How it works
Compare two monthly amortization schedules, adding your extra payment to the regular rounded payment.
Input definitions
- Remaining principal
- Enter the value in the labeled unit.
- Nominal annual interest (%)
- Enter the value in the labeled unit.
- Remaining scheduled months
- Enter the value in the labeled unit.
- Extra amount paid each month
- Enter the value in the labeled unit.
A worked example
- Remaining principal
- 1200
- Nominal annual interest (%)
- 0
- Remaining scheduled months
- 12
- Extra amount paid each month
- 100
Assumptions & limits
Single-currency planning model using entered rates; two-decimal half-up currency rounding. No taxes, regulatory APR, live quote or investment-return prediction unless explicitly stated. Monthly compounding and cent rounding; extra repayments must be permitted by the lender. No prepayment fees.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Are these investment and borrowing results guaranteed?
No. These are deterministic estimates from the inputs and stated method, not predicted returns or lending offers. Actual fees, tax, timing and contractual terms may differ.
How does the Extra loan payment savings tool work?
Compare two monthly amortization schedules, adding your extra payment to the regular rounded payment.
What are the assumptions and limits of Extra loan payment savings?
Single-currency planning model using entered rates; two-decimal half-up currency rounding. No taxes, regulatory APR, live quote or investment-return prediction unless explicitly stated. Monthly compounding and cent rounding; extra repayments must be permitted by the lender. No prepayment fees.