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Why the Regulatory Landscape Matters Now
For most of the past decade, stablecoins operated in Latin America under a combination of general financial consumer protection rules, anti-money laundering obligations originally designed for banks, and a persistent regulatory gray zone for everything in between. That arrangement worked when stablecoin volumes were small. It stopped working when they grew to matter.
Brazil received an estimated $318 billion in crypto value in 2024, with stablecoins accounting for approximately 90% of that volume (Chainalysis, 2024 Geography of Cryptocurrency Report; BCB). Argentina ranked fourth globally in the Chainalysis 2025 Global Crypto Adoption Index. Mexico processed over $64.7 billion in remittances in 2024 (Banco de México), and stablecoins are increasingly part of that infrastructure. The scale of these flows made formal regulatory frameworks inevitable.
The frameworks that arrived in 2025 and 2026 do not share a single model. Each jurisdiction approached stablecoin regulation from its own starting point: Brazil through the central banking lens, Argentina through securities regulation, Mexico through its 2018 fintech law, Colombia through an evolving digital asset framework. Understanding these differences is not a compliance exercise. It is a prerequisite for building payment infrastructure that will still function in two years.
Brazil: the Most Comprehensive Framework in the Region
In November 2025, the Banco Central do Brasil published three resolutions (519, 520, and 521) that took effect on February 2, 2026.
- BCB Resolution 519/2025 establishes a new licensing category for virtual asset service providers in Brazil (SPSAVs), defining three operational types -intermediaries, custodians, and brokers- and extending standard financial system obligations to all of them, including AML/CFT, cybersecurity, and client protection requirements.
- BCB Resolution 520/2025 regulates the authorization process for SPSAVs to operate, and introduces a grandfathering regime allowing entities already active in Brazil before February 2, 2026 to continue operating while their license application is being processed.
- Resolution 521 is the most consequential for stablecoin infrastructure: it amends existing FX and international capital regulations to formally include virtual asset transactions within Brazil's foreign exchange and cross-border capital framework.. Foreign firms serving Brazilian users must obtain local authorization or partner with a licensed entity by October 30, 2026.
In April 2026, the BCB published Resolution 561, which prohibits eFX providers from using virtual assets to settle cross-border obligations through the regulated eFX channel, effective October 1, 2026. The restriction targets the back-end settlement rail used by traditional remittance fintechs, not crypto-native operators. Entities authorized as VASPs under Resolution 521 (including those under the grandfathering regime) may continue using virtual assets to execute and settle international transfers.
The practical effect is that the compliance perimeter in Brazil is now explicit. Operations that were previously unregulated because stablecoins were not formally classified are now covered by FX rules. This creates compliance obligations, and also creates legal certainty for the first time.
Argentina: an Active Regulatory Moment
Argentina's regulatory framework for virtual assets is the product of several overlapping layers accumulated since 2024. Law 27,739 (March 2024) established the mandatory registration regime for Virtual Asset Service Providers (PSAVs) and appointed the Securities Nacional Commission (CNV) as primary regulator. CNV Resolution General 1058/2025 defined the operational rules for the registry, covering domestic platforms and foreign operators that actively target Argentine users. AML/CFT obligations fall under UIF Resolution 49/2024.
The CNV has also been building a parallel framework for tokenization. General resolution 1150/2026, published in June 2026, expanded the tokenization regime to cover virtually all securities eligible for automatic public offering authorization, and extended the regulatory sandbox for tokenized securities until December 31, 2027. The sandbox, which the CNV president described as part of a "Big Bang" package of reforms, allows fintechs, issuers, and market participants to operate and iterate on tokenization models under supervised conditions before full regulatory consolidation.
In April 2026, CNV Resolution General 1125/2026 formally recognized cryptocurrencies, including stablecoins, as part of the net worth calculation for qualified investor status, positioning digital assets within mainstream financial regulation rather than outside it.
One structural constraint remains: the BCRA continues to prohibit banks and regulated payment service providers from offering or facilitating crypto services. On/off-ramps and stablecoin access in Argentina operate through PSAVs rather than the banking system. There is no specific reserve or prudential regime for stablecoin issuers as of mid-2026, meaning operators rely on a legal opinion framework and their own contractual commitments.
Mexico: a First Mover Working Through Its Own Evolution
Mexico's 2018 Ley Fintech was the region's first comprehensive fintech law, but the GENIUS Act, Brazil's BCB framework, and MiCA have since overtaken it in specificity. The 2018 law did not establish a stablecoin issuance regime. Under its framework, peso-denominated stablecoins fall outside the virtual asset definition, and stablecoin issuance- where the issuer receives fiat and issues a pegged instrument to third parties- is treated as a reserved banking activity, Banco de México has to date authorized no virtual assets for commercial use by fintechs.
