Predates Pix (2020) by 16 years**: SPEI is structurally Brazil-Pix-equivalent but much older.
- **24/7 instant**: Modern standard.
- **CoDi 2019 + DiMo overlays**: Comprehensive consumer-facing payment ecosystem.
- **Banxico-operated**: Central-bank-direct.
- **Replaced SPEUA**: Predecessor migration arc.

## Comparison

| Feature | SPEI (MX) | [Pix](https://docs.barcoder.ai/docs/standards/pix) (BR) | [FAST](https://docs.barcoder.ai/docs/standards/fast) (SG) | TIPS (EU) | FedNow (US) |
|---|---|---|---|---|---|
| Operator | Banxico (central bank) | BCB | SCHA (banks) | Eurosystem | Federal Reserve |
| Launch | **13 Aug 2004** | Nov 2020 | Mar 2014 | Nov 2018 | Jul 2023 |
| Annual transactions | **13.7B+** | 6.3B Q1 2025 | n/a | n/a | Growing |
| Population reach | 60% Mexicans | 159M users | Universal | EU PSPs | US banks |
| Consumer-facing overlay | CoDi + DiMo | Pix Aliases + QR | PayNow + SGQR + SGQR+ | n/a | n/a |

## Status

**Active, foundational Mexican payment-system infrastructure** <sup>[1][1], [2][2]</sup>:
- **Banxico operator** since 13 August 2004.
- **13.7B+ annual transactions**.
- **6 of 10 Mexicans use SPEI**.
- **24/7 real-time**.
- **Foundation for CoDi + DiMo**.

## Sources

[1]: https://www.banxico.org.mx/servicios/sistema-pagos-electronicos-in001.html "SPEI — Banco de México"
[2]: https://mith.mx/blog/spei-el-sistema-que-nunca-duerme-y-por-qu%C3%A9-m%C3%A9xico-es-l%C3%ADder-en-pagos-inmediatos "SPEI never sleeps — Mith"
[3]: https://dock.tech/es/fluid/blog/financeiro/spei/ "SPEI — Dock"

- [1] [SPEI — Banco de México][1]
- [2] [SPEI never sleeps — Mith][2]
- [3] [SPEI — Dock][3]
- <sup>[Mexico report](https://docs.barcoder.ai/docs/payments/MX)</sup> `reports/countries/MX-mexico.md`

## Deployments

Found in the following country reports (grep across `reports/countries/`):

- **MX** — [MX-mexico.md](https://docs.barcoder.ai/docs/payments/MX)