Commentary: Trump is demanding a 10% cap on credit card interest. Here's why that's a lousy idea

President Trump urged a one-year 10% cap on credit-card interest—an action he cannot enact unilaterally and which would require Congressional legislation—targeting a $1.21 trillion U.S. card market that produced about $120 billion in interest income and $162 billion in fees. With average card APRs near 25.2% and the prime rate at roughly 6.75%, analysts say a 10% cap could make mainstream card lending unprofitable, prompt issuers to ration credit and lower limits for low-FICO consumers, and push borrowers toward higher-cost, less-regulated alternatives, while also pressuring merchant swipe-fee economics and rewards programs.

Analysis

Market structure: A hard cap (10%–15%) would transfer ~>$48B–$120B of issuer economics away from banks into either lower issuer profits or alternate fee structures (annual fees, merchant surcharges). Winners: large merchants (AMZN) with negotiating leverage, and non-bank lenders/BNPL/payday lenders that can charge >100% effective APRs; losers: card-centric lenders (COF, SYF, regional banks) and small merchants. Pricing power shifts from issuers to merchants and alternative lenders; card issuance economics would push issuers to shrink exposure to sub‑prime/mid‑FICO cohorts and cut credit lines within 3–12 months.

Risk assessment: Tail risks include Congressional enactment of a 10% cap (low probability pre-legislative build but high impact) or fragmented state responses creating litigation and operational chaos—both would spike unsecured consumer ABS spreads by 200–400bps and raise delinquencies over 6–18 months. Immediate volatility: bank/card stocks and ABS repricing in days–weeks; structural credit rationing emerges in 3–9 months. Hidden dependency: interchange revenue adjustments and merchant behavior (surcharges, acceptance) drive real consumer pain more than headline APR math.

Trade implications: Tactical plays: underweight card-heavy bank equities and buy protection on COF/SYF (3‑month 5–10% OTM put spreads); overweight AMZN and defensive grocery COST (1–2% portfolio tilts) for 3–12 months. Use options to buy tail insurance on a regulatory shock (buy cheap 6–12 month puts on a bank ETF like KBE/KRE). Rotate out of unsecured consumer ABS and into secured consumer credit or high‑quality IG for 6–18 months.

Contrarian angles: Consensus overestimates permanent demand destruction; issuers can claw back economics via higher annual fees, reduced rewards, and targeted underwriting (preserving profits on prime cohorts). Historical parallels: CARD Act and post‑Marquette shifts show industry adapts via product redesign and pricing, not wholesale collapse. If markets oversell bank credit risk on headlines, long-dated debt of high-quality banks (JPM senior 5–7yr) could be a contrarian buy after a 100–200bp spread widening.

Key Decisions for Investors

• Establish a 1.5% overweight in COST (Costco) vs SPX for 3–12 months to capture defensive consumer spend and relative insulation from swipe-fee shocks; trim discretionary retail exposure by 1–2%.
• Establish a 1–1.5% long position in AMZN for 6–12 months financed by a 1% short on small/mid-cap merchant retail names (or an ETF like XRT) to play merchant concentration winners and losers as interchange economics shift.
• Hedge consumer-credit exposure by buying 3-month 5–10% OTM put spreads on COF and SYF equal to 1–2% notional of portfolio to protect against legislative or rapid credit rationing risk; if a House/Senate bill with a 10%–15% cap is marked up, widen protection to 3% notional within 7 days.
• Reduce exposure to unsecured consumer ABS and increase allocation to high-quality IG corporates by 3–5% of fixed-income sleeve for 6–18 months; target IG duration 4–7 years to capture potential spread tightening if panic recedes.
• If a bill text explicitly applies the cap to 'all balances' (not just purchases) or moves to committee vote within 30–60 days, initiate a tactical 0.5–1% short of COF equity or buy additional 6–12 month puts—this is the binary catalyst that raises downside >25% for card-centric issuers.