Stablecoins occupy a unique position in the regulatory landscape: unlike speculative crypto assets (whose securities vs. commodity classification is contested), stablecoins that maintain a fixed peg to fiat currency are unambiguously financial instruments — they function as electronic money, creating direct regulatory overlap with existing payment systems law, money transmission licensing, banking regulation, and monetary policy. This clarity of function has accelerated regulatory action on stablecoins compared to other crypto categories. By 2025, three major jurisdictions — the EU, Hong Kong, and the US — had either implemented or were finalizing comprehensive stablecoin-specific regulatory frameworks, fundamentally reshaping the competitive landscape between Tether (USDT), Circle (USDC), and newer entrants.
Why Stablecoins Are Different from Other Crypto
Regulatory urgency around stablecoins stems from three threat vectors that don’t apply to speculative tokens:
1. Bank-Run Risk (Systemic)
2. Payment System Risk
3. Monetary Policy Bypass
The GENIUS Act (US, 2025)
The Guiding and Establishing National Innovation for US Stablecoins (GENIUS) Act passed in 2025, establishing the first comprehensive US federal framework for “payment stablecoins.”
Key Provisions
Definition: Payment Stablecoin
The GENIUS Act applies to stablecoins:
- Designed for use as payment or settlement in commerce
- Maintaining redemption value of exactly $1 (or other fiat denomination)
- NOT algorithmic stablecoins (LUNA/UST type)
- NOT interest-bearing (USDC earns no yield; pass-through yield is different)
Reserve Requirements:
- 1:1 backing with high-quality liquid assets (HQLA)
- Approved assets: US dollar deposits; short-term US Treasury bills (≤90 days); Fed reverse repos; central bank reserves
- No commercial paper (which Tether historically used heavily), no corporate bonds, no loans, no crypto assets
- Daily public disclosure of reserve composition
- Monthly third-party attestation by registered accounting firm
Issuer Categories:
- Federal license (OCC-supervised): Stablecoin issuers with $10B+ in outstanding stablecoins must obtain a federal trust charter or national bank license. Supervised by OCC.
- State license: Issuers below $10B can obtain state money transmitter licenses (which 46 states currently issue). States with approved programs include New York (BitLicense + stablecoin supplement), Wyoming, Colorado.
- Foreign issuers: Foreign stablecoins may be accepted for use in the US if the foreign jurisdiction is deemed to have “comparable” regulatory oversight.
USDT (Tether) Implications:
Tether is a British Virgin Islands company. Under GENIUS Act foreign issuer provisions, USDT would need either (a) Tether to establish a US entity meeting GENIUS requirements, or (b) determination that BVI oversight is “comparable” (highly unlikely). The practical outcome: USDT may be restricted from US institutional use cases while remaining on global crypto exchanges. Circle’s USDC is positioned to dominate regulated US institutional markets.
Interest Prohibition:
GENIUS Act explicitly prohibits payment stablecoins from paying interest to holders. This prevents stablecoins from competing with bank deposits for savings (a significant bank lobbying concern). Note: This prohibition does NOT apply to DeFi protocols that earn yield through lending USDC — only to the stablecoin issuer itself paying interest.
MiCA: EU Electronic Money Token Rules
The EU’s Markets in Crypto Assets Regulation (MiCA), fully applicable from December 2024, includes specific treatment for stablecoins as “Electronic Money Tokens” (EMTs):
EMT Requirements
- 1:1 reserve requirement (euros for EUR-pegged EMTs, etc.)
- Reserve must be held in segregated accounts at EU credit institutions
- Redemption at par within 1 business day on demand
- Marketing restrictions: EMT issuers cannot pay yield to holders
- Volume caps: If an EMT reaches €5M in daily transactions, it triggers enhanced capital requirements
Significance: USDT Cannot Comply (As Issued)
Circle’s USDC: MiCA Compliant
MICA Implications for Stablecoin Landscape
- Regulated markets (EU, US GENIUS Act): Circle USDC dominant; PAYP PYUSD present; Tether excluded or restricted
- Unregulated/offshore markets: Tether USDT maintains dominance (80%+ of stablecoin volume remains on non-EU-regulated venues)
Hong Kong: Stablecoin Licensing
The Hong Kong Monetary Authority (HKMA) began licensing “fiat-referenced stablecoins” (FRS) in 2024–2025:
Key Requirements
- Reserve: 1:1 cash/HQLA backing; HK dollar reserves for HKD-pegged stablecoins
- Governance: Hong Kong-incorporated entity required; fit-and-proper requirements for directors
- Disclosure: Daily reserve attestation
- Redemption: 1 business day par redemption
Strategic Context
- Allowing licensed stablecoins, VASPs (crypto exchanges), and sophisticated investor crypto products
- Specific goal: Enable institutional crypto activity in HK while providing user protections
- Several issuers exploring HKD-pegged stablecoins specifically for Asian remittance/payment markets
Tether (USDT): Regulatory Exposure
USDT is the largest stablecoin ($120B+ as of 2025) and the most regulatory-exposed under new frameworks.
