Lesson 5 — Regulatory frameworks: MiCA, NYDFS, MAS, FSMA

**MiCA — Markets in Crypto-Assets Regulation (EU).** MiCA's stablecoin provisions came into force on 30 June 2024 (Title III for asset-referenced tokens and e-money tokens, ahead of the broader Title IV/V/VI which applied 30 December 2024). MiCA distinguishes 'asset-referenced tokens' (ARTs — backed by a basket of assets, currencies, or commodities) from 'e-money tokens' (EMTs — backed by a single fiat currency, structurally most fiat-backed stablecoins). EMT issuers must be authorized as either a credit institution or an e-money institution, must hold reserves segregated from the issuer's other assets, must guarantee redemption at par at any time, and face concentration limits on reserve composition. Significant EMTs (those exceeding usage thresholds) face additional prudential requirements including capital buffers and supervised liquidity management. MiCA also effectively prohibits no-collateral algorithmic stablecoins from being offered to EU retail users.

**NYDFS — New York State Department of Financial Services.** NYDFS has been the most active US state regulator on stablecoins since at least 2018. New York's BitLicense and Trust Charter regimes have produced the framework under which Paxos (USDP, formerly BUSD) and Gemini Dollar (GUSD) operate. NYDFS requires monthly attestations, full segregation of reserves at qualified custodians, daily reconciliations, and direct supervisory authority including the power to compel redemptions. The 2023 NYDFS action against Paxos's issuance of BUSD (binance-branded stablecoin) — ordering issuance to cease — demonstrated that the framework has real enforcement teeth. NYDFS-supervised stablecoins are generally considered the closest US analog to MiCA's EMT regime.

**MAS PS Act — Monetary Authority of Singapore.** Singapore's Payment Services Act framework was extended in 2023 with specific stablecoin provisions. MAS distinguishes 'single-currency stablecoins' (the operational equivalent of MiCA EMTs) from other digital-payment tokens. Single-currency stablecoin issuers must hold reserves in low-risk high-quality liquid assets, undergo independent attestations, and guarantee par redemption within five business days. MAS also requires issuers to publish 'whitepapers' meeting specific content requirements. The Singapore framework is notable for explicit reserve-composition rules and its 'gating' mechanism: only issuers holding a Major Payment Institution license can market a regulated stablecoin to retail customers in Singapore.

**UK FSMA — Financial Services and Markets Act stablecoin framework.** The UK's approach has evolved more slowly than the EU's. The Financial Services and Markets Act 2023 brought 'fiat-backed stablecoins' into the regulatory perimeter when used as payment instruments, with secondary legislation and FCA / Bank of England rules building out over 2024–2026. The headline requirements are: FCA authorization for stablecoin issuers, reserve backing in high-quality liquid assets, redemption guarantees, and a Bank of England 'systemic stablecoin' designation for large issuers (analogous to MiCA's significant EMT category). As of mid-2026 the regime is partially in force; full implementation including the systemic stablecoin oversight is still phasing in.

**Common patterns across the four regimes.** Three convergent requirements have emerged. First: reserve composition restrictions favouring cash and high-quality liquid assets (typically short-dated government securities) over riskier instruments. Second: redemption rights — par redemption guarantees with maximum time windows. Third: prudential supervision — the regulators are taking direct supervisory authority over issuers, including the power to compel cessation. Where the regimes still differ: cross-border passporting (MiCA allows EU-wide passporting after authorization in one member state; the other regimes do not), reserve attestation cadence (monthly is the convergent norm), and how 'systemically important' issuers are designated and supervised.

**Effective prohibitions.** All four regimes effectively prohibit retail offering of no-collateral algorithmic stablecoins. They differ on partially-collateralized hybrids: MiCA is the most restrictive (the categorical distinction between EMTs and ARTs leaves little room), NYDFS in practice has not licensed any partial-collateral design, MAS has not addressed the category directly, and the UK is still finalizing its position. The post-Terra regulatory consensus is unambiguous on the core question: stablecoins offered to retail users must be backed by actual reserves.

**What changes for users in different jurisdictions.** EU users will increasingly see only MiCA-compliant EMTs (USDC has obtained the relevant authorizations; USDT's status has been more complex, with some EU exchanges delisting it). US users without state nexus to NYDFS may continue to use stablecoins issued under other regimes, but federal frameworks (the Clarity for Payment Stablecoins Act, the Lummis-Gillibrand Payment Stablecoin Act, and various successors) are progressing through Congress. Singapore retail users see a narrower set of MAS-licensed stablecoins. UK users see the FCA's approved list, currently small and growing. The cross-jurisdictional fragmentation is real — issuers increasingly maintain different products for different regions.