Inputs
Results Summary
Enter inputs and press Calculate to view results.
Formula Used
Monthly rate: i = APR / 100 / m, where m is compounding periods per year.
Balance after deferment (months d): if accruing, B = P × (1 + i)d; otherwise B = P.
Payment for remaining N months: if i > 0, A = B × i / (1 − (1 + i)−N); if i = 0, A = B / N.
Amortization (repayment months): interest = balance × i; principal paid = A − interest; new balance = balance − principal paid.
How to Use
- Enter the principal, annual rate, total term, deferment months, and compounding frequency.
- Choose whether interest accrues during deferment.
- Click Calculate to generate the payment, totals, and comprehensive schedule.
- Export your amortization schedule as CSV or a PDF of the results area.
- Use the chart to visualize balance and cumulative interest over time.
Balance & Interest Chart
Amortization Schedule
| Month | Phase | Payment | Interest | Principal | Balance | Cumulative Interest |
|---|
Example Scenarios
| Principal | APR | Term (mo) | Defer (mo) | Accrue? | Balance After Defer | Payment | Total Interest |
|---|
FAQs
1) What is a deferred payment loan?
A loan that starts with a pause in payments. During the pause, interest may accrue and capitalize depending on the agreement.
2) Does interest always accrue during deferment?
No. Some programs waive interest during deferment. Use the toggle to model either case.
3) How are payments calculated after deferment?
The balance after deferment becomes the new principal for the remaining months. Payments follow the standard amortization formula.
4) What if my APR is zero?
Payments are simply the balance divided by the remaining months. Interest stays at zero in all periods.
5) Can I change compounding frequency?
Yes. Set the compounding periods per year. Monthly is common, but quarterly or annual compounding can be modeled.
6) Why does the last payment sometimes differ slightly?
Minor rounding adjustments ensure the final balance reaches zero. The schedule corrects in the last month.