Credit Card APRs Near 24% in 2026: What a Fixed Monthly Payment Really Costs
2026-09-18
Short answer: At roughly 24% APR, a $6,000 balance paid at a fixed $150 a month takes about 80 months and costs about $6,030 in interest — more than the balance itself. The same debt at $250 a month clears in 33 months for about $2,225. The extra $100 a month is worth around $3,800.
The figure
US credit card interest in 2026 is running close to 24% APR on accounts that are assessed interest, with the commercial-bank average across all card plans lower — around 21% — because that series includes accounts that never carry a balance. The Federal Reserve publishes both in its G.19 consumer credit release.
The gap between those two numbers is the whole story of card debt: the average card is cheap, and the average balance is not.
The arithmetic
months to clear = −ln(1 − (balance × r) ÷ payment) ÷ ln(1 + r)where r is the APR divided by 12.
Worked example — $6,000 on a card at 23.79% APR, with no new spending:
| Fixed monthly payment | Months to clear | Total interest |
|---|---|---|
| $150 | 80 (6 yr 8 mo) | $6,034 |
| $250 | 33 (2 yr 9 mo) | $2,225 |
| Difference | 47 months | $3,809 |
At $150 a month the interest exceeds the original balance. You pay for the purchases twice and still take nearly seven years to do it.
The first month’s interest on that 6,000 is 118.95. A 150 payment therefore reduces the balance by 31.05 — about 21 cents of every dollar paid. A 250 payment reduces it by 131.05, about 52 cents of every dollar. That ratio, not the payment size, is what makes the term collapse.
Why an extra $100 does so much
Interest is charged on what is left, so every dollar of extra payment removes interest from every remaining month at once. The relationship between payment and term is not proportional: raising the payment by 67% cut the term by 59% and the interest by 63%.
The same asymmetry runs the other way, which is the part people meet by accident. Dropping from 250 to 150 does not make the debt 40% slower. It makes it 142% slower.
What would reverse the conclusion
- A genuine 0% promotional rate. With no interest accruing, every dollar goes to principal and the arithmetic above does not apply for the length of the promotion. Check what happens on the day it ends, and whether interest is deferred rather than waived.
- New spending on the same card. The calculation assumes the balance only falls. If the card is still in use, the effective payment toward old debt is the payment minus the new spending, which can be close to zero.
- A debt with a higher rate. If a second balance carries a higher APR, paying it first saves more per dollar. The ordering matters more than the total payment when rates differ widely.
- An employer retirement match you would forfeit. A match is typically an immediate 50-100% return, which beats even 24%. Capture the match, then attack the card.
Run your own numbers in the credit card payoff calculator →