Credit Card Calculator

Minimum payment: the subscription plan for staying in debt.

Use this free credit card payoff calculator to find out how long it will take to pay off your balance at a fixed monthly payment — and how much interest you will hand the bank along the way. Enter balance, APR, and payment; get months to freedom and the total interest cost.

Credit card interest compounds monthly at rates that would be illegal for almost anything else. The math is not designed to be understood at a glance; that is a feature, for them. We make it a glance.

What This Credit Card Payoff Calculator Does

Calculates months to pay off a balance at a fixed monthly payment
Shows total interest paid over that time — the real price of the stuff you bought
Tells you plainly when a payment is too small to ever finish ("Never")
Lets you test what an extra $50 or $100 a month actually changes — usually years

How to Use the Credit Card Payoff Calculator

Inputs:

Balance — current statement balance
APR — annual percentage rate from your statement (default 19.99%; many cards are now 24–29%)
Monthly Payment — what you will pay every month, not the minimum they suggest

Steps:

Enter balance and APR from your statement
Enter a fixed monthly payment you can sustain
Click Calculate for months to payoff and total interest
Raise the payment by $50 and calculate again. Repeat until the month count stops making you flinch.

How the Calculation Works

n = −ln(1 − r × B ÷ P) ÷ ln(1 + r) r = APR ÷ 12 ÷ 100 · B = balance · P = monthly payment Total interest = P × n − B

If P ≤ B × r (payment ≤ monthly interest), the balance never shrinks — the calculator returns "Never"
Assumes a fixed payment and no new charges. Using the card while paying it off resets the math
Minimum payments are typically 1–3% of balance + interest, engineered to last a decade

Worked Example: $6,000 balance, 24% APR, $200/month

r = 0.24 ÷ 12 = 0.02 · monthly interest at start = 6,000 × 0.02 = $120 (60% of your payment)
n = −ln(1 − 0.02 × 6,000 ÷ 200) ÷ ln(1.02) = −ln(0.4) ÷ 0.0198 = 46.3 → 47 months
Total paid ≈ 200 × 46.3 = $9,260 → interest ≈ $3,260
At $300/month: 26 months and ~$1,700 interest. The extra $100 a month saves $1,560 and nearly two years. That is the cheapest $100 you will ever spend.

Tips (From People Who Have Made These Mistakes)

Pay the highest-APR card first (avalanche) for the least interest; pay the smallest balance first (snowball) if you need wins to stay motivated. Both beat minimums
A 0% balance transfer for 12–21 months can freeze the interest — if you pay it off before the promo ends and stop using the old card
Call and ask for a lower APR. It works more often than you would think, and the call costs nothing
Check your debt-to-income ratio — lenders do, and so should you

Frequently Asked Questions

How long will it take to pay off my credit card?

Use the formula n = −ln(1 − rB/P) ÷ ln(1 + r), or just this calculator. $3,000 at 22% with $150/month is 25 months; with $100/month it is 41 months and nearly $1,100 of interest.

Why does the calculator say "Never"?

Because your payment is smaller than one month's interest. The balance grows every month no matter how long you pay. Increase the payment above balance × APR ÷ 12 and try again.

How is credit card interest calculated?

Daily: APR ÷ 365 × your daily balance, summed over the billing cycle. Monthly compounding (APR ÷ 12) is a close approximation and what this calculator uses.

Is it better to pay off credit cards or save?

At 20%+ APR, paying the card is a guaranteed 20% return — nothing safe beats it. Keep a small emergency cushion ($500–1,000) so a flat tire does not go back on the card, then attack the balance.

Does paying more than the minimum help my credit score?

Yes, indirectly. Lower balances lower your utilization ratio, a major score factor. Under 30% helps; under 10% helps more. Paying on time matters most of all.

Mini Roast Disclaimer

We roast the number, not you. The 24% APR, however, has been roasting you every single month.

Reality Check

This assumes a fixed APR, a fixed payment, and no new purchases. Variable rates move with the prime rate, promotional rates expire, and late payments trigger penalty APRs near 30%. If the balance is unmanageable, a nonprofit credit counseling agency can negotiate rates — that is a real option, not a failure.