Why minimum payments are designed the way they are
A credit card minimum is deliberately calibrated to sit just above the interest charge. The most common US formula is 1% of the balance plus the month's accrued interest, with a floor of $25 to $35.
That structure guarantees the balance falls — but barely. On a $6,000 balance at 22.9% APR, the first minimum is about $175. Roughly $115 of that is interest. Only $60 reduces what you owe.
Follow that schedule exactly and the card takes about 250 months to clear — nearly 21 years — costing roughly $10,362 in interest. You would repay about $16,362 on $6,000 borrowed, or 2.7 times the original balance.
The shrinking payment problem
The trap is not really the size of the first minimum. It is that the minimum falls as the balance falls. Each month you pay slightly less than the month before, which stretches the tail of the debt out for years.
Fix the payment instead and the arithmetic transforms. Paying a flat $250 a month — only $75 more than the initial minimum — clears the same $6,000 in 33 months rather than 250, and costs about $2,101 in interest instead of $10,362. That is roughly $8,261 saved and eighteen years avoided, for $75 a month at the start.
If you take one thing from this page: whatever you can afford this month, keep paying that same amount every month until the balance is zero. Never let the payment shrink alongside the balance.
Flat-percentage minimums can never pay off
Some issuers use a flat percentage of the balance with no interest component — commonly 2%. On a high-APR card this creates a genuinely alarming situation.
At 22.9% APR, the monthly interest rate is about 1.91%. A 2% minimum payment therefore leaves roughly 0.09% of the balance going to principal. The debt shrinks so slowly it is effectively permanent, and any new spending reverses it entirely.
Try it in the calculator: switch the minimum formula to 2% and the payoff time becomes absurd. This is not a hypothetical edge case — it is why regulators in several countries have pushed issuers toward formulas that guarantee the balance actually amortises.
What to do about an existing balance
Call and ask for a lower rate. This costs nothing, takes ten minutes, and succeeds more often than people expect — particularly with a decent payment history or a competing offer to mention. A reduction from 22.9% to 17% saves real money immediately.
Consider a 0% balance transfer if you can realistically clear the balance within the promotional window, typically 12 to 21 months. The transfer fee is usually 3–5%, which on $6,000 is $180 to $300 — far less than a year of interest at 22.9%.
Stop using the card while paying it down. Interest is charged on the average balance, so new spending directly undoes progress. Many people find that removing the card from their phone's saved payment methods does more than willpower.
And if you have several cards, pay minimums on all of them and direct everything spare at the highest-rate balance first. That ordering always produces the lowest total interest.
Frequently asked questions
- Does paying the minimum hurt my credit score?
- Paying the minimum on time keeps your payment history clean, which is good. But carrying a high balance raises your credit utilisation, which is a major scoring factor. Paying more than the minimum helps your score by reducing utilisation.
- How is my minimum payment calculated?
- Most US issuers use 1% of the balance plus accrued interest and fees, with a floor around $25–35. Some use a flat 2–4% of the balance. Your cardholder agreement states which applies.
- Is it better to pay off one card or spread payments?
- Pay minimums on everything, then put all remaining money toward the highest-interest balance. Spreading extra payments evenly costs more in total interest.
- What happens if I only pay the minimum forever?
- With a 1%-plus-interest formula the card eventually clears, but it can take two decades and cost more than double the original balance. With a flat-percentage minimum on a high-APR card, it may never meaningfully clear at all.