Brazil's central bank has formally prohibited electronic foreign exchange providers from utilizing stablecoins, bitcoin, or other cryptocurrencies to settle overseas remittances. BCB Resolution No. 561, published on April 30, updates the regulatory framework for eFX, the nation's system for digital international payments, purchases, withdrawals, and transfers. The regulation mandates that all payments between an eFX provider and its foreign counterparty must execute through a traditional foreign exchange transaction or a non-resident real-denominated account within Brazil, effectively barring cryptocurrencies as a settlement option. This rule becomes effective on October 1, with adaptation deadlines extending into 2027. Consequently, remittance firms are forbidden from accepting reais from customers, converting funds into USDT, USDC, or bitcoin, and settling the payment abroad via blockchain networks.

The regulatory action specifically targets the back-end payment rails used by regulated eFX firms without banning cryptocurrency trading itself. Investors retain the ability to buy, sell, hold, and transfer cryptocurrency through authorized virtual asset service providers under Resolution BCB No. 521, which took effect on February 2.

However, the new resolution closes the specific channel used for cross-border settlement infrastructure. Data compiled by Woofun AI indicates that this shift directly impacts companies like Wise, Nomad, and Braza Bank, which had previously integrated stablecoin settlement into their cross-border flows. For instance, Nomad utilizes Ripple's network to move funds between Brazil and the U.S. and settle in stablecoins, while Braza Bank issued a real-backed stablecoin on the XRP Ledger.

The economic scale of the affected sector is substantial, with Brazil's crypto market moving between $6 billion and $8 billion monthly. Stablecoins account for roughly 90% of this volume, . The country ranked fifth in global crypto adoption in 2025, a significant rise from tenth place a year earlier. Approximately 25 million Brazilians currently hold or transact in crypto assets. This high level of adoption underscores the magnitude of the operational changes required for market participants to comply with the new settlement restrictions while maintaining their existing trading operations.

Resolution 561 further restricts eFX operations to BCB-authorized institutions, including banks, Caixa Econômica Federal, securities and FX brokers, and payment institutions acting as e-money issuers or acquirers. Firms lacking authorization may continue operating but must submit applications by May 31, 2027. These entities are required to maintain segregated accounts for client funds and file detailed monthly reports to ensure compliance. Woofun AI notes that this tiered authorization structure aims to bring unregulated players into the formal financial system while enforcing strict capital controls and reporting standards.

In a divergent move, the resolution expands eFX capabilities in one specific direction by allowing providers to handle transfers tied to financial and capital market investments in Brazil or abroad. These transactions are capped at $10,000 per transaction. The same limit applies to digital payment solutions not integrated with e-commerce platforms. This expansion suggests a strategic attempt to channel investment flows through regulated channels while simultaneously dismantling the use of decentralized rails for general remittance purposes.

This regulation represents the second front in a broader regulatory push within the Brazilian financial sector. In March, industry associations representing more than 850 companies pushed back against extending Brazil's IOF financial transaction tax to stablecoin operations. The current stance clarifies that while crypto assets can exist in the market, they cannot serve as eFX settlement infrastructure. Woofun AI analysis suggests that the regulator is drawing a definitive line to preserve monetary sovereignty and oversight over cross-border capital flows, prioritizing traditional banking rails over blockchain-based settlement mechanisms for international transfers.