Trump calls for 10% cap on credit card interest rates. What's average?

President Donald Trump has called for a 10% cap on credit card interest rates effective Jan. 20, a proposal that has not been enacted by Congress and for which enforcement details are unclear. Average card APRs cited in the article range from 19.65% (Bankrate, week of Jan. 7) to 21.39% (Federal Reserve, Q3 2025), and bipartisan bills introduced in 2025 (Sanders/Hawley in the Senate; Ocasio-Cortez/Luna in the House) would implement a similar 10% cap through 2030 but have seen no further action. Markets reacted negatively to the proposal, with U.S. and UK-listed lenders falling as a cap would reduce a major revenue stream for issuers, while analysts warn such caps could constrain bank profits and push consumers toward alternative, potentially more expensive, non-bank lenders.

Analysis

Market structure: A hard 10% APR cap vs current ~20–21% averages implies an immediate ~50% haircut to headline card yields on revolvers, hitting pure-play card lenders hardest (Capital One COF, Synchrony SYF, Discover DFS). Diversified banks (JPM, BAC) will see smaller but non-trivial NII pressure—estimate 10–20% NII hit for diversified lenders vs 40–70% for card specialists depending on mix—forcing fee increases, underwriting pullbacks or securitization to replace lost yield.

Risk assessment: Tail risks include an executive-branch enforcement attempt or a narrowly drafted temporary cap that creates legal uncertainty and a 10–20% equity reprice across financials within days; legislative passage is low-probability but would crystallize multi-quarter earnings shocks. Hidden second-order effects: rapid underwriting tightening will reduce unsecured credit supply, push borrowers to non-bank lenders (pawn, fintech BNPL, payday) and widen ABS spreads; key catalysts are committee hearings, key swing-vote statements, and next 90 days of campaign headlines.

Trade implications: Short concentrated card issuers and their equity lines via 1–3 month put spreads; long payment networks (MA, V) and prime retail banks with diversified fee income. Buy protection on bank credit (5y CDS on COF/DFS or CDX Financial tranche) and reduce exposure to consumer discretionary triple-levered plays; expect tactical 5–12 week volatility followed by medium-term repricing over 3–12 months.

Contrarian angle: The market may overprice feasibility—Congress historically resists sweeping APR caps and courts could block executive enforcement, so a disciplined re-entry after initial headline-driven sell-off is likely profitable. Historical parallels (CARD Act, Durbin) show banks adapt via fees and product redesign within 6–18 months; consider mean-reversion trades that fade first-mover panic while keeping downside protection for regulatory regime change.

Key Decisions for Investors

• Establish a 2–3% portfolio short via 3-month put spreads on Capital One (COF) and Synchrony (SYF): buy ATM puts and finance with 10–15% OTM puts to limit cost; target execution within 1–10 trading days to capture headline-induced vol spike.
• Overweight Mastercard (MA) and Visa (V) by 1–2% combined (long equity or 6–9 month call spreads) as defensive plays on network fee resilience; if consumer spending drops >3% q/q, trim to neutral.
• Buy 5-year CDS protection on COF and DFS (or a 1–2% notional CDX Financial package) sized to cover expected 20–40% equity drawdowns over 3–12 months; increase protection if bill is scheduled for a committee vote within 30 days.
• Implement a pair trade: short COF (1.5%) and long BAC (0.75%) for 3–12 months—COF is more exposed to APR compression while BAC benefits from diversified net interest and deposit franchise; close or rebalance if COF underperforms by >30% or regulatory clarity arrives (bill withdrawn/passed).