💳 Credit Card Payoff Calculator
Calculate how long to pay off your credit card balance, total interest costs, minimum payments, and interest saved by paying extra monthly. 100% free.
What Credit Card Payoff Calculator Does
Credit card debt is unusual among consumer loans because the lender sets your payment low on purpose. A minimum payment is typically 1–3% of the balance plus that month's interest, which is calibrated to keep the account current while retiring the principal as slowly as possible.
The consequence is stark. On a $5,000 balance at 24.99% APR, a minimum of 1% of the balance plus interest takes 19 years and 8 months and costs $9,278 in interest — nearly twice what you borrowed. Holding a fixed $150 a month instead clears the same balance in 4 years and 10 months for $3,622.
This calculator compares those paths: how long a minimum-only schedule runs, what a fixed payment does instead, and what any extra amount saves. It models daily interest accrual, which is how most US issuers actually compute the charge.
How to Use Credit Card Payoff Calculator
- Enter your total current credit card balance
- Input your annual percentage rate (APR %)
- Choose fixed monthly payment or minimum payment only
- View your debt-free date, total interest, and savings with an extra payment accelerator
Formula Used by Credit Card Payoff Calculator
Daily periodic rate and monthly interest
DPR = APR ÷ 365 interest = average_daily_balance × DPR × days_in_cycle
- APR
- Annual percentage rate as a decimal — 24.99% is 0.2499
- DPR
- Daily periodic rate; most US issuers divide by 365
- days_in_cycle
- Length of the billing cycle, usually 30 or 31
Worked example
A $5,000 balance carried at 24.99% APR through a 30-day cycle.
- DPR = 0.2499 ÷ 365 = 0.00068466
- Interest = 5,000 × 0.00068466 × 30 = 102.70
Result: $102.70 in interest for the month. A 2%-of-balance minimum of $100 does not even cover it — the balance would grow.
Months to pay off at a fixed payment
n = −log(1 − (B × i) ÷ P) ÷ log(1 + i)
- B
- Current balance
- i
- Monthly periodic rate: APR ÷ 12
- P
- Fixed monthly payment
- n
- Number of months, rounded up
Worked example
$5,000 at 24.99% APR, paying a fixed $150 per month.
- i = 0.2499 ÷ 12 = 0.020825
- B × i = 5,000 × 0.020825 = 104.125
- 1 − (104.125 ÷ 150) = 0.305833
- n = −log(0.305833) ÷ log(1.020825) = 1.18471 ÷ 0.020611
Result: n = 57.5, so 58 months — 4 years and 10 months, with $3,622 of interest.
$5,000 at 24.99% APR — What the Payment Choice Costs
The minimum-payment row assumes 1% of the balance plus that month's interest, with a $25 floor — a common issuer formula. Every other row is a fixed payment held constant until the balance clears. Note that some issuers set the minimum at a flat 2% of the balance with interest included; on this balance that payment never covers the interest, so it would never pay the card off at all.
| Monthly payment | Time to clear | Total interest | Total paid |
|---|---|---|---|
| Minimum only | 19 yr 8 mo | $9,278 | $14,278 |
| $125 fixed | 7 yr 3 mo | $5,855 | $10,855 |
| $150 fixed | 4 yr 10 mo | $3,622 | $8,622 |
| $200 fixed | 3 yr 0 mo | $2,135 | $7,135 |
| $300 fixed | 1 yr 9 mo | $1,206 | $6,206 |
| $500 fixed | 1 yr 0 mo | $666 | $5,666 |
Avalanche vs Snowball on Multiple Cards
Two ordering strategies for paying several balances. Avalanche always costs less; snowball clears individual accounts sooner, which some people find easier to sustain.
| Method | Pay extra toward | Optimizes for | Trade-off |
|---|---|---|---|
| Avalanche | Highest APR first | Lowest total interest | The first balance may take a long time to clear |
| Snowball | Smallest balance first | Fastest account closures | Costs more interest overall |
How to Read Your Result
Why the minimum payment is a trap by design
A minimum of "2% of balance plus interest" falls as the balance falls, so the payment shrinks alongside the debt and the schedule stretches. Early on, almost the entire payment is interest. US card statements are required by the CARD Act to show how long minimum-only payments would take and what a 3-year payoff would cost — that box is the single most useful number on the statement.
Fixed payments beat percentage payments
Holding the payment constant as the balance falls is what actually retires debt. In the table above, the difference between paying the minimum and paying a fixed $150 is nearly 15 years and $5,650. The amount is not dramatically different at the start; the behavior is.
The grace period only exists if you clear the balance
Most cards charge no interest on new purchases if you pay the statement balance in full by the due date. Carry any balance and that protection typically disappears — new purchases begin accruing interest from the transaction date. This is why paying "most of it" is meaningfully worse than paying all of it.
Limitations & Accuracy Notes
- Minimum payment formulas vary by issuer and are set in your cardholder agreement. The 2%-plus-interest rule modeled here is common but not universal; some issuers use 1%, and most impose a floor around $25–$35.
- The model assumes a fixed APR and no new spending. A variable APR tracks the prime rate and will move, and any new purchase resets the arithmetic.
- Fees are excluded — annual fees, late fees, cash advance fees and balance transfer fees all add to the balance and are not modeled.
- Cash advances usually carry a higher APR and no grace period at all, accruing interest from the day of the transaction.
- A promotional 0% APR period changes everything while it lasts, and often ends with deferred interest charged retroactively if the balance is not cleared in time. Read those terms carefully.
- This is arithmetic, not financial advice. If debt payments are unmanageable, a nonprofit credit counseling agency can help more than a calculator can.
Frequently Asked Questions
How does the credit card payoff calculator work?
How much money do I save by paying extra each month?
What is the danger of paying only the minimum payment?
Why does paying the minimum take so long?
Avalanche or snowball — which should I use?
How is credit card interest actually charged?
Does paying off a card improve my credit score?
Is a balance transfer worth it?
Is my balance data stored?
References & Further Reading
- CFPB — How does my credit card company calculate the amount of interest I owe? — US regulator explanation of daily periodic rate and average daily balance
- Federal Reserve — Consumer Credit (G.19) — Official series for average US credit card interest rates