# Repayment Calculator

> Calculate loan repayment schedules and see how much time and interest you can save by making extra monthly payments.

Page: https://askcalculators.com/calculator/repayment-calculator/
Definition: https://askcalculators.com/calculator/repayment-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/repayment-calculator/schema.json
Version: 7.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/repayment-calculator/?amount=20000&rate=6&term=5&extraPayment=0

## Inputs
- amount: Loan Amount; type=number; optional; default=20000
- rate: Interest Rate; type=number; optional; default=6
- term: Original Term (Years); type=number; optional; default=5
- extraPayment: Extra Monthly Payment; type=number; optional; default=0

## Outputs
- result: Result; format=text; primary

## Formula
Monthly payment = P·r·(1+r)^n ÷ ((1+r)^n−1); total repayment and interest follow from payment × number of months.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.