Historical reserve concerns:
- 2021: NYAG investigation; $18.5M settlement; Tether admitted reserves had NOT always been fully backed
- 2021: CFTC $41M fine for misrepresenting reserve composition
- 2021–2023: Gradual transparency improvement; BDO audits introduced; reserve mix shifted from commercial paper to T-bills
Current reserve composition (2024–2025):
- ~80–85% US Treasury bills
- ~5–8% overnight reverse repos
- ~4–6% Bitcoin (new addition, controversial)
- ~2–4% precious metals
- Remainder: money market funds, cash
Regulatory jurisdictions claimed: Tether is registered in El Salvador (fintech license), with operations through BVI. Neither jurisdiction provides the credible regulatory oversight required by GENIUS Act or MiCA.
Bull case for USDT survival: Tether’s ~$100B+/year in T-bill interest income on its reserve makes it one of the most profitable financial entities in the world relative to headcount (~100 employees). It has capital to achieve compliance in multiple jurisdictions if it chooses to.
Circle (USDC): Regulatory Positioning
Circle is strategically positioned as the “compliant stablecoin”:
- MiCA EMT license in France (USDC + EURC compliant in EU)
- NYDFS virtual currency license
- Pursuing OCC national trust charter under GENIUS Act framework
- No major regulatory enforcement actions
- IPO filing (2024/2025) requires audited financial statements
- Reserve: exclusively short-term US Treasuries + cash deposits at major banks
Revenue model: Circle earns interest on USDC reserves (primarily T-bill income). At $40B USDC supply and ~5% T-bill rates, Circle earns ~$2B/year in interest income. Unlike Tether ($100B supply), Circle’s scale is smaller but its institutional credibility is higher.
PayPal USD (PYUSD): Regulated from Day One
PayPal’s PYUSD (issued by Paxos Trust Company) launched in August 2023 as a MiCA-preparation move:
- Issued by Paxos (New York trust charter; same issuer as Binance USD before NYDFS shutdown)
- Full 1:1 reserve (T-bills + cash)
- PayPal’s payment network distribution advantage
- Solana deployment in addition to Ethereum (for lower-fee payment use cases)
- Regulatory significance: First major fintech company with hundreds of millions of users launching a regulated stablecoin, representing the convergence of traditional fintech and crypto
How to Use Compliant Stablecoins
Purchasing USDC: Available on Coinbase (compliant US/EU), Kraken, and most regulated exchanges.
Self-custody: USDC and USDT held in self-custody wallets are not affected by issuer regulatory status for individual holders (issuer regulation affects exchanges, not wallet custody).
DeFi use: MiCA and GENIUS Act requirements apply to issuers, not to DeFi protocols. Users can continue using USDC/USDT in Aave, Compound, Curve regardless of regulatory developments at the issuer level.
Related Terms
Sources
Catalini, C., & de Gortari, A. (2021). On the Economic Design of Stablecoins. SSRN Working Paper.
Gorton, G., & Zhang, J. (2023). Taming Wildcat Stablecoins. University of Chicago Law Review, 90(3), pp. 909–956.
Mizrahi, A. (2023). A Regulatory Framework for a Risk-Based Approach to Stablecoin Oversight. Harvard Business Law Review, 13(2), pp. 245–304.
Cecchetti, S.G., & Schoenholtz, K.L. (2022). Finance and the Common Good: Stablecoins, Central Bank Digital Currencies, and the Future of Money. CEPR Policy Insight 121.
Aramonte, S., Huang, W., & Schrimpf, A. (2021). DeFi Risks and the Decentralization Illusion. BIS Quarterly Review, December 2021.