Stable Numbers
Loan Repayment Calculator
Work out monthly repayments, total interest and how long it will take to clear the balance. Add an extra monthly payment to see how much time and interest you can save.
Nominal APR with monthly compounding.
You can mix years and months.
Added on top of the standard repayment.
Used to label the schedule months.
Uses the standard annuity formula with monthly compounding. Zero interest is handled exactly. If an extra payment is set, the term shortens and totals update.
Show amortisation schedule
| # | Date | Payment | Interest | Principal | Extra | Balance |
|---|---|---|---|---|---|---|
Final payment adjusts so you do not overpay. Minor rounding differences can occur.
About this calculator
The monthly repayment is based on your APR and term using the standard annuity formula. Interest is calculated monthly on the remaining balance. If you add an extra monthly payment, the balance falls faster which shortens the term and cuts the total interest.
Zero interest is handled exactly. In that case, the repayment is simply the amount divided by the number of months. The final month’s payment is adjusted so you do not overpay.
Use this tool for personal loans, car finance and planning overpayments on mortgages. It is a planning aid. Real lenders may round at different steps which can shift pennies.
Explore more in the finance tools hub.