WibbyTools

Mortgage Calculator

Estimate your monthly mortgage payment before you talk to a lender. Adjust the price, down payment, rate and term and see the numbers change instantly.

Options

How it works

  1. 1

    Enter price and down payment

    The loan amount is the price minus what you put down.

  2. 2

    Set rate and term

    Annual interest rate and the number of years, usually 15 or 30.

  3. 3

    Compare scenarios

    Change any value to see the monthly payment and total interest update.

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Frequently asked questions

No. It shows principal and interest. Add property tax and insurance to estimate the full monthly cost.

How a mortgage payment is calculated

Fixed-rate mortgages use an amortisation formula: every monthly payment is the same, but in the early years most of it pays interest and only a small part reduces the balance. Over time the split reverses.

Small changes have a big effect over 30 years. A lower rate, a larger down payment or a shorter term can cut tens of thousands from the total interest, which the calculator shows alongside the monthly payment.

The estimate covers principal and interest only. Property tax, insurance, HOA fees and mortgage insurance vary by location and lender, so the real monthly cost will be higher. This is not financial advice.