Why Credit Card Interest Rates Are So High: Itamar Drechsler on Odd Lots

The Credit Card Revenue Puzzle

• 💡 Credit card banks have significantly higher returns on assets (3-4%) compared to traditional banks (1-1.2%), largely due to charging high interest rates.
• 💳 The revenue for credit card issuers comes from two main sources: swipe fees (interchange fees) and interest on revolving balances.
• 🎯 Interchange fees, where Visa and Mastercard take a cut and the majority goes to the issuing bank, are a significant revenue stream, often passed through as rewards.

Understanding Revolving Balances and Interest Rates

• 📊 Approximately 60% of credit card users revolve their balances, meaning they don't pay off their debt within the grace period and incur interest charges.
• 💰 The average interest rate on these revolving balances is a striking 23%, far exceeding typical bond yields or even high-yield corporate bond spreads.
• 📉 While default rates are a factor (around 5.75% on average), they do not account for the majority of the high interest rates charged.

The Role of Rewards and Operating Expenses

• 🎁 The vast majority of interchange fees (around 85%) are passed on to consumers as rewards, creating a strong network effect that keeps users within a particular card ecosystem.
• 📈 Operating expenses, particularly marketing and advertising, are a substantial cost for credit card companies, contributing significantly to the overall rates charged.
• 📢 Despite the high marketing spend, consumers show surprisingly low sensitivity to interest rate changes, making marketing an effective, albeit expensive, customer acquisition strategy.

Unsecured Lending and Market Dynamics

• 🔒 Credit cards represent unsecured lending, unlike secured loans like mortgages or car payments, which explains some of the higher rates.
• 🏦 Personal lines of credit, offered by the same companies, are often substantially cheaper and less marketed, yet are used by some to consolidate credit card debt.
• 📉 Competition from fintech and Buy Now Pay Later (BNPL) services has not significantly driven down credit card rates, as these new entrants also face high operating and acquisition costs.

Consumer Behavior and Policy Implications

• ⚠️ Consumers are often not rate-sensitive, meaning they don't actively seek out lower-rate options, which allows companies to maintain high interest rates and marketing spend.
• 📉 The high rates on credit cards are not a primary channel for monetary policy transmission, as consumers are largely insensitive to small changes in benchmark rates.
• 📈 While credit card companies are highly profitable, their business model relies heavily on marketing effectiveness rather than solely on interest rate competition.