Extra payment calculator

The answer

Adding $50.00 a month to a $200.00 payment on a $6,000.00 balance at 22.99% gets you there 1 yr 1 mo sooner, around Jun 2029, saving $898.58 in interest.

Interest saved
$898.58
Without the extra
3 yr 10 mo · $3,011.78

An estimate from the inputs shown, not a promise of a particular date. How we calculate this.

The answer above is the same payoff engine run with the extra and again without it. The difference between those runs is the whole answer.

Your card

It assumes the extra is paid every month for the whole term. A single lump sum does something different and usually less.

Estimated result

1 yr 1 mo sooner

Estimated debt-free date Jun 2029

Interest saved

$898.58

Without the extra

3 yr 10 mo · $3,011.78

Assumptions

  • Interest accrues once a month, before that month's payment.
  • The APR stays at 22.99% for the whole term.
  • No new spending, fees, penalty rate or promotional rate.
  • You pay the payment plus the extra in full, on time, every month.
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Why a small extra does more than it looks like it should

In this model everything above the month's interest reduces the balance, and balance you have removed stops accruing interest for the entire remaining term. The saving compounds against the length of the plan, which is why the effect is largest on long, high-rate balances and slight on brief balances.

On a real card, an amount paid above your minimum is allocated to your highest-rate balance ahead of the others under federal rules, and the minimum itself is allocated however your issuer chooses. With a single rate and no fees those come to the same thing; with a cash advance or a promotional transfer sitting on the same card, they do not.

It also shortens the term, and a shorter term is fewer months of interest charges at all.

Sources

  1. Consumer Financial Protection Bureau — Regulation Z, 12 CFR §1026.53 — Allocation of payments (tier 1)
  2. Consumer Financial Protection Bureau — How does my credit card company calculate the amount of interest I owe? (tier 1)

Our source and corrections policy explains how these are chosen.

Related

Reviewed 2026-09-17. Every figure on this page is produced by the same payoff engine the Dang! Payoff app runs, from the inputs shown, and is an estimate that holds only if the stated assumptions hold. The dates printed here were computed from a plan starting September 2026; the calculator re-anchors to the current month in your browser, so a date you read with JavaScript disabled is the one for that starting month rather than for today.

Dang! Payoff is a manual-entry debt payoff planner and tracker from Dang Apps LLC. It is not a lender, credit counselling agency, debt-relief, debt-management or debt-settlement service, and nothing here is financial, legal or tax advice or a recommendation about your situation. Your issuer’s or lender’s own terms govern your account.

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