- Global exchanges are integrating SPEI, PIX, and Latin America’s instant payment rails.
- These integrations are becoming a key driver of crypto adoption and ecosystem growth.
For years, entering the crypto ecosystem from Latin America meant navigating an obstacle course: declined credit cards, P2P platforms where counterparties could disappear, hidden fees, and settlement delays that could last days.
The problem was never demand—the region has consistently ranked among the world’s fastest-growing cryptocurrency markets. The challenge was the entry infrastructure. Today, that equation is changing, driven by something that did not originate in crypto at all: the instant payment systems built by Latin America’s central banks.
PIX in Brazil, SPEI in Mexico, Transferencias 3.0 in Argentina, and a new generation of systems emerging in Colombia and other markets are becoming the missing bridge. Global exchanges know it. And the battle for the Latin American on-ramp has officially begun.
PIX: The Benchmark Case
Launched in November 2020 by the Central Bank of Brazil, PIX reached more than 70% of the Brazilian population—over 150 million people—in less than four years. Monthly transaction volumes reached R$2.5 trillion in July 2024. The speed of adoption is unprecedented in the region’s payments history.
For the crypto ecosystem, PIX became a natural catalyst. Brazilians use PIX as a high-speed on-ramp to acquire stablecoins, which then serve as flexible capital for accessing DeFi protocols, futures markets, and spot trading. The most revealing data point: Chainalysis estimates that more than 70% of crypto flows in Brazil involve stablecoins, confirming that digital dollarization—not speculation—is the primary underlying driver.
The industry’s response was immediate. Platforms and providers supporting PIX include Lemon, Binance Pay, Crypto.com, Mercado Bitcoin, and Kraken. BingX, meanwhile, offers BRL-to-USDT conversion through PIX in under ten seconds. Integration is no longer a competitive advantage—it has become a requirement for market entry.
PIX’s expansion is not stopping at Brazil’s borders. The Central Bank of Brazil has announced plans to extend the system so that Brazilians living in Argentina can use it to pay for goods and services and send payments between the two countries.
This creates a unique corridor: Argentine users facing persistent inflation can use fintech applications that connect stablecoin rails with Brazil’s PIX infrastructure. In practice, a user can pay a Brazilian merchant through PIX using a stablecoin balance, with USDT quietly settling the transaction behind the scenes.
SPEI: Mexico’s Mature Infrastructure
Mexico benefits from having arrived early. Since its launch in 2004, SPEI, operated by Banco de México, has enabled near-instant interbank transfers and has processed more than 13.7 billion digital transactions. Today, six out of every ten Mexicans use the system.
Its scale makes it critical infrastructure for the most important remittance corridor in the Americas. Bitso processes a significant share of remittances between the United States and Mexico using USDC and USDT, converting funds instantly into Mexican pesos through SPEI. According to Messari’s 2025 stablecoin report, Bitso leads the share of the U.S.-Mexico remittance corridor that has migrated to stablecoin rails, accounting for roughly 10% of total corridor volume.
Circle followed a similar path. In April 2025, the company introduced Circle Payment Network, a global platform that uses USDC for cross-border payments. Among its first participants was Alfred Pay, which offers payouts through PIX in Brazil and SPEI in Mexico. The integration of USDC with SPEI enables funds to move between pesos and dollars within seconds through domestic financial infrastructure.
CoDi—the QR-code payment system launched in Mexico in 2019—remains an unfinished chapter. While PIX had already reached 55% of Brazil’s population by May 2022, CoDi had been used by only 8% of Mexicans. The gap reflects differences in both design and adoption strategy. However, competitive pressure from PIX and the rise of digital wallets such as Mercado Pago are forcing a reassessment of that equation.
Argentina and the Rest of the Region
In 2021, Argentina’s central bank launched Transferencias 3.0, a system that enables fund transfers and payments in under 15 seconds, 24 hours a day, while connecting bank accounts and digital wallets through interoperable QR-code payments.
In a context of persistent inflation, the system did not solve the core challenge—the erosion of purchasing power in Argentine pesos—but it accelerated payment digitization and created the technical channel that crypto platforms need to connect with local users.
The trend extends across the region. Colombia’s central bank has announced the rollout of Bre-B in 2025, an instant payment system designed to transform how Colombians make transfers and electronic payments.
The pattern is increasingly clear: central banks build the infrastructure, fintechs adopt it, and the crypto ecosystem integrates it.
The Layer Connecting Everything: Local Stablecoins
If instant payment systems are the rails, stablecoins are the train.
USDT remains the most widely used digital asset in the region, particularly in high-inflation economies such as Argentina, where it functions as an immediate savings vehicle. USDC has also gained traction in Mexico and Brazil through strategic partnerships with fintech platforms.
The next frontier, however, is local-currency stablecoins.
Bitso launched MXNB, a digital peso designed for direct integration with SPEI and PIX. In Brazil, initiatives such as BRL1 are under development, although they still face challenges related to regulation and public trust. At the same time, the Central Bank of Brazil continues to advance Drex, its central bank digital currency (CBDC), which could eventually operate alongside the same instant payment infrastructure.
Teams building products on USDC still require regional settlement partners to complete the final leg of transactions onto domestic banking rails such as PIX in Brazil, SPEI in Mexico, and other Latin American systems.
That “last mile” has become the most contested layer of the stack. Whoever solves it at scale controls the gateway.
The Strategic Competition
What is at stake goes far beyond transaction fees.
Exchanges that achieve native integration—not dependence on third-party intermediaries—with PIX, SPEI, and their regional counterparts gain three advantages simultaneously: faster conversion, lower operating costs, and direct access to the user bases already relying on these systems. In Brazil alone, that audience exceeds 150 million people.
J.P. Morgan’s Payments Without Borders report documents how Latin America is moving toward real-time payments and cross-border interoperability, driven by systems such as PIX and regional initiatives like Nexus. The report describes the shift as a structural transformation toward smarter and more connected payment infrastructures.
The on-ramp is no longer a technical detail.
It is the strategy.