Credit Card Payoff Calculator

How to Use This Credit Card Payoff Calculator

Enter each credit card you're carrying a balance on — balance, APR, and minimum payment settings. You can add up to five cards. The calculator runs both the debt avalanche and the debt snowball method at the same time on the same set of cards, so you can see exactly how much money and time each strategy costs for your specific situation.

Add any extra monthly payment you can commit on top of your minimums, and the tool applies it to the priority card under each strategy. If you have a one-time lump sum coming — a tax refund, a bonus, a reimbursement — enter it in the lump sum field and it gets applied in the first month. Everything saves automatically to your browser, so you can come back next month and see progress without re-entering anything.

How Credit Card Interest Is Calculated

Credit card interest compounds daily on your outstanding balance. Your card's APR is divided by 365 to get a daily periodic rate, and that rate is applied to each day's ending balance. The daily charges are then summed across the billing cycle and appear on your next statement. Unlike a mortgage or car loan, there's no fixed amortization schedule — the issuer recalculates interest every cycle based on whatever balance you're carrying.

For readability, this calculator uses the simplified monthly equivalent: it applies one twelfth of your APR to each card's starting balance each month, which is what most educational debt calculators and Federal Reserve examples do. In practice this deviates less than one and a half percent from the exact daily-rate figure your issuer would bill. If you need statement-level precision, expect your real numbers to be within a few dollars per month of what this tool shows.

This matters most when you understand the minimum payment trap: at a 22 percent APR, the monthly interest on a $5,000 balance is about $92 — if your minimum payment is only $100, just $8 of that goes to actually paying down what you owe. That's why minimum-only payoff timelines stretch into decades.

Snowball vs Avalanche: Which Is Better?

The debt avalanche method pays off the card with the highest APR first while paying the minimum on everything else. Mathematically, this always costs the least in total interest, because your extra dollars are fighting the most expensive debt first. On the numbers alone, avalanche wins every time.

The debt snowball method pays off the card with the smallest balance first, regardless of APR. You get a visible win sooner — a card closed, one less statement to worry about — and that emotional momentum is meaningful. A 2012 Northwestern Kellogg study by David Gal and Blakeley McShane, published in the Journal of Marketing Research, found that closing accounts was a better predictor of finishing debt repayment than the dollar size of the balance closed. In other words, snowball helps more people actually finish, even though avalanche is cheaper.

A 2023 analysis by Hamilton in the Southern Economic Journal quantified the cost: households using snowball pay roughly 1.8 to 4.3 percent more in interest than they would with avalanche, totaling an estimated $46 to $54 billion in extra interest transferred to lenders nationally each year. For most individual cases, the gap is a few hundred dollars to a couple thousand dollars over the full payoff. Whether that's worth the psychological benefit is your call — and this calculator shows you exactly what the gap is for your cards, so you can decide with the real number in front of you.

The Minimum Payment Trap

Most major US issuers calculate the minimum payment as roughly one percent of your statement balance plus accrued interest and fees, with a dollar floor that varies by issuer. Chase uses a $40 floor, Capital One $25, Citi $41. This structure means that as your balance drops, so does the minimum — which sounds fair until you do the math. At a 22 percent APR, the majority of any minimum-only payment goes straight to interest for the first several years of the balance. Principal barely moves.

That's why the Credit Card Act of 2009 requires your statement to display a 36-month payoff alternative: the dollar payment that would clear the balance in three years. That figure almost always saves thousands of dollars in interest versus paying the minimum. In this calculator, the "Extra monthly payment" field is how you close that gap — add $100 or $300 a month on top of your minimums and watch the payoff timeline collapse.

Promotional 0% APR and Balance Transfers

Balance transfer cards typically offer 0 percent or very low promotional APRs for 12 to 21 months. After the promo window ends, the standard APR applies to whatever balance remains. This calculator supports promotional periods per card: click the "Has a 0% intro APR" checkbox on any card row to reveal the promo APR and months-remaining fields. The simulator automatically switches to the standard APR once the promo expires.

Balance transfer fees — commonly 3 to 5 percent of the transferred balance, charged upfront — are not modeled separately here. If you're planning a transfer, add the fee to the balance field manually. For example, transferring $5,000 with a 3 percent fee means entering $5,150 as the balance.

Privacy and Local Storage

Every calculation runs entirely in your browser. Your balances, APRs, and minimum payment settings are saved to your browser's local storage so you don't have to re-enter them on return visits — but that saved copy lives only on this device, in this browser. Nothing is sent to any server, and nothing is saved in any database we control. Click "Clear all" at any time to wipe the local copy.

The optional "Copy link" button generates a URL carrying just the numbers you entered — useful if you want to view the same scenario on your phone later, or share it with a spouse. The link doesn't touch our servers either; it's just a serialized version of your inputs.

Methodology Notes

Default APR is set to 22 percent, a rounded figure drawn from the Federal Reserve's G.19 report (21.52 percent on accounts assessed interest, February 2026) and LendingTree's April 2026 survey of new card offers (23.75 percent average). Default minimum payment is the greater of $25 or 1 percent of current balance plus monthly interest — matching the pattern published by Chase, Capital One, and Citi within a small tolerance. You can override these defaults per card.

The simulator pays minimums on every card each month, then applies any extra payment plus rolled-forward minimums from already-paid cards to the priority target under each strategy. When a card is paid off, its original minimum rolls into the extra payment pool for the next target — this is the "snowball" effect that gives the method its name, and avalanche uses the same rollover mechanic applied to whichever card has the highest APR.

For the full academic background, see Gal & McShane (2012), "Small Victories: Can Small Victories Help Win the War? Evidence from Consumer Debt Management," Journal of Marketing Research, 49(4): 487–501; and Hamilton (2023), "Two steps forward, one step back," Southern Economic Journal, 89(3): 830–859. Current APR averages come from the Federal Reserve G.19 release and LendingTree's credit card rate study.