Why Minimum Payments Cost You So Much
Credit card minimum payments are calculated to keep you in debt as long as legally possible — typically just enough to cover that month's interest plus a small sliver of principal. On a card with a 19.6% APR, most of your minimum payment for the first several years is just interest, barely touching what you actually owe.
📊 Real Example: An $8,500 balance at 19.6% APR, paying only the $200 minimum, takes 6 years 2 months to pay off and costs $6,125 in interest — nearly as much as the original balance. Add just $50/month extra, and it drops to 4 years 3 months, saving $2,119 in interest and finishing 23 months sooner.
That's the pattern worth internalizing: a relatively small extra payment doesn't just chip away at the balance a little faster — it fundamentally changes how much of your money goes to the bank versus staying in your pocket.
How Much Difference Does Extra Payment Really Make?
| Monthly Payment | Payoff Time | Total Interest |
|---|
| $200/mo (minimum only) | 6 years, 2 months | $6,125 |
| $250/mo (+$50 extra) | 4 years, 3 months | $4,006 |
Based on an $8,500 balance at 19.6% APR. Try your own numbers in the calculator above — the pattern holds at almost any balance and rate.
Frequently Asked Questions
How is credit card interest actually calculated?
Most credit cards use daily compounding: your APR is divided by 365, applied to your balance every day, and added to what you owe. This calculator simplifies that into monthly compounding (APR divided by 12), which is very close to the real daily-compounded result and is the standard approach used by most payoff calculators.
Does paying more than the minimum hurt my credit score?
No — paying more than the minimum only helps your credit score over time. It lowers your credit utilization ratio (the percentage of your available credit you're using), which is one of the biggest factors in your score. There's no penalty for paying extra, and no benefit to paying only the minimum.
Should I pay off my credit card or invest instead?
For almost everyone, pay off the credit card first. Credit card APRs (often 18-29%) are far higher than realistic long-term investment returns (historically around 7-10%). Paying down a 19.6% APR card is a guaranteed 19.6% return on your money — no investment reliably beats that.
What if I have multiple credit cards, not just one?
This calculator is built for a single card. If you're juggling several cards or other debts, use the
Debt Avalanche Planner instead — it handles multiple debts at once and tells you which one to prioritize for the biggest interest savings.