How the Credit Cards Payoff Calculator Works
A credit card is different from most loans. It has no fixed term and no fixed payment. You pay interest on the balance you carry, and the card asks only for a small minimum each month. That makes it easy to stay in debt for many years without noticing. The Credit Card Payoff Calculator shows how long it will take to pay off a card, what it will cost, and how much faster a real payment plan is than the minimum.
What you enter
- Card balance: what you owe now.
- Interest rate (APR): the yearly rate on your statement. Many cards charge 20% or more.
- Your plan: pay a fixed amount every month, aim to be debt-free by a set time, or pay only the minimum.
- Your card's minimum payment rule: most cards ask for a percentage of the balance (often 1%) plus that month's interest, with a lowest amount (often $25 to $35). Your statement shows yours.
How it works, month by month
1. Add a month of interest: balance x APR / 12 2. Subtract your payment 3. Repeat until the balance is zero
The last payment is smaller, because it only needs to clear what is left. If your payment does not even cover the first month's interest, the balance would never go down, and the calculator tells you.
For a plan with a set time, the payment comes from the standard loan formula, where P is the balance, r is the monthly rate (the APR divided by 12) and n is the number of months:
payment = P x r x (1 + r)^n / ((1 + r)^n - 1)
The minimum payment trap
The minimum is calculated again each month. As the balance falls, the minimum falls with it, so payments get smaller and smaller and the card takes a very long time to clear. The calculator uses this rule:
minimum = the larger of (the lowest amount) and (percentage of the balance + the month's interest)
A worked example
You owe $5,000 on a card with a 22% APR. The card asks for 1% of the balance plus interest, with a $25 minimum.
| Plan | Debt-free in | Total interest | Total you pay |
|---|---|---|---|
| Minimum only | 19 years 2 months | $8,099.77 | $13,099.77 |
| $200 a month | 2 years 10 months | $1,749.88 | $6,749.88 |
Paying only the minimum starts at $141.67 a month, and shrinks to $22.86 at the end, over more than 19 years. You would pay $8,099.77 in interest, which is more than the $5,000 you borrowed. A fixed $200 a month clears the card 16 years and 4 months sooner, and saves $6,349.89 of interest.
What it takes to finish by a set time
| Pay off in | Monthly payment | Total interest |
|---|---|---|
| 1 year | $467.97 | $616 |
| 2 years | $259.39 | $1,225 |
| 3 years | $190.95 | $1,874 |
| 4 years | $157.53 | $2,561 |
| 5 years | $138.09 | $3,286 |
| Minimum only | $141.67 falling to $22.86 | $8,100 |
Chart: total interest by plan
The same $5,000 card at 22%. The longer the bar, the more interest you pay:
1 year ███ $616 2 years ██████ $1,225 $200 a month █████████ $1,750 3 years █████████ $1,874 4 years █████████████ $2,561 5 years ████████████████ $3,286 Minimum only ████████████████████████████████████████ $8,100
Tips
- Pay more than the minimum, even a little. It has a big effect on the time and the interest.
- Keep the same payment when the minimum falls. Paying the original minimum amount every month gets you out of debt far sooner.
- Stop using the card while you pay it off. New purchases add to the balance.
- Look at lower-rate options, such as a balance transfer or a personal loan, if the fees are small. The Debt Consolidation Calculator can help you compare.
- Have several cards? The Debt Payoff Calculator shows the best order to pay them.
What this calculator does not include
- New purchases, fees, and changes in your rate. It assumes a fixed rate and no new charges.
- Daily interest. Card issuers usually work out interest daily, so your statement can differ slightly from the monthly figure used here.
- Grace periods, promotional rates, and how your issuer rounds its minimum. Check your statement.
This tool gives an estimate for general information only. It is not financial advice. Your card statement has the exact figures.