What if I only make the minimum payment?

Enter your minimum payment amount to see how long payoff will take. If Infinity appears, raise the payment until the balance can drop.

Does this include new charges?

No. Avoid new purchases to stick to the payoff timeline; otherwise, rerun the calculator with the updated balance.

Why do I see Infinity or an error?

If PMT ≤ monthly interest, the balance can’t shrink. Increase the payment above interest to get a payoff timeline.

Can I include balance transfer fees?

Add the fee to your balance and use the promo APR to see the updated payoff duration.

Does this include annual fees or penalty rates?

No. Add fees to the balance or increase payment to offset them; penalty APRs aren’t modeled.

finance calculator

Credit Card Payoff Calculator

See how long it will take to pay off a credit card balance based on your monthly payment and APR.

Results

Months to payoff: 17.40
Total interest paid: $721 USD

Overview

Carrying a balance on a high‑interest credit card can quietly drain hundreds or thousands of dollars in interest, especially if you only make minimum payments. Seeing the true payoff timeline and total interest at your current payment level is often the wake‑up call people need to adjust their strategy.

This credit card payoff calculator shows you exactly how long it will take to clear a balance and how much interest you’ll pay based on your APR and planned monthly payment. You can then experiment with higher payments or balance‑transfer scenarios to see how much faster you can get out of debt and how much interest you can avoid.

How to use this calculator

Enter your current credit card balance, APR, and the monthly payment you can commit to making consistently.
Review the calculated months to payoff and total interest you would pay if you stick to that fixed payment and avoid new charges.
Increase the monthly payment and rerun the calculation to see how many months you can shave off the payoff timeline and how much interest you can save.
If you are considering a balance transfer with a lower promo APR, adjust the APR and include any transfer fee in the balance to see how the payoff profile changes.
Use the results to decide on a realistic but aggressive payment target that fits your budget while meaningfully speeding up payoff.

Inputs explained

Current balance: Your outstanding credit card balance that you want to pay off. If the card has multiple promotional rates or segments, you can approximate by modeling the portion you care most about or using a blended APR.
APR: The annual percentage rate on the card. Use the purchase APR or the relevant rate for the balance you’re modeling. For balance transfers, use the promotional APR if you plan to keep the debt under that offer.
Monthly payment: The fixed dollar amount you intend to pay each month toward this balance. This should be at least a little higher than the required minimum payment; higher payments reduce payoff time and total interest.

How it works

You enter your current card balance, the APR, and the dollar amount you plan to pay each month. The calculator treats that payment as fixed and applies the standard revolving‑credit payoff formula to solve for the number of months required to bring the balance down to zero.

Under the hood, we compute the effective monthly interest rate r = APR ÷ 12 and use the closed‑form payoff equation n = [ln(PMT) − ln(PMT − balance × r)] ÷ ln(1 + r) to estimate the number of months n needed when your fixed payment PMT exceeds monthly interest.

Once we have n, we multiply your monthly payment by that payoff month count and subtract the original balance to estimate total interest paid over the payoff period.

If your payment is too small to cover monthly interest (PMT ≤ balance × r), the math breaks down—your balance would either barely move or grow. In that case, the calculator signals a problem by returning Infinity for payoff months and total interest, indicating that your payment level cannot successfully pay off the card.

The model assumes no new charges, cash advances, or fees and a constant APR for the duration of payoff, which keeps the results transparent and easy to compare across scenarios.

Formula

n = [ln(PMT) − ln(PMT − balance × r)] / ln(1 + r)
Total interest = PMT × n − balance
Where r = APR / 12

When to use it

Planning a debt snowball or avalanche strategy by assigning a fixed payment to each card and seeing how long it will take to clear them.
Seeing how increasing your payment by $25, $50, or $100 per month shortens payoff time and reduces total interest.
Testing balance transfer scenarios with lower promotional APRs or 0% offers by adjusting APR and balance to include transfer fees.
Comparing the payoff profile of multiple cards to decide which one to target first (often the highest APR card in a debt avalanche).
Coaching yourself or someone else through a credit card payoff plan with concrete timelines and interest savings instead of guessing.

Tips & cautions

Always pay more than the minimum payment whenever possible; minimums are designed to maximize interest and stretch payoff over many years.
Freeze new spending on the card while you are in payoff mode—new charges reset the math and extend your timeline; consider using a different card you pay in full each month for new purchases.
If the calculator shows Infinity or an extremely long payoff period, your payment is likely near interest‑only—raise it until you see a finite payoff time that fits within your goals.
For multiple cards, consider using this calculator to build a payoff ladder, focusing on one card at a time while paying minimums on others, then rolling freed‑up payments to the next card as each balance is eliminated.
Revisit your plan after bonuses, tax refunds, or raises; using some of that money to make lump‑sum payments can dramatically reduce interest and months remaining.
Assumes a fixed APR and fixed monthly payment with no new charges, fees, or cash advances. Real‑world card behavior may differ due to rate changes or additional spending.
Requires your payment to exceed monthly interest (PMT > balance × r); otherwise payoff is not mathematically possible and Infinity is returned.
Does not model card issuer minimum payment formulas, stepped minimums, or changes in minimums as the balance declines.
Promotional periods, penalty rates, and different APR buckets (purchases vs cash advances vs transfers) are not modeled separately—use a single APR or run separate scenarios.
Focuses on a single card at a time; if you carry balances on multiple cards, you’ll need to model each separately or approximate with a blended APR.

Worked examples

$4,500 balance at 19.99% APR with $300 payments

Payoff ≈ 17.6 months
Interest ≈ $775

Increase payment to $400

Payoff ≈ 13.2 months
Interest drops to ≈ $565

Deep dive

This credit card payoff calculator shows how many months it takes to clear your balance and how much interest you’ll pay at your current payment and APR. Enter your balance, APR, and planned monthly payment to get a payoff timeline and interest total.

Use it to plan aggressive paydowns, compare extra payment amounts, or evaluate balance‑transfer offers by plugging in different APRs and fees. It assumes no new charges and a payment high enough to cover interest and chip away at principal.

By making it easy to see payoff time and interest savings for different payment levels, the calculator helps you design a realistic, high‑impact plan to get out of credit card debt faster and with less interest.

FAQs

What if I only make the minimum payment?: Enter your minimum payment amount to see how long payoff will take. If Infinity appears, raise the payment until the balance can drop.
Does this include new charges?: No. Avoid new purchases to stick to the payoff timeline; otherwise, rerun the calculator with the updated balance.
Why do I see Infinity or an error?: If PMT ≤ monthly interest, the balance can’t shrink. Increase the payment above interest to get a payoff timeline.
Can I include balance transfer fees?: Add the fee to your balance and use the promo APR to see the updated payoff duration.
Does this include annual fees or penalty rates?: No. Add fees to the balance or increase payment to offset them; penalty APRs aren’t modeled.

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