Why Prohibiting Interest-Bearing Stablecoins Fails to Protect Banks

The White House CEA found that banning interest on stablecoins would only raise bank lending capacity by ~0.02% (~$2.1B) while imposing ~$800M in consumer welfare costs; even an extreme 6x expansion of stablecoins would at most boost bank lending by 6.7% (~$129B). The report concludes stablecoin yields pose negligible risk to bank deposits, notes most stablecoin reserves stay within the banking system, and found no welfare-positive case for a yield ban. Coinbase executives publicly backed the findings, while some bank insiders remain concerned about reserve composition and potential outflows. The study strengthens the policy case for the CLARITY Act ahead of an expected April markup and May Senate vote.

Analysis

Yield-bearing stablecoins rewire the short-end liability stack by creating a high-rate, frictionless alternative to traditional retail deposits. Even modest retail migration (low-single-digit share of checking/savings) raises the marginal cost of funding for banks because those balances are far more rate-sensitive and easier to move programmatically than core deposits, implying NIM pressure concentrated at regional and community banks over the next 6–18 months.

Custody and payments infrastructures are the asymmetric beneficiaries: firms that custody reserves or route tokenized payments can monetize higher fee-per-transaction volumes and custody spreads without moving rate-bearing risk onto their balance sheets. Conversely, banks that derive most revenue from interest income (vs. fee income) face the largest blow to earnings quality; they will either pay up on deposits, shorten asset durations, or increase wholesale funding — each option compresses returns or raises balance-sheet risk.

Regulatory and market catalysts can flip the narrative quickly. A legislative clampdown or a shift in reserve composition away from bank deposits into Treasury/repo instruments would materially accelerate funding stress for exposed lenders within months. Tail risk remains a concentrated runs scenario at small banks if stablecoin reserve strategies become the dominant on/off ramp for large retail flows, forcing supervisory interventions and creating replay risks for contingent liquidity facilities.

Key Decisions for Investors

• Long custody/asset-servicing banks (e.g., BNY Mellon - BNY, State Street - STT): buy 6–12 month call spreads to target a 15–30% upside if tokenized flows accelerate; hedge with a 25% position size cap. Rationale: fee capture from custody and settlement is durable; risk is regulatory pushback — limit loss to option premium.
• Long payments processors with heavy wallet/API exposure (e.g., PayPal - PYPL, Block - SQ): accumulate equity or 3–9 month calls sized 3–5% of book. Upside if stablecoin rails drive incremental payment volume; downside if Congress tightens rules — protect with 20% trailing stop or sell half into 20% move.
• Short regional bank exposure via KRE (SPDR S&P Regional Banking ETF) or targeted puts on interest-income-dependent banks (e.g., TFC, PNC): size 3–5% of portfolio, target 15–25% downside over 6–12 months. Hedge by buying 2–5 year Treasury futures to offset rate-driven NII gains.
• Event hedge: buy out-of-the-money puts on COIN (or equivalent liquid crypto-exchange exposure) 4–9 months out to protect against adverse regulatory headlines that would compress crypto valuations; keep position small as insurance (1–2% of book).