Track balances, interest, and payoff speed with flexible entries. See savings from every added payment. Build clearer monthly repayment plans with confidence and control.
Monthly interest = Current Balance × (APR ÷ 12)
Total due before payment = Current Balance + Interest + Monthly Fees + New Charges
Standard ending balance = Total Due Before Payment − Minimum Payment
Accelerated ending balance = Total Due Before Payment − (Minimum Payment + Extra Payment)
Interest saved = Standard Total Interest − Accelerated Total Interest
This model helps estimate how extra payments reduce balance faster, shorten payoff time, and lower total interest cost over the repayment period.
An extra payment reduces the principal faster. That lowers future interest charges, shortens payoff time, and can significantly reduce the total amount repaid over time.
No. It is an estimate tool. Your issuer may apply fees, compounding rules, payment dates, or promotional rates differently from this simplified model.
Yes. The new charges field lets you model continued card usage. Higher new charges may slow payoff or even prevent full repayment.
If the payment is too small compared with interest, fees, and new charges, the balance may shrink very slowly or keep growing instead.
Yes. This version estimates the monthly rate by dividing APR by twelve. It gives a practical planning approximation for many common scenarios.
Usually that helps. Avoiding new charges lets more of each payment reduce principal, which improves interest savings and accelerates payoff.
Exports make it easier to compare repayment options, save snapshots, share numbers with advisers, or track your payoff strategy over time.
Use it to test realistic payment plans before committing. Small added payments can create meaningful long term savings when applied consistently.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.