Latin America's Stablecoin Question Isn't Who Prints the Dollar — It's Where the Dollars Sleep 🏦

Latin American regulators face a structurally different stablecoin problem than their counterparts in Washington, where US authorities are debating issuer specifications, reserve requirements, and audit standards for dollar-pegged tokens. For savers in Buenos Aires, Bogotá, or Mexico City, the brand of stablecoin — whether USDC, USDT, or whichever token wins the US regulatory fight — matters less than whether it holds its peg and the custodian remains solvent. The asymmetry has pushed regional regulators toward a recurring error: importing Washington's debate over issuer characteristics when the harder question is where the reserves backing those tokens should be domiciled.

A dollar held in a reserve account in New York performs the same function on a user's screen as a dollar held in a reserve account in Buenos Aires or São Paulo, but for a regulator in a region where hard currency has been a chronic scarcity, the two are not equivalent. One is available to the local financial system under stress; the other is not. Argentina remains the world's most dollarized crypto market by share of volume, according to a16z crypto, but the pattern extends across the region. In Brazil, institutional stablecoin volume rose from 5% of local crypto flows in 2024 to 84% in 2025, and Mexico's Senate is now debating a bill to regulate peso-pegged stablecoins. None of the region's existing frameworks — including Argentina's PSAV regime, Brazil's rules in force since February, or the Mexican Senate bill — has attempted to mandate local reserve holdings.

A preview of what such a mandate could look like emerged in July, when Kenya's Treasury proposed requiring stablecoin issuers to hold at least 30% of customer funds in banks domiciled in the country. No Latin American regulator has advanced a comparable proposal, though the underlying logic — chronic dollar scarcity colliding with a financial system seeking to reclaim some claim on flows it cannot prevent — applies more acutely in Argentina or Venezuela than in Kenya. A rising share of household and corporate dollars sitting in instruments reserved entirely offshore will eventually resemble a domestic policy problem rather than a market outcome to accept passively, and the region's finance ministries are likely weighing how to respond.

The technical case against local reserve mandates is that they would fragment liquidity pools that today operate almost entirely in USDT and USDC across offshore reserve accounts, potentially raising costs and reducing peg stability for users in the very markets that depend on these tokens most. The competing case is that without any local claim on those reserves, dollarizing economies surrender monetary influence over the savings vehicles their citizens increasingly prefer. The debate over whether to require domestic reserve backing for stablecoins has not yet arrived in Latin America's legislative calendars, but the trajectory of regional dollarization suggests it will, and the answer will shape how the region's hardest-currency problem gets resolved in the next phase of crypto adoption.