Credit Card Interest vs Minimum Payment Trap Calculator
Calculate how long debt lasts with minimum payments, how much total interest you pay, and how extra monthly payments accelerate payoff. Includes visual debt payoff chart.
Minimum payment only
Payoff time: 1200 months
Total paid: $116,474
Total interest: $111,135
Minimum + extra payment
Payoff time: 52 months
Total paid: $12,014
Total interest: $4,014
Payoff acceleration impact
Time saved
1148 months
Interest saved
$107,121
Debt payoff chart
X-axis: month progression (up to month 1200) / Y-axis: remaining balance.
This is an estimate based on fixed APR and payment assumptions. Real card terms may include penalties, changing rates, and fee structures.
Why minimum-only payment can become expensive
Minimum payment formulas are designed to keep accounts current, not to eliminate debt quickly. When APR is high, a large share of each payment can go to interest first.
This calculator compares minimum-only payoff vs minimum + extra monthly payment, then highlights time and interest differences.
Quick interpretation matrix
| Question | Metric to watch |
|---|---|
| How long until debt-free? | Payoff months |
| How expensive is minimum-only? | Total interest paid |
| What if I add a fixed extra amount? | Months saved + interest saved |
| Is payoff stalling? | Negative amortization warning |
Practical debt strategy flow
Step 1: Baseline debt reality
Run minimum-only to estimate true payoff horizon and interest burden.
Step 2: Add manageable extra payment
Start with a realistic extra amount and observe acceleration.
Step 3: Iterate until target horizon
Adjust extra payment to hit your desired debt-free timeline.