Credit card debt at minimum payments is one of the most expensive financial situations in personal finance. A $5,000 balance at 22% APR paid only at the minimum (typically 1% of balance plus interest, with a $25 floor) takes about 22 years to pay off and costs roughly $7,200 in interest. The danger is not dramatic; it is slow, quiet, and compounding.
How minimum payments are structured. Most major card issuers calculate the minimum as 1% of the principal balance plus the month's accrued interest, with a floor (commonly $25 or $35). The Credit CARD Act of 2009 requires issuers to print on every statement how long it will take to pay off the balance at the minimum and how much you will pay in total interest. Look at this disclosure on your next statement; the numbers are designed to shock you into paying more.
Concrete payoff math. $3,000 at 22% APR with minimum payments takes 14 years and costs $4,300 in interest. $10,000 at 22% APR takes 30+ years and costs $20,000+ in interest. $25,000 at 24% APR takes a lifetime; you can literally pay minimums forever and never reach zero on a high enough balance because the minimum barely exceeds the monthly interest.
The negative amortization risk. Some retail cards (Comenity, Synchrony) and store cards have minimum payments structured so that for the first several months on a high balance, the minimum payment does not even cover the month's interest. The balance grows even though you are making the required payment. This is why the CFPB warns against treating minimums as a real payoff strategy.
Credit score impact. Making the minimum on time keeps you out of late-payment territory, which is good for your score. But high utilization (the percentage of your credit limit you are using) holds your score down. A $5,000 balance on a $5,500 limit is 91% utilization; this alone can suppress your score by 50-80 points even with on-time payments.
What to do. Pay double the minimum at minimum. Doubling a $100 minimum on a $5,000 balance at 22% cuts the payoff from 22 years to about 7 years and saves more than $5,000 in interest. If you cannot double the minimum, look at a hardship program from the issuer, a balance transfer card, or a debt management plan. Any of those three is better than indefinitely paying minimums.
The psychological trap. Minimum payments are designed to feel manageable. The card issuer wants you in the relationship for decades because each month you keep the balance is another month they earn interest. The strategy is profitable for them and quietly catastrophic for you.