The simple version

The minimum payment on a credit card is not the lowest cost. It is the slowest. Pay only the minimum on a typical balance and you can spend more than two decades paying off something you bought today. Most of every dollar you send in for the first several years goes to interest, not to the balance.

The reason is built into the formula. The minimum payment shrinks as your balance shrinks. The interest does not shrink at the same pace. Progress slows as the years pass, and the balance hangs around.

This piece is the Real Cost companion to our May 2 article on the $1.3 trillion in U.S. credit card balances. The May 2 piece laid out the headline. This one shows the math the headline implies for one household.

The numbers

Three inputs, all from primary sources, all reproducible. Starting balance: $6,500. That is close to the average revolving balance the major credit bureaus currently report. APR: 21.52%. That is the figure the Federal Reserve's G.19 Consumer Credit release, published May 7, 2026, reports as the average APR on accounts assessed interest in the first quarter of 2026. Minimum payment formula: the greater of (a) 1% of the balance plus the month's interest, or (b) a $25 floor. That formula is documented as the most common structure in the Consumer Financial Protection Bureau's 2025 Consumer Credit Card Market Report.

Run that forward, month by month, holding the APR constant.

• Months to clear the balance: 256, or about 21 years and 4 months.
• Total paid across those 256 months: $17,101.
• Total interest paid: $10,601. That is 63% more than the original $6,500 balance.
• First month's minimum payment: $181.57. That number shrinks every month as the balance falls.

The Real Cost lens

Same balance. Same APR. Same first-month payment of $181.57. The only thing that changes: instead of letting the payment shrink with the balance, hold it constant at $181.57 every month.

• Months to clear: 58, or 4 years and 10 months.
• Total paid: $10,494.
• Total interest paid: $3,994.

What this means

Two observations follow from this math, neither of which is a recommendation.

First: the line on a statement labeled “minimum payment due” is not a neutral suggestion. It is the lowest amount that keeps the account current, calculated by a formula that is designed to keep balances alive across decades at typical APRs. Knowing what that number does, mathematically, is different from knowing what it is.

Second: turning a card balance into a Real Cost number is a 60-second exercise. Pull up any online amortization calculator. Plug in the balance and the APR from the latest statement. Set the payment to the current minimum, read the years-to-payoff figure. Repeat with the current minimum held constant. The gap between those two numbers is the cost of letting the payment shrink, denominated in years and dollars.

What this is NOT

This is not advice. ClearMoneySchool does not recommend a payment strategy, a card, a balance-transfer offer, a debt consolidation product, a credit counseling service, or any specific action with anyone's money. Every household's income, cash flow, other debts, and goals are different, and the right answer depends on those specifics. This piece decodes one number on one type of statement. It does not tell anyone what to do with it.

Education only. ClearMoneySchool does not provide individualized advice.

Sources

• Federal Reserve Board, G.19 Consumer Credit Release (May 7, 2026 release; figure is for accounts assessed interest, Q1 2026): https://www.federalreserve.gov/releases/g19/current/
• Consumer Financial Protection Bureau, The Consumer Credit Card Market 2025 (documents the 1%-of-balance-plus-interest minimum payment structure as the most common across major issuers): https://www.consumerfinance.gov/data-research/research-reports/the-consumer-credit-card-market-2025/
• Federal Reserve Bank of New York, Quarterly Report on Household Debt and Credit, Q4 2025 (context for typical revolving balances): https://www.newyorkfed.org/microeconomics/hhdc
• Prior ClearMoneySchool reference: /market-pulse/credit-card-debt-1-3-trillion-minimum-payment-trap