Credit card minimum payment calculator guide
Credit-card minimums often decline with the balance, which can make payoff much slower than keeping a fixed payment. Issuer formulas vary and may combine interest, fees, a balance percentage, and a dollar floor.
The calculator models a percentage-or-floor minimum and compares it with a fixed payment.
How to use the credit card minimum payment calculator
- Enter statement balance and APR: Use current account figures.
- Enter minimum terms: Approximate the issuer percentage and floor.
- Enter a fixed comparison: Choose a sustainable payment above the minimum.
- Stop new charges: Set charges to zero for a payoff plan.
Formula and variables
Interest and any modeled new charges are added before payment.
Payment = greater of balance percentage or dollar floor- APR — Annual percentage rate
- Determines monthly interest.
- Floor — Minimum dollar payment
- Lower bound for the modeled minimum.
Worked example: declining minimum
A $5,000 card charges 18.99% APR with a 2% minimum.
- Fixed comparison
- $150 monthly
- Model the declining minimum.
- Model a constant $150 payment.
- Compare duration and interest.
Result: The fixed payment generally pays off sooner
Continued purchases can prevent payoff.
Understanding your results
Minimum payoff
Modeled time using the entered percentage and floor.
Fixed interest saved
Interest difference from maintaining the fixed amount.
Assumptions
- APR and minimum formula remain constant.
- Payments arrive monthly.
Limitations
- Issuer formulas, fees, and compounding can differ.
- Promotional and penalty APR changes are excluded.
Common mistakes
- Paying only the minimum without reviewing payoff disclosures.
- Continuing new charges.
- Using a fixed payment below monthly interest and charges.
Practical use cases
Compare repayment choices
Change one assumption at a time and compare total cost as well as the monthly payment.
Plan before borrowing
Estimate the future obligation before accepting loan terms.
Planning and decision guide
Use your statement disclosure
Statements generally show a minimum-payment payoff warning based on issuer assumptions.
Hold the payment steady as the minimum falls
Maintaining the starting dollar amount accelerates principal reduction.
Prioritize on-time required payments
Never redirect another account’s required minimum to accelerate this card.
Frequently asked questions
How is a credit-card minimum calculated?
The formula varies by issuer and may use a percentage, interest and fees, and a dollar floor.
Why does minimum-only repayment take so long?
The required dollar payment often declines as the balance falls.
What if the payment does not cover interest?
The balance will not decline and may grow.
Do new purchases change the result?
Yes. New charges add balance and can prevent payoff.
Sources and review
- Credit card minimum payment calculator — Consumer Financial Protection Bureau. Accessed 2026-07-10.
Reviewed 2026-07-10.