Amortization Schedule Calculator
Calculate your loan amortization schedule with monthly payment breakdowns including principal, interest, and remaining balance.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator generates a full amortization schedule for a fixed-rate loan. Follow these steps:
- Enter Loan Amount – The total principal borrowed (e.g., 200000 for $200,000).
- Enter Annual Interest Rate – As a percentage (e.g., 5.5 for 5.5%). Must be greater than zero.
- Enter Loan Term – In whole years (e.g., 30 for 30 years).
- Set Start Date – The first payment date (default is 2025-01-01).
- Click "Calculate Amortization Schedule" – The form validates inputs and computes results.
Outputs:
- Monthly Payment – Fixed amount due each month.
- Total Interest Paid – Sum of all interest over the loan term.
- Total Cost – Principal plus total interest.
- Amortization Schedule Table – Shows each payment: number, date, payment amount, principal portion, interest portion, and remaining balance.
Note: All monetary values are in dollars. The calculator uses the standard amortization formula: M = P × [r(1+r)^n] / [(1+r)^n – 1].
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Frequently Asked Questions
An amortization schedule is a table detailing each periodic payment on an amortizing loan, showing the amount going toward principal and interest, and the remaining balance after each payment.
The monthly payment is calculated using the formula M = P * [r(1+r)^n] / [(1+r)^n - 1], where P is the loan principal, r is the monthly interest rate, and n is the number of payments.
Yes, this calculator works for any fixed-rate amortizing loan, such as mortgages, auto loans, or personal loans.
