Why does my credit card balance barely move even though I'm paying every month?

If the payment is close to the monthly interest charge, most of it is covering interest rather than reducing the balance. On 6,000 at 24.99% APR, the first month alone accrues about 125 in interest, so a 150 payment leaves only about 25 actually paying down the balance.

How much faster is paying 300 instead of 200 on a credit card?

On a 6,000 balance at 24.99% APR, 200 a month takes 48 months and costs about 3,512 in interest, while 300 a month takes 27 months and costs about 1,841. The extra 100 a month saves roughly 21 months and 1,671 in interest.

Will paying only the minimum ever pay off my card?

Sometimes not at all. A percentage-of-balance minimum shrinks as the balance falls, and on a high-rate card the minimum can sit at or below the interest accruing that month, in which case the balance stalls or grows regardless of how long payments continue.

Does a 0% balance transfer actually save money?

Usually yes, but only after accounting for the transfer fee, typically 2% to 5% of the moved balance, and only for the balance that gets paid off before the promotional rate ends. Run this calculator at 0% for the promotional months, then at the standard APR for whatever is left over.

Why did my interest go up even though I didn't add a new charge?

Most credit cards carry a variable purchase APR tied to the prime rate, so a rate increase raises the interest on your existing balance without any new spending. Re-run the payoff at the new APR printed on your latest statement to see the updated timeline.

Is it better to pay off the smallest card first or the highest-rate card first?

Paying the highest-rate balance first, the avalanche method, minimizes total interest paid across multiple cards. Paying the smallest balance first, the snowball method, clears an account sooner and can be easier to stick with. The debt payoff planner compares both across every balance you have.

Credit card payoff calculator

This calculator answers one question a statement never spells out plainly: at the payment you actually send each month, how many months does the balance take to hit zero, and how much of that money is interest rather than debt reduction. Because credit card interest compounds monthly on whatever is left, a payment that looks reasonable can still take years to clear a balance that seems small.

What counts as a workable payment

A payment only makes progress if it exceeds the interest charged that month. On a 6,000 balance at 24.99% APR, month one alone accrues about 125 in interest, so anything under that figure shrinks nothing — the balance grows even while payments are being made.

Card issuers in the US are required to print, on every statement, how long the balance would take to clear at the minimum payment and what a three-year payoff would cost instead, under the CARD Act disclosure rules. That box is effectively this calculator run twice, and it is worth reading before assuming the minimum is doing you any favours.

As a working benchmark, clearing a typical card balance inside two to three years generally needs a payment several times the minimum. Below that pace, interest usually outpaces principal reduction for the first year or more.

Three payments on the same balance

Take a 6,000 balance at 24.99% APR. Paying 200 a month clears it in 48 months and costs about 3,512 in interest — more than half the original balance again in interest alone.

Raise the payment to 300 and the picture changes sharply: the card is paid off in 27 months, and total interest drops to about 1,841. An extra 100 a month, 1,700 more total, cuts nearly 21 months and 1,671 in interest off the plan.

Now try the 2% minimum on that same balance, which starts at 120. The calculator returns no payoff at all, because 120 does not cover the roughly 125 of interest accruing in month one. This is the trap a fixed percentage minimum sets: as the balance falls, the required minimum falls with it, so the payment can chase the interest indefinitely without ever overtaking it.

Why the minimum payment moves the goalposts

Most US issuers calculate the minimum as roughly 1% to 3% of the balance plus that month's interest, with a floor of 25 to 35. Because the required minimum shrinks alongside the balance, a borrower who only ever pays it keeps making a smaller payment while interest keeps compounding on what remains, which is why minimum-only payoffs commonly stretch past a decade on an ordinary balance.

A 3,500 balance at 19.99% APR paid at 150 a month clears in 30 months for about 969 in interest. Drop that to 90 a month and the payoff stretches to 64 months and roughly 2,185 in interest — more than double the cost for a payment that is only 60 lower.

The lesson generalises: on revolving debt, small cuts to the payment produce disproportionate increases in both time and cost, because every extra month adds another full month of interest on a balance that is falling only slowly.

Where the fixed-payment formula breaks down

This calculator assumes a constant payment, a constant APR, and no new spending on the card. Any of the three breaks the projection. New purchases restart the interest clock on those amounts, and most issuers apply payments to the lowest-rate balance first under CARD Act rules, so a card carrying both a purchase balance and a higher-rate cash advance balance pays down slower than this single-balance model shows.

Promotional 0% APR periods also do not fit this model directly. Run the number at 0% to see the flat payoff pace during the promotion, then re-run it at the card's standard purchase APR for whatever balance remains once the promotional window ends, since that is the rate that will actually apply afterward.

Variable-rate cards, which cover most US credit cards, move with the prime rate. A rate hike partway through a payoff plan raises the interest floor mid-course, so a payment that comfortably covered interest at the start can fall behind it later without the borrower changing anything.

Jurisdiction and timing notes

US card interest is typically calculated on the average daily balance, compounded daily and billed monthly, which this calculator approximates with a single monthly compounding step; the two methods differ by only a small amount for a level payment.

In the UK, the Financial Conduct Authority requires card issuers to intervene when a customer has made minimum-only payments for eighteen months or longer, including prompts to pay more, because sustained minimum payments are treated as a persistent-debt indicator rather than normal use.

Any balance transferred to a new card resets the interest terms entirely, usually with an upfront transfer fee of 2% to 5% of the amount moved; add that fee to the transferred balance before comparing the new payoff timeline against staying put.

Frequently asked questions

Why does my credit card balance barely move even though I'm paying every month?: If the payment is close to the monthly interest charge, most of it is covering interest rather than reducing the balance. On 6,000 at 24.99% APR, the first month alone accrues about 125 in interest, so a 150 payment leaves only about 25 actually paying down the balance.
How much faster is paying 300 instead of 200 on a credit card?: On a 6,000 balance at 24.99% APR, 200 a month takes 48 months and costs about 3,512 in interest, while 300 a month takes 27 months and costs about 1,841. The extra 100 a month saves roughly 21 months and 1,671 in interest.
Will paying only the minimum ever pay off my card?: Sometimes not at all. A percentage-of-balance minimum shrinks as the balance falls, and on a high-rate card the minimum can sit at or below the interest accruing that month, in which case the balance stalls or grows regardless of how long payments continue.
Does a 0% balance transfer actually save money?: Usually yes, but only after accounting for the transfer fee, typically 2% to 5% of the moved balance, and only for the balance that gets paid off before the promotional rate ends. Run this calculator at 0% for the promotional months, then at the standard APR for whatever is left over.
Why did my interest go up even though I didn't add a new charge?: Most credit cards carry a variable purchase APR tied to the prime rate, so a rate increase raises the interest on your existing balance without any new spending. Re-run the payoff at the new APR printed on your latest statement to see the updated timeline.
Is it better to pay off the smallest card first or the highest-rate card first?: Paying the highest-rate balance first, the avalanche method, minimizes total interest paid across multiple cards. Paying the smallest balance first, the snowball method, clears an account sooner and can be easier to stick with. The debt payoff planner compares both across every balance you have.

Sources

Consumer Financial Protection Bureau — Credit CARD Act disclosures — Requires statements to show the minimum-payment payoff period and a three-year payoff estimate (Regulation Z, current 2025).
Federal Reserve — Consumer Credit (G.19) — Reports the average interest rate on assessed-interest credit card accounts, around 22% in 2025 data releases.
Financial Conduct Authority — persistent credit card debt rules — Requires issuers to intervene after 18 months of minimum-only payments and after 36 months to offer a repayment plan.