Paying the minimum on a credit card keeps the account in good standing. It is also designed, in effect, to keep you in debt for a long time, because most of a small payment goes to the interest added that month.
It helps to see what that looks like once, with a real number.
How the interest works each month
A rate quoted as a yearly percentage is usually applied monthly at one twelfth of that. On a $3,000 balance at 24 percent, the monthly rate is 2 percent, so about $60 of interest is added in the first month. If your minimum payment is $90, only about $30 of it reduces what you owe.
Next month the balance is a little lower, so the interest is a little lower, and slightly more of the payment goes to the balance. The process repeats, slowly, which is why the total time is longer than most people expect.
What an extra amount does
Three debts, from the worked example in the snowball and avalanche guide. Starting September 2026, with a constant rate and constant minimums.
$0, minimums only
- Debt-free
- March 2031
- Interest along the way
- $9,232.57
$200
- Debt-free
- September 2029
- Interest along the way
- $4,995.84
| Extra each month | Debt-free | Interest along the way |
|---|---|---|
| $0, minimums only | March 2031 | $9,232.57 |
| $200 | September 2029 | $4,995.84 |
Read this as a comparison, not a forecast
Those figures assume a constant rate and a constant minimum. On many cards the minimum shrinks as the balance falls, which stretches the real timeline out. New charges make it longer again. So the interest and dates above are a way to compare two paths on the same numbers, and real life on a card is usually slower.
The useful takeaway is not the exact dates. It is that a modest extra amount, paid consistently, cuts the time and the interest by a lot. If you have more than one debt, the order matters less than the extra, as shown in debt snowball vs avalanche.
What to do with this
5 things to do
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