Credit card debt
$15,000 on a Card at 24% APR — What It Actually Costs
A minimum payment is not a payment plan. It is the smallest amount the issuer will accept without closing your account, and on a balance this size at this rate it is designed to keep you paying almost indefinitely.
The short answer
At a typical 1%-of-balance-plus-interest minimum, $15,000 at 24% takes 344 months — 28.7 years — and costs $28,887 in interest, nearly twice the balance. A fixed $500 a month clears it in 47 months for $8,137. The difference between those two choices is $20,750 and 24 years.
What each payment does
| Monthly payment | Time to clear | Interest paid | Total paid |
|---|---|---|---|
| Minimum (1% + interest, from $450) | 344 months / 28.7 yrs | $28,887 | $43,887 |
| $400 fixed | 71 months / 5.9 yrs | $13,002 | $28,002 |
| $500 fixed | 47 months / 3.9 yrs | $8,137 | $23,137 |
| $750 fixed | 26 months / 2.2 yrs | $4,348 | $19,348 |
Note the shape: going from the minimum to $400 — an increase of $50 on the first payment — saves nearly $16,000. The minimum shrinks as the balance does, which is precisely why it never finishes.
Why the minimum behaves this way
| Month | Balance | Interest that month | Minimum payment | Principal repaid |
|---|---|---|---|---|
| 1 | $15,000 | $300 | $450 | $150 |
| 12 | $13,430 | $269 | $403 | $134 |
| 60 | $8,290 | $166 | $249 | $83 |
| 120 | $4,536 | $91 | $136 | $45 |
The payment falls as fast as the balance does, so the proportion going to principal never improves. A fixed payment breaks that loop: as interest falls, every dollar of the fixed amount that is no longer needed for interest goes to principal instead.
The rate matters as much as the payment
| APR | $500/month clears in | Interest |
|---|---|---|
| 24% | 47 months | $8,137 |
| 18% | 41 months | $5,077 |
| 12% | 36 months | $2,923 |
| 0% for 18 months, then 24% | 32 months | $930 |
A balance transfer or a consolidation loan is worth pricing, but only alongside the transfer fee and only if the payment continues at the same level afterwards. A lower rate with a lower payment can cost more than the card did.
What this assumes
- A $15,000 balance at 24.00% APR, interest compounded monthly.
- A minimum payment of 1% of the balance plus that month’s interest, with a $25 floor — a common US formula. Yours is on your statement and may differ.
- No new spending on the card. Any new purchase resets this arithmetic.
- Payments made on time; a late fee or a penalty APR makes every row worse.
Every one of these is an input, not a fact about your situation. Change them in the calculators below and the answer changes with them.
Run the math yourself
These calculators give you the same numbers we used above — with your own inputs.
Bottom line
Stop using the card, then set a fixed payment and never reduce it as the balance falls — that single behaviour is worth more than any rate you can negotiate. If you have several cards, put every spare dollar on the highest rate first and the minimum on the rest. Check whether a balance transfer is available before you start, but only take one if you will keep the same payment through the promotional period.
Disclaimer. This is educational, not personalized financial advice. Numbers depend on your specific tax bracket, state, and goals. Verify with the IRS, SSA, or a CPA before acting. See our Financial Disclaimer.
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