Comparison of Stablecoin Reserve & Buffer
Published 7/1/2026, 12:33:37 AM
The UK is not systematically undercutting the EU’s Markets in Crypto-Assets (MiCA) regulation with lower buffers; instead, it has adopted a principle-based approach that is more flexible for standard issuers but significantly more restrictive for those deemed "systemic." While the UK has reduced some initial capital requirements to align with international standards, its liquidity mandates for major issuers are among the most stringent globally.
Comparison of Stablecoin Reserve & Buffer Requirements
| Metric | EU MiCA (Regulation 2023/1114) | UK FCA/BoE Framework (Finalized June 2026) |
|---|---|---|
| Bank Deposit Floor | 30%–60% mandatory at EU credit institutions. | No fixed floor; must meet "Backing Asset Requirement" (BACR) based on redemptions. |
| Systemic Reserves | Prescriptive: Short-dated, investment-grade instruments. | 70% UK Gilts + 30% unremunerated BoE deposits [Source: https://www.linkedin.com/posts/glennhandley_the-bank-of-england-just-drew-a-line-stablecoins-activity-7475522054025453568-h_Ml]. |
| Capital Buffer | Higher of €350k or 2%–3% of average reserves. | £350k PMR + 2% K-Factor (reduced from initial 1% total value proposal). |
| Yield to Holders | Strictly prohibited (Article 50). | Permitted specifically for Money Market Fund (MMF) tokens. |
| Foreign Currency | Hard caps: €200M/day or 1M tx/day for non-EU EMTs. | No hard caps; uses disclosure and risk-warning requirements instead. |
Key Regulatory Divergences
1. Systemic vs. Non-Systemic Bifurcation
The UK regime creates a sharp divide. For "systemic" stablecoins (those with high transaction volumes or interconnectedness), the Bank of England requires 30% of backing assets to be held as unremunerated deposits at the central bank [Source: https://www.linkedin.com/posts/glennhandley_the-bank-of-england-just-drew-a-line-stablecoins-activity-7475522054025453568-h_Ml]. This is arguably more restrictive than MiCA, as these deposits earn zero interest, effectively acting as a "tax" on the issuer's profitability to ensure absolute liquidity.
2. Capital Requirement "Dilution"
The UK did move to lower its capital requirements during the consultation phase. Initially, the FCA proposed a flat 1% of the total value of issued stablecoins. In the finalized June 2026 rules, this was replaced with a 2% K-Factor based on average circulation [Note: not independently confirmed]. While this represents a reduction from the UK's original proposal, it brings the UK into closer alignment with MiCA’s 2% baseline for non-significant tokens, rather than undercutting it.
3. Liquidity and Redemption
- EU MiCA: Mandates a strict 30% (standard) to 60% (significant) floor for reserves held as bank deposits [Source: https://www.fca.org.uk/publications/consultation-papers/cp25-14-stablecoin-issuance-cryptoasset-custody].
- UK: Requires a minimum 5% On-Demand Bank Deposit (ODDR) but forces issuers to calculate a "Core Backing Asset Requirement" (BACR) that must cover peak estimated daily redemptions plus a variance buffer. This allows issuers more flexibility in how they hold the remaining 95% of assets compared to the EU's rigid bank-deposit mandate.
Strategic Positioning
The UK's primary competitive advantage is not "lower buffers" but the absence of transactional caps on foreign-currency stablecoins. MiCA imposes a cap of €200 million per day on non-Euro stablecoins used as a means of exchange to protect the Euro's monetary sovereignty. The UK has opted not to implement such caps, positioning itself as a more attractive hub for USD-denominated stablecoins and institutional MMF tokens that offer yield—a practice strictly forbidden under MiCA Article 50.
Conclusion: The UK is not engaging in a "race to the bottom" on safety. While it offers more flexibility for non-systemic issuers and permits yield-bearing structures, its requirements for systemic players (30% unremunerated central bank deposits) are more punitive than the EU's bank-deposit model. The UK's "undercut" is focused on market access and product innovation rather than lowering prudential safeguards.