IMF Warns Fragmented Global Rules Could Undermine Stablecoin Market Stability

• The stablecoin market is growing rapidly, with USDT and USDC dominating and the total value over US$300B (AU$462B).
• Regulatory frameworks across major economies remain fragmented, creating operational and cross-border challenges.
• The IMF urges strong macroeconomic governance, robust institutions, and international coordination to mitigate financial risks.

The International Monetary Fund (IMF) has issued a new report warning that the rapid expansion of the stablecoin market is outpacing regulatory frameworks worldwide, raising concerns over potential systemic risks. In its Understanding Stablecoins report, the IMF analysed the approaches taken by major economies, including the United States, the United Kingdom, Japan and the European Union, finding that regulations remain inconsistent and fragmented.

While emerging regulations could reduce risks to macrofinancial stability, the IMF highlighted that differing rules and issuance practices across jurisdictions could hinder the efficiency and interoperability of stablecoins. The fund stated that the proliferation of stablecoins across multiple blockchains and exchanges introduces operational challenges and regulatory discrepancies among countries.

Tether’s USDT and Circle’s USDC, the two largest stablecoins, are predominantly backed by short-term US Treasuries and bank deposits, with Tether additionally holding around 5% of its reserves in Bitcoin. 

Forty percent of USDC’s reserves are in US Treasuries, while 75% of USDT’s reserves are similarly invested. The total stablecoin market, overwhelmingly denominated in US dollars, exceeds US$300 billion (AU$462 billion) as of December 2025, with a few issuers offering coins in euros or yen.

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Aligning Regulations Globally

The IMF also cautioned that foreign currency-denominated stablecoins could lead to currency substitution, weakening the monetary sovereignty of certain countries. Stablecoins have the capacity to reach citizens rapidly through smartphones and online platforms, reducing central banks’ control over domestic liquidity and interest rates. 

In regions such as Africa, the Middle East, Latin America and the Caribbean, stablecoin usage is growing relative to foreign exchange deposits that underpin monetary policy.

To safeguard financial stability, the IMF recommended that countries maintain strong macroeconomic policies and robust institutions as the primary line of defence, while coordinating internationally to address cross-border risks. Without greater alignment between regulatory frameworks, the fund warned that the expanding stablecoin market could amplify systemic vulnerabilities and operational inefficiencies worldwide.

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