Trump Tariffs Target Brazil's Pix as Stablecoins Quietly Dominate Payments

The U.S. will impose a 25% tariff on most Brazilian goods starting July 22, the first use of Section 301 trade authority under the revived Trump administration strategy. The case marks the first time Washington has deployed that tool to challenge a country's domestic payment system.

Ambassador Jamieson Greer said the action was necessary to ensure American workers and companies can compete on a level playing field.

At the center of the dispute is Pix, Brazil's state-run instant-payment system. More than 90% of Brazilian adults use it. It now handles more transactions in the country than credit and debit cards combined. The U.S. Trade Representative argues that Pix disadvantages American payment firms such as Visa and Mastercard, citing a rule that requires financial institutions with more than 500,000 active accounts to offer Pix to individuals free of charge.

Visa and Mastercard don't break out their Brazil revenue or market share. Pix has grown rapidly since its November 2020 launch. More than 170 million individuals have used the system. It processed nearly 7 billion transactions worth roughly R$3 trillion ($590 billion) in June, according to central bank data. In the second half of 2025, Pix handled 42.9 billion transactions, compared with 23.8 billion across credit, debit and prepaid cards.

The dispute comes as Washington grows more concerned about efforts by Brazil and other BRICS countries to reduce reliance on dollar-based payment infrastructure. Brazil made local-currency settlement and international payment platforms a policy priority during its 2025 BRICS presidency. Officials said the bloc was not developing a common BRICS currency.

Demand for the U.S. dollar in Brazil hasn't subsided. It circulates widely in the country's digital economy via blockchain-based payment rails. Dollar-linked stablecoins already account for roughly 90% of crypto transaction volume in Brazil, most of it used for payments and settlement, according to tax authority data. The country processes between $6 billion and $8 billion in crypto each month, much of it using dollar-denominated stablecoins instead of the real.

Even as dollar stablecoins have proliferated, Brazil's central bank has moved to limit their role in regulated cross-border payments. Resolution 561, effective October 1, will bar payment firms from settling cross-border payments in stablecoins or other crypto. It closes a back-end channel that had routed reais through dollar tokens. The central bank has cast stablecoins as a threat to monetary sovereignty, tax enforcement and anti-money laundering controls.

Pix now faces pressure from both sides. Washington named it a trade barrier. Brazilian regulators shield it from competition from dollar-backed stablecoins.

Rodrigo Caggiano, founder of Brazilian real-world asset monitoring platform RWA Monitor, said the two systems may not be competing. In practice they are complementary, he told CoinDesk. Pix has addressed domestic instant payments well, while stablecoins expand what is possible by operating on blockchain networks. U.S. pressure is likely to accelerate Brazil's regulatory debate on stablecoins and digital financial infrastructure, Caggiano said. The central bank is building its own tokenized-settlement system, Drex, on similar programmable rails.

The move creates a precedent for future trade disputes over governments building their own payment networks. It could extend beyond Brazil to countries such as India's Unified Payments Interface and the European Central Bank's planned digital euro, according to the Atlantic Council.

CEX trading volumes rose for the first time in five months in June. Spot climbed 15.3% to $1.11 trillion. RWA perpetual volumes surged to a record $311 billion.

Mastercard (MA) carries an Alpha Score of 54 out of 100, labeled Mixed, in the Financials sector. The stock is caught between the Pix tariff dispute and the broader shift toward stablecoin-based settlement that its own network competes with.