Mortgage Calculator
Compare the monthly payment, interest cost, and remaining balance of a long-term home loan.
Purchase price, equity, and loan principal
The calculator subtracts your equity or down payment from the purchase price. The remainder is the modeled loan principal. The monthly payment is level: interest takes a larger share at the beginning, while more of each later payment reduces principal as the balance falls.
How to compare mortgage scenarios
- Select a currency and enter the purchase price and equity.
- Add the annual interest rate and planned total amortization term.
- Set a fixed-rate period no longer than the total term.
- Enter a possible annual extra payment and calculate the scenario.
Example: look beyond the monthly payment
A 400,000 purchase with 80,000 of equity leaves a 320,000 loan. At 4% annual interest over 30 years, the scheduled payment is about 1,528 per month. After ten years without extra payments, roughly 252,000 remains. That balance matters when you test a renewal or refinancing rate.
Fixed-rate period and total term are different
The total term determines the initial scheduled payment. The fixed-rate period only determines when the calculator reports a remaining balance. The model keeps the entered rate unchanged until payoff. Check actual renewal rates, contractual prepayment limits, closing costs, fees, taxes, and insurance separately.