Inside the numbers: Credit card interest rates are high

President Donald Trump revived a campaign pledge to impose a one-year cap of 10% on credit card interest rates, a policy he says could save Americans tens of billions of dollars. The proposal prompted immediate opposition from the credit-card and banking industry, posing downside risks to card issuers' net interest margins and profitability if the measure gains regulatory traction or alters pricing expectations.

Analysis

Market structure: A 1-year, 10% cap on credit-card APRs is an acute revenue shock to card-heavy issuers (Capital One, Discover, American Express) because average APRs (~16–20%) would be mechanically cut by ~6–10 percentage points, implying a potential 10–30% EPS erosion for pure-play card lenders over 12 months if volumes stay constant. Consumers and substitutes (BNPL, debit, deposit growth) are clear beneficiaries short-term; banks will try to recoup via higher fees/annual charges, tightened underwriting, or shifting balances off-card to loans.

Risk assessment: Immediate (days) — equity vol in financials will spike and ABS spreads widen; short-term (weeks–months) — legislative noise, hearings, and COPA/industry lobbying determine passage probability; long-term (quarters–years) — if enacted, expect NIM pressure (10–40 bps systemwide; 100–200 bps on card books for specialists) and higher credit-selection tightening. Tail risks include retroactive application, judicial upsets, or a broad credit contraction that reduces consumer spending and retail earnings.

Trade implications: Short concentrated card issuers (COF, DFS, AXP) via directional puts or CDS; pair these vs. long diversified banks (JPM, BAC) and payment networks (V, MA) which are more insulated and may pick up volume/fees. Options and ABS hedges are preferred — buy 3–6 month put spreads on card issuers, hedge with long ABS senior tranches selectively after spread dislocations.

Contrarian angles: The market may overstate permanent damage — post-CARD Act (2009) banks recovered via fees and product redesign; if bill is limited to new accounts or non-retroactive, downside is muted. Watch regulatory text (retroactivity, exemptions for rewards cards) — if >50% of language carves out existing contracts, short positions should be trimmed quickly.

Key Decisions for Investors

• Establish a 2–3% net short position in card-focused issuers: buy 3-month put spreads on COF and DFS (allocate 60/40), sizing to 2–3% of fund NAV; hedge tail risk by selling a portion (25%) of puts if the bill fails to gain traction in 30 days.
• Initiate a 1.5–2% long trade in payment networks: buy 3–6 month V and MA (equal weight) as a defensive/relative-value play — these should gain market share if banks push fees to networks; trim if bill language includes network fee caps.
• Buy protection on consumer ABS and bank credit: allocate 1–1.5% notional to 1–3 year protection via CDS on COF or CDX.HY if ABS tranche spreads widen >75 bps from current levels, and increase exposure if senior ABS spreads widen >100 bps.
• Reduce cyclical consumer exposure by 2–4%: shift into staples/utilities (e.g., XLP/XLU) over next 30 days; if bill reaches House with >100 cosponsors or Senate shows signs of cloture, accelerate reallocation to 4% and increase shorts on card issuers to 4–5%.