Paying Minimums Only: How Long It Really Takes
Here comes the number that makes people put down their coffee. Take a $5,000 balance at a 22% APR and pay only the minimum — typically max(2% of the balance, $25) — and you are not paying off a debt at all in any useful sense. You are buying a decades-long lease on it. The monthly payment starts around $100 and slowly falls as the balance falls, and because the minimum shrinks as you go, the finish line keeps running away from you. Payoff can stretch toward decades, and total interest can end up more than double what you originally charged.
Why is it so brutal? Interest compounds monthly on whatever balance remains. In the early months, nearly every dollar of the minimum is interest, not principal. In month one on that $5,000 card at 22% APR, the monthly rate of about 1.83% adds roughly $92 of interest. A $100 minimum means only about $8 actually eats into the balance. Meanwhile the rest grew that very month, so the balance barely budges. You wrote a check, and the debt yawned.
The Math In Plain Sight
Here is the payoff formula that drives the whole calculation:
n = -log(1 − i·B/P) / log(1 + i)
where B is the balance, i is the monthly rate (APR divided by 12), and P is the fixed monthly payment. The trouble appears right inside the fraction: if your payment P is less than or equal to B·i — the interest that accrues each month — then (1 − i·B/P) goes to zero or negative, the log breaks, and the balance never pays down meaningfully. Pay a fixed $350 a month instead and the picture changes completely.
Stick with the $5,000 at 22% example. At $200 a month, you clear the balance in about 34 months and pay roughly $1,750 in interest. Push the payment to $350 and you finish in about 17 months with roughly $850 in interest. Same debt, same rate — the littler payment just buys you over a year of extra interest. Now drop to the 2% minimum and watch the same project run for decades, with the total interest bill ballooning past the original principal.
Do A Little More, Every Month
You do not need a dramatic plan to escape the minimum trap. Paying even a fixed $25 more than the required minimum each month compounds into real savings, because principal that is gone cannot accrue interest. The faster the balance falls, the faster the minimum itself is freed up — and you can roll that into the next payment. The single most effective habit is simple: never pay less than last month, and keep the same figure flowing even as the minimum shrinks.
Frequently Asked Questions
What is my minimum payment?
Most issuers use max(1%–3% of your balance, $25). The common default is 2% of the balance or $25, whichever is larger. Check your statement, because the exact percentage varies by issuer.
Does paying a bit more than the minimum really help?
Yes, dramatically. A fixed $200 payment on a $5,000 balance at 22% clears in about 34 months; the 2% minimum can stretch payoff over decades. Every extra dollar of principal kills future compound interest.
What happens if I miss a payment?
You lose your on-time record, likely trigger a late fee, and may face a penalty APR that can push the rate far higher — which accelerates exactly how fast interest compounds back on you.
What is the fastest way to pay off my card?
Pay the largest fixed amount you can sustain every month, roll any windfalls into it, and optionally combine it with a 0% balance transfer to stop interest leaking while you pay. Speed comes from bigger, consistent payments.