Credit Card Payoff Calculator

Introduction

This Credit Card Payoff Calculator applies one monthly payment pool across two or more card balances until all reach zero. Enter each balance and APR, choose avalanche (highest rate first) or snowball (smallest balance first), and set the total you can pay each month. It shows payoff order, months to debt-free, and total interest across the portfolio.

Who this calculator is for

Households juggling multiple revolving accounts who finally have $400 per month to send toward plastic belong here. The classic case: $4,200 at 24% and $2,800 at 18% with one combined budget and uncertainty about which card gets the extra dollars after minimums.

Debt counselors demonstrating strategy differences without spreadsheet macros use this page daily. If you only carry one balance, the single-card Credit Card Calculator is simpler.

What it estimates

Each month every card accrues interest on its balance. Minimums may be calculated per card or you allocate the full $400 according to strategy: pay minimums everywhere, then send surplus to the priority card. When a card hits zero, its payment rolls to the next target. The loop continues until all balances clear.

Promotional rates, balance transfer fees, and new spending mid-plan are not modeled unless you edit balances manually month to month. Fixed monthly pool is the core assumption.

Inputs explained

List cards from highest stress to lowest if that helps you enter data; strategy fields control payoff math, not display order.

• Card balances: Current owed on each account separately, such as $4,200 and $2,800.
• APR per card: Purchase APR for each line; use penalty rate if applicable.
• Total monthly payment: Sum available for all cards together, here $400.
• Strategy: Avalanche targets highest APR after minimums; snowball targets smallest balance for psychological wins.
• Minimum payment rule: Percent of balance plus floor, or flat minimum per issuer if the tool supports it.

How to read the results

Payoff date is when the last card reaches zero. Total interest aggregates every card's interest lines. Strategy comparison may show avalanche saves dollars while snowball finishes one card sooner. Neither is wrong if the one you stick with is the one you run.

Read the month when the first card clears under snowball; that quick win matters for some borrowers even if interest is slightly higher. See snowball versus avalanche for behavior notes.

Worked example

Card A: $4,200 at 24% APR. Card B: $2,800 at 18% APR. Pay $400 total monthly. Under avalanche, surplus after minimums attacks the 24% card first. Payoff lands near twenty-two months with total interest around $1,450. Snowball clears the $2,800 card first in roughly eight months, then rolls full $400 toward the larger balance, finishing a month or two later with slightly more interest.

Raise the pool to $500 and recalculate. Months drop sharply because fixed interest on $7,000 combined burns less of each dollar. Record the delta to negotiate a side gig or trim a subscription.

Practical use cases

Merge wedding debt spread across two rewards cards before a mortgage application. Test whether a $3,000 balance transfer at 0% for eighteen months should receive priority payments first.

After cards clear, redirect the same $400 in the Budget Calculator toward savings so lifestyle creep does not refill balances.

Limitations and related tools

Issuer minimum formulas that shrink as balance falls change real schedules slightly. Cash advance buckets at different rates need separate manual entries. Settlement offers and charge-offs are out of scope.

Installment debt mixed with cards belongs in the Debt Payoff Calculator. Consolidation into one personal loan is modeled in the debt consolidation calculator and Personal Loan Calculator.

How It Works

1. Add each card. Enter balance and APR for every revolving account you are paying down together.
2. Set monthly pool. Type the total you can pay across all cards, not per card.
3. Pick avalanche or snowball. Choose strategy and calculate to see order and timeline.
4. Compare strategies. Run the other strategy with the same inputs and keep the plan you will follow consistently.

Formula and methodology

The Credit Cards Payoff Calculator uses this identity for the scenario you enter. A bank, payroll system, or tax program may round on a 360-day year or average daily balance, so a statement can differ by a small amount.