Dollar Stablecoin Tether Gains as US Hits Brazil Pix With 25% Tariff

Crypto News

The United States will impose a 25% tariff on most Brazilian goods beginning July 22, and for the first time Washington is aiming a trade measure squarely at another country's payment system. The action revives Section 301, a trade-law tool historically reserved for intellectual-property theft and market-access disputes, redeployed after the Supreme Court struck down the administration's earlier import taxes. At the center sits Pix, Brazil's state-run instant-payment network, which US trade officials frame as an unfair barrier to American firms. The move pushes dollar-pegged stablecoins deeper into a widening fight over who controls cross-border settlement and, ultimately, the dollar's reach abroad.

The US Trade Representative argues that Pix's rulebook tilts the field against American payment companies such as Visa and Mastercard. Officials point to a requirement that financial institutions holding more than 500,000 active accounts must offer Pix to individuals free of charge, alongside caps on the fees merchants can be charged. In its official statement, the USTR called the tariff necessary to ensure American workers and companies can compete on a level playing field. It is the first documented case of Section 301 being used against a sovereign payment rail, a precedent that could reshape how Washington treats publicly operated financial infrastructure in other markets.

Pix's scale explains why it has drawn Washington's attention. Since its November 2020 launch, the central-bank-operated system has been used by more than 170 million people and now processes more transactions than credit and debit cards combined. Central bank data show the network handled nearly 7 billion transactions worth roughly R$3 trillion, about $590 billion, in June alone. More than 90% of Brazilian adults rely on it. That reach has made Pix the effective standard for domestic settlement, displacing card networks and, US officials contend, foreclosing the market to foreign payment providers before they can compete for meaningful share.

Yet the dollar has quietly entrenched itself in Brazil through crypto rails rather than cards. Roughly 90% of the country's crypto transactions settle in dollar-pegged stablecoins led by Tether (USDT), with monthly volumes estimated between $6 billion and $8 billion. In practice, blockchain networks now act as a dollar corridor inside Brazil's digital economy, letting users and businesses hold and move value in dollar-linked assets instead of the real. Alongside the broader altcoin market and lending venues such as Aave, this stablecoin flow shows how private dollar liquidity keeps expanding even as Washington fights to defend the currency's role.

Brazil's monetary authority is moving to close that corridor. Resolution 561, set to take effect in October, will prohibit the use of stablecoins for cross-border payments, part of the central bank's effort to protect monetary sovereignty and tighten anti-money-laundering controls. The rule leaves Pix caught between two pressures at once: the US casts it as a trade barrier, while domestic regulators restrict the dollar-linked tokens that compete with it from abroad. For crypto firms, the measure signals that Brazil intends to police how digital dollars enter and leave the economy, even as demand for those tokens continues to climb.

The dispute also feeds a larger contest over the dollar's dominance. As 2025 chair of the BRICS bloc, Brazil made reducing dollar dependence a policy priority, promoting payment systems designed to bypass the US currency. The irony is that the greenback still dominates on the ground, circulating through the very stablecoins regulators now want to curb. Networks including Algorand and other public chains increasingly carry that dollar liquidity. Analysts frame Pix, stablecoins and prospective central-bank digital currencies less as rivals than as overlapping layers, each solving a different piece of the settlement puzzle across borders.

Read together, these developments mark a shift in which payment infrastructure has become a strategic asset contested by states, card networks and blockchains alike. Our reading is that the standoff accelerates dollar stablecoin adoption precisely as governments try to contain it. COINOTAG's aggregate market data set a cautious backdrop: the Fear & Greed Index sits at 25, or Extreme Fear, Bitcoin dominance stands at 69.9%, and total crypto market capitalization is about $1.85 trillion. With capital defensive and concentrated in Bitcoin, well below its all-time high, the Brazil case shows regulatory friction, not price, driving the next phase of the stablecoin story.