Understand how minimum payments extend debt

The Minimum Payment Trap

Credit card companies set minimum payments low — often just 1–2% of the balance — because they profit from the interest you pay over years or decades. This calculator shows the brutal reality of minimum-only payments.

Why the Numbers Can Surprise You

Many people find the results genuinely shocking the first time they run them. A balance that feels manageable — say, a few thousand units — can take over a decade to clear on minimum payments alone. Most of that time, your money is largely servicing interest rather than reducing what you actually owe. It can help to think of it this way: the lower your minimum payment, the longer the debt stays alive. This is worth considering whenever a statement arrives and the minimum figure looks temptingly affordable.

One Thing People Often Overlook

Minimum payments are usually calculated as a percentage of your current balance, so they shrink as the balance falls. That sounds helpful, but it actually slows your progress considerably. Even a small fixed overpayment each month can make a meaningful difference to the total interest paid. Use the calculator to compare scenarios and see the contrast for yourself.

Quick example

With balance of 5,000 and apr of 22 (plus minimum payment of 2), the result is 80 yr 8 mo. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.

Which inputs matter most

You enter Balance, APR, and Minimum Payment %. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.

What's happening under the hood

This calculator uses an iterative approach to simulate minimum monthly payments based on a percentage of the outstanding balance, applying monthly compound interest at the stated APR. It projects the total interest paid and months to payoff under the assumption of consistent rates, no additional charges, and no extra payments beyond the calculated minimum. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.

Using this to stay on track

The most common failure mode isn't the plan itself — it's letting the balance creep back up while you're paying it down. Set a rule: no new debt added to the same account until the balance is zero. The calculator is only useful if the number it shows doesn't keep resetting.

What this doesn't capture

Real payoff journeys include missed payments, fee changes, balance transfers, and promotional rates that reset. The calculation assumes a steady plan; reality is rarely that clean. Use the figure as the best-case plan against which actual progress gets measured.