In May 2025, amendments introduced a a dedicated Digital Asset Custodian license with defined capital and audit requirements. In May 2026, Senator Alejandro Murat Hinojosa introduced legislation in the Senate to create a dedicated category, Activos Virtuales Estables (AVE), for peso-denominated stablecoins, explicitly modeled on the GENIUS Act. The bill had not been passed as of the date of this article.
Mexico's regulatory picture is one of constructive movement without yet comprehensive clarity. The market is large: over 1,000 fintechs, $64.7 billion in annual remittances, and one of the most sophisticated fintech ecosystems in the region. The legislative direction is clear, but the formal framework for peso-denominated stablecoin issuance at scale does not yet exist.
Colombia: a Framework in Formation
Colombia does not yet have a dedicated stablecoin regulatory framework. The Superintendencia Financiera de Colombia (SFC) launched crypto-related pilots through its regulatory sandbox (InnovaSFC) starting in 2021, and following those results published a draft circular in 2022 establishing conditions for financial entities to partner with virtual asset service providers, covering AML/CFT, custody, and operational risk. Entities operating virtual asset services must register with the UIAF and comply with transaction reporting and customer due diligence requirements.
As of mid-2026, the primary regulatory anchors for virtual asset operations in Colombia are the Organic Financial System Statute (which classifies public fund-raising as a reserved activity), Law 1480/2011 (the Consumer Statute, binding on all public-facing activity), and Bill 510/2025, currently in congressional debate, which would establish a formal PSAV registry and supervisory framework. Stablecoin issuers operate without a specific reserve or prudential regime, relying on their own legal framework and contractual commitments. A more comprehensive framework is expected to develop as the legislative process advances and regional standards mature.
What the Map Looks Like in 2026
The four markets are not converging on a single model, but they are converging on a common direction: formalization, mandatory registration of service providers, AML/CFT obligations aligned with FATF standards, and increasing integration of stablecoin flows into the financial supervision perimeter.
Brazil is furthest along, with an active enforcement timeline. Argentina has an active PSAV registration regime under the CNV and is rapidly formalizing tokenization, though banks remain structurally excluded and no specific prudential regime for stablecoin issuers exists yet. Mexico is in transition, with a legislative process underway but no formal stablecoin issuance rules yet in place. Colombia is working from a sandbox base, with formal frameworks likely to follow as the regional environment matures.
For operators building stablecoin payment infrastructure across the region, the compliance bar is rising in every jurisdiction. Operating under a credible regulatory framework is increasingly the condition for institutional counterparty access. The issuance infrastructure that supports local-currency stablecoins in this environment needs to be built to the standard these frameworks are establishing, not to the gray zone that preceded them.
Last updated: June 2026. Regulatory frameworks in this region change frequently. This content is provided for informational purposes only and does not constitute legal, regulatory, financial, or investment advice.
Frequently Asked Questions
Is stablecoin issuance regulated in Brazil?
Yes. BCB Resolutions 519, 520, and 521 (in force since February 2, 2026) establish a comprehensive framework for virtual asset service providers and classify stablecoin transactions as foreign exchange operations. Entities operating stablecoin services in Brazil must obtain BCB authorization as an SPSAV. Foreign firms serving Brazilian users face a deadline of October 30, 2026.
Can stablecoins be used for cross-border payments in Brazil?
Stablecoin transactions involving cross-border flows are classified as foreign exchange operations under Resolution 521 and are subject to FX reporting and AML requirements. Resolution 561 (April 2026) additionally prohibits eFX providers from using stablecoins in the back-end settlement of overseas remittances through the regulated eFX channel, effective October 1, 2026. Individuals can still buy, hold, and transfer stablecoins through authorized VASPs.
Does Argentina regulate stablecoin issuers directly?
Argentina's CNV operates a mandatory PSAV registration regime under Law 27,739 and CNV RG 1058/2025. There is no specific reserve or prudential regime for stablecoin issuers as of mid-2026. Banks remain prohibited from offering crypto services. The CNV's tokenization sandbox, extended to December 2027 under RG 1150/2026, covers tokenized securities, not stablecoin issuance directly.
What is Mexico's current framework for peso-denominated stablecoins?
Mexico's 2018 Fintech Law does not establish a specific stablecoin issuance regime. A legislative proposal introduced in 2026 (Activos Virtuales Estables) would create a dedicated framework modeled on the GENIUS Act, but had not been enacted as of the date of this article.
Does Colombia have stablecoin regulation?
Colombia does not have a dedicated stablecoin regulatory framework. The SFC operates a regulatory sandbox (InnovaSFC) and AML/CFT obligations under the UIAF apply. Bill 510/2025, currently in congressional debate, would establish a formal registry and supervisory framework for virtual asset service providers. A formal stablecoin issuance regime is not yet in place.