Mortgage calculator
See what a home really costs each month. Adjust the price, your deposit, the interest rate and the term — the numbers update as you move.
Principal and interest only — property taxes, insurance and any HOA fees are extra.
Year-by-year breakdown
How much of each year goes to the loan itself, and what is left to pay.
| Year | Principal paid | Interest paid | Balance left |
|---|---|---|---|
How this is worked out
What the monthly payment covers
The payment shown is principal and interest on a fixed-rate, fully amortising loan. Property taxes, home insurance, mortgage insurance and HOA fees are not included, so your real bill will be higher.
The formula
Each month you pay P = L × c(1 + c)ⁿ ÷ ((1 + c)ⁿ − 1), where L is the loan amount, c is the yearly rate divided by twelve and n is the number of months. It is the same calculation the Nestly mobile app uses.
How much should I put down?
A bigger deposit means a smaller loan and less interest overall. Many lenders ask for at least 20% of the price to avoid mortgage insurance — move the slider to see the difference.
These figures are an estimate for guidance only and are not a mortgage offer or financial advice. Talk to a lender for a quote based on your circumstances.