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Credit Card Minimum Payment vs Payoff Calculator

Months and interest if you pay only the minimum versus a fixed extra payment.

Page updated 2026-09-04.

Credit Card Minimum Payment vs Payoff Calculator visual
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Default $6,500.

Default 21.99%.

Default 1% plus interest.

Compared with minimum-only. Default $250.

Calculated Results

Months at fixed payment

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Months at minimum

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Interest at fixed

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Interest at minimum

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The real cost gap between minimum and fixed payments

A $6,500 balance at 21.99% APR, paid at a fixed $250/month, clears in 36 months and costs $2,409.58 in interest. Paid at the minimum instead (the greater of $25 or 1% of balance, plus that month's interest), the same balance takes 256 months -- over 21 years -- and costs $10,844.58 in interest, more than the original balance.

That's a difference of 220 months and $8,435.00 in interest between the two payment strategies on the exact same starting balance and rate. Minimum payments on high-APR debt are designed to shrink slowly: as the balance drops, the 1%-of-balance minimum drops too, which is why the payoff timeline stretches out for decades rather than years.

The fixed-payment path is also self-limiting in a useful way -- $250/month stays constant even as the balance shrinks, so more of each payment goes toward principal every month, accelerating payoff instead of dragging it out.

Why minimum-only payoffs take so long

Minimum is the greater of $25 or 1% plus monthly interest (configurable). Not issuer terms. Real issuer minimum-payment formulas vary and are disclosed in your card agreement -- this uses a common structure, but your actual card may calculate the minimum slightly differently.

Balance must be greater than zero for either simulation to run. The simulation caps at 600 months (50 years) as a safety limit for extreme minimum-payment scenarios that would otherwise never mathematically resolve.

If the APR itself (21.99% here) is the real problem, a 0% balance-transfer offer changes this math entirely -- see the Credit Card Balance Transfer Savings Calculator before committing to either payoff strategy.

If this is one of several balances

This models a single card in isolation. If you're carrying more than one balance, the Debt Payoff Snowball vs. Avalanche Calculator handles the two-debt prioritization question.

To see exactly how the APR itself compounds against a running balance, independent of payment strategy, the Credit Card APR & Interest Calculator isolates that piece.

Frequently Asked Questions (FAQ)

Why does the minimum-payment path take 256 months instead of a fixed 36?

Because the minimum payment shrinks along with the balance (1% of a smaller balance is a smaller dollar amount), so the payoff decelerates over time instead of staying constant. A fixed $250/month payment doesn't shrink, so it consistently chips away at principal every month.

Why is minimum-payment interest ($10,844.58) higher than the original balance ($6,500)?

Because 21.99% APR compounds monthly over 256 months (more than 21 years) of a slowly-declining balance. The longer a balance sits at a high rate, the more total interest accrues relative to the original principal.

Is the minimum-payment formula used here exactly what my card issuer uses?

Not necessarily. Minimum is the greater of $25 or 1% plus monthly interest (configurable). Not issuer terms. Card issuers disclose their specific minimum-payment formula in your cardholder agreement, and it may differ slightly from the common structure modeled here.

What's the fastest way to close the gap between these two numbers?

Pay more than the minimum every month, even a modest fixed amount above it. The gap between 36 months and 256 months in this example comes entirely from the difference between a $250 fixed payment and a shrinking ~1%-of-balance minimum.

Does this account for new purchases added to the balance?

No. Both simulations assume no new charges are added -- it's a pure payoff simulation on the $6,500 starting balance. New purchases each month would extend both timelines further.

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