Total current debt balance.
Credit cards are typically 18–29% APR.
Amount you pay each month.
Months to Pay Off
50
Number of monthly payments until debt is cleared.
Total Amount Paid
$7,500.00
Total Interest Paid
$2,500.00
Interest as % of Balance
50.0%
Estimate only — not financial advice; lender terms, fees, and taxes vary. Read the full disclaimer ↓
Year-by-year principal paid, interest paid, and remaining balance at the selected fixed payment, using the same interest math as the calculator.
| Year | Principal paid | Interest paid | Ending balance |
|---|---|---|---|
| Year 1 | 878 | 922 | 4,122 |
| Year 2 | 1,070 | 730 | 3,052 |
| Year 3 | 1,305 | 495 | 1,747 |
| Year 4 | 1,591 | 209 | 156 |
| Year 5 | 156 | 3 | 0 |
Uses the amortization formula solved for the number of periods.
$5,000 balance at 20% APR, paying $150/month.
Balance
$5,000
APR
20% (≈1.667%/month)
Monthly Payment
$150
Months to Payoff
50 months
Total Paid
$7,500
Total Interest
$2,500
It takes about 50 months (just over 4 years) and roughly $2,500 in interest — meaning interest equals about half the original balance. Raising the payment even a little shortens the timeline and cuts the interest meaningfully.
This tool answers a simple, motivating question: if I pay a steady amount every month, when is the debt gone and what does it cost me? You enter the balance, the APR, and your monthly payment, and it returns the months to payoff and the total interest — ideal for a credit card, a personal loan, or any single fixed-rate balance.
Under the hood, each month interest is charged on the remaining balance, your payment covers that interest first, and the rest reduces principal. As the balance shrinks the interest portion falls, so more of every payment attacks principal — the snowball effect that makes the last months fly by.
The most important point is what this is not: a credit-card minimum payment. Card minimums are a small percentage of the balance, so they shrink as the balance drops, which stretches repayment over many years and piles on interest. A fixed payment, as modelled here, holds steady — and that one difference can cut years off the payoff.
It is why the single best move on a card is to set a fixed monthly amount and stick to it, rather than paying "the minimum" the statement suggests.
There is a floor. If your monthly payment is no larger than the interest charged that month, the balance cannot fall and the debt never clears — the tool flags this case. On a high-APR card a payment that feels reasonable can be almost entirely interest.
A related trap is underestimating the rate: penalty APRs and cash-advance rates run well above the purchase rate, so use the rate that actually applies to the balance you are clearing.
Because interest compounds against you, nudging the payment up a little has an outsized effect. Test a slightly higher monthly amount and watch both the months and the total interest fall — on a steep-rate balance the improvement is often dramatic for a modest increase.
If the rate itself is the problem, check whether a balance transfer or a lower-rate personal loan would cut the interest. Factor in any transfer fee, and make sure the new payment still clears the balance before a promotional rate ends.
The estimate assumes one fixed rate, an unchanging payment, and no new charges. Real accounts add fees, change rates, and accrue interest daily, so your actual payoff may differ.
Use it as a baseline and a motivator. For an exact payoff figure ask your lender, and if the debt feels unmanageable, a nonprofit credit counsellor can help build a broader plan.
Minimum payments on credit cards are often 1–2% of the balance and shrink as the balance falls. At 20% APR, paying close to the minimum on a $5,000 balance can stretch repayment past a decade and cost more in interest than the original balance. A fixed monthly payment, like the one this calculator uses, pays the debt off far faster.
Pay minimums on all debts, then put all extra money toward the highest-interest debt first. This minimizes total interest paid. The debt snowball (smallest balance first) builds psychological momentum instead.
On high-rate debt, a large part of each early payment goes to interest. Every extra dollar above the interest charge attacks principal directly, which lowers next month’s interest, which frees up even more of the following payment for principal. That compounding-in-reverse is why nudging the payment up by even $20 or $30 can cut months off the timeline and hundreds off the interest.
If your monthly payment is less than or equal to the monthly interest charge, the balance never goes down and the debt is effectively never repaid. The calculator flags this case. The fix is to pay more than the monthly interest, lower the rate (for example with a balance transfer), or both.
No. It assumes a single fixed interest rate and no annual fees, late fees, or penalty APRs. Real credit cards can raise your rate after a missed payment and may add fees, so your actual payoff could take longer. Treat the result as a clean baseline and build in a cushion.
A common approach is to keep a small starter emergency fund so a surprise expense does not push you deeper into debt, then aggressively pay down high-interest balances, since few investments reliably beat a 20% interest rate. Once high-rate debt is gone, redirect those payments into savings and investing. Your own priorities and job stability matter, so adjust accordingly.
Figures on this page are checked against primary, authoritative sources. Links open in a new tab.
Budget & credit disclaimer
These are planning estimates based on the numbers you enter. Interest rates, fees, and lender terms vary and change over time. This is educational information, not financial or credit advice.
Built and maintained by Calculator Matters, an independent calculator project. Method checked against published formulas and primary sources · Last reviewed 4 June 2026 · How we calculate · Found an error? corrections@calculatormatters.com