Credit Card Minimum Payments: A Declining-Payment Example
Paying the minimum can keep a balance outstanding for a long time when the required amount falls as the balance shrinks. To calculate that effect, a balance and APR are not enough: you also need the issuer’s minimum-payment formula.
The rule used in this illustration
This is a made-up minimum-payment policy for comparison, not the policy of a named card issuer. Start with $5,000 at 24% APR. Each month:
- Charge interest equal to 2% of the opening balance, rounded to cents.
- Calculate 1% of that opening balance, rounded to cents, and add the interest.
- Use that sum or $25, whichever is larger, capped at the amount owed.
There are no fees, new purchases or APR changes. Payments occur after that month’s interest. The minimum-plus-$50 case adds $50 to the recalculated minimum each month, capped at the amount owed.
| Month | Opening balance | Interest | Payment | Closing balance |
|---|---|---|---|---|
| 1 | $5,000.00 | $100.00 | $150.00 | $4,950.00 |
| 2 | $4,950.00 | $99.00 | $148.50 | $4,900.50 |
Declining and fixed payments are different plans
| Payment rule | First payment | Months | Total interest |
|---|---|---|---|
| Illustrative minimum | $150.00 | 234 | $8,886.94 |
| Illustrative minimum + $50 | $200.00 | 67 | $3,088.97 |
| Fixed $150 each month | $150.00 | 56 | $3,322.17 |
| Fixed $200 each month | $200.00 | 36 | $2,000.57 |
The minimum-plus-$50 plan and the fixed $200 plan start with the same payment. They diverge because one declines and the other stays level. That is why an article should not call both of them “paying $50 extra” without defining the baseline.
The fixed $200 case takes 36 payments in this cents-rounded model: 35 payments of $200 and a final $0.57. The tiny last payment explains why a rounded estimate might say roughly 35 months.
Compare with your own statement
Find the repayment disclosure on your statement. The CFPB explains the minimum-payment and three-year repayment figures, which assume no new purchases. Use the card’s actual agreement for its minimum formula, fees and applicable APRs.
If your statement differs from this illustration, do not substitute our rule for the issuer’s. The formula, daily interest and payment dates may differ. Keep a record of which assumptions each estimate uses.
Reproduce the fixed and declining-payment examples
The fixed-payment calculator reproduces the $150 and $200 fixed-payment rows. The separate declining-minimum comparison lets you choose a percentage rule and a dollar floor; it does not read or infer your issuer’s policy.
For the declining rows above, enter $5,000, 24% APR, the rule that adds monthly interest to a percentage of the balance at the start of each month, 1% and a $25 floor. Compare $0 and $50 extra, keeping all other terms unchanged. Set the fixed-payment comparison to $200 to reproduce that alternative. Choosing a percentage of opening balance without adding interest is a different rule.
Use the formula from your own contract for another scenario and compare it with the statement. If the required payment is unaffordable, consult the CFPB guidance on contacting your card company.
Sources and method
Educational content for U.S. consumers. Numerical examples are our own calculations under the stated assumptions. Methodology and limitations.