About this calculator
Estimate principal-and-interest mortgage payments from amount, rate and term.
This is an educational estimate and excludes taxes, insurance, fees and changing rates.
Formula
Monthly principal-and-interest payment uses the standard amortisation formula.
Example
Use the loan amount after deposit/down payment, not necessarily the property price.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.