Mortgage calculator
FinanceEstimate the monthly payment of a mortgage including principal, interest, insurance and taxes.
Your results
Estimate your monthly mortgage payment including taxes and insurance.
How the payment is calculated
We use the French amortisation formula for principal and interest, then add a percentage of the loan for insurance and another for taxes, both divided by 12.
What does PITI mean?
PITI stands for Principal, Interest, Taxes and Insurance. The total monthly payment usually includes all four components and is what lenders use to qualify borrowers.
Frequently asked questions
Answers to the most common questions about this tool.
How is this result calculated?
It applies the relevant financial formula to the amounts, terms, and rates you enter.
Does the result include every cost?
Not necessarily; fees, taxes, insurance, and third-party charges may be excluded.
Can I use this as a final financial quote?
No. Use it to compare scenarios and confirm final terms with the relevant provider.
What information do I need to enter?
Enter amounts, rates, and time periods consistently.
What assumptions does the calculation make?
It assumes the values you enter remain constant for the selected scenario.
Sources and methodology
Methodology: Mortgage payment
Applies amortization for principal and interest and adds insurance and taxes as annual percentages of principal divided by 12.
Insurance and tax percentages are user inputs, not quotes.
Last reviewed
July 15, 2026