A credit card payoff calculator works out how long a balance takes to clear and what the interest adds up to, given your rate and what you pay each month. The minimum payment is the smallest amount your issuer will accept, and it shrinks as your balance does, which is what stretches payoff into years. This calculator shows how long the card takes to clear and what the interest adds up to. Then compare paying the minimum against a fixed amount, or work backwards from the date you want to be debt free. The minimum is the slow path because it shrinks as the balance does, and that is what stretches payoff into years or decades.
This models the most common minimum-payment structure: the greater of a percentage of your balance, or a fixed dollar floor. That is what most issuers use, and it is the version that produces the shrinking-payment effect described below.
Some issuers use a different formula: a smaller percentage of the principal, typically around 1%, with that month's interest and fees added on top. That produces a higher payment early on and pays down principal at a steadier rate, so the timeline here would be pessimistic for those cards. If your statement shows interest added separately rather than absorbed into the percentage, this is the structure you have, and the results below will not match your card.
Two other things this does not model: any fees beyond interest, and any change to your rate part-way through. Promotional rates that expire, penalty rates triggered by a late payment, and annual fees would all shift the real numbers.
Your card issuer isn't being generous by lowering your minimum as your balance drops - it's just doing the math again each month. If your minimum is 2% of the balance, a $5,000 balance means a $100 minimum; once that balance is down to $2,000, the minimum is only $40. Meanwhile interest is still charging against whatever's left, so a shrinking payment against a slower-shrinking balance is exactly what turns a few thousand dollars into a decade-plus payoff. Simple calculators often assume a fixed payment and give an optimistic payoff estimate as a result - this one recalculates the minimum every month as the balance actually falls, which is the real reason the payoff drags on so much longer than it looks like it should.
The fastest way out isn't a different card or a clever trick - it's simply not letting the payment shrink. Freezing your payment at whatever the first minimum was, or better, adding a fixed amount on top of it every month regardless of what the statement says, keeps the payment doing real work instead of drifting down alongside the balance.
It is the smallest amount your card issuer will accept in a month, typically 1-3% of the balance with a floor of about $30. Because it is a percentage, the amount asked for falls as your balance falls.
The minimum is a percentage of what you owe, so as the balance drops the payment drops too. The debt shrinks more and more slowly, which is why a balance that could clear in a few years can instead take decades.
Almost always. A fixed payment does not shrink as the balance falls, so more of each payment goes to the principal every month rather than less. The difference over the life of a balance is usually measured in years and thousands of dollars.
Set the target timeline in the goal field and the calculator solves backwards for the fixed monthly payment that clears the balance exactly on schedule - the same amortization math a loan uses, run in reverse.
Not directly, as long as you pay on time - minimum payments count as paying as agreed. What it does hurt is your credit utilization, the ratio of balance to credit limit, which scoring models weigh separately, and it costs far more in interest over time than the score impact alone would suggest.
Credit utilization is your balance divided by your credit limit, and it is one of the larger factors in most credit scores. Making only minimum payments keeps the balance - and therefore utilization - high for far longer than paying a fixed amount would, which is a separate cost on top of the extra interest this calculator shows.