Free Mortgage Calculator
Calculate a monthly mortgage payment with tax and insurance, plus total interest.
What is the Mortgage Calculator?
Calculate a monthly mortgage payment with tax and insurance, plus total interest.
The loan is the price minus your down payment percentage, and the payment is the standard level-payment amortization formula using the monthly rate and term. Property tax (a percentage of price per year) and yearly insurance are divided by twelve and added to give an estimated monthly total.
Borrowing is easier to judge once you can see the real cost: the monthly payment, the total interest and how long it takes to be free of the debt.
How to use the Mortgage Calculator
Using the mortgage calculator takes a minute or two. Your entries are saved in this browser, so you can come back later and carry on.
Step 1
Enter the amount, interest rate and term. Pick your country at the top so the currency matches.
Step 2
Compare the monthly payment, total interest and payoff date in the result.
Step 3
Change one number at a time, such as a higher payment, to see what it saves.
Tips for better results
Compare the principal-and-interest payment with the full monthly total, since tax and insurance can add a large amount. Try a shorter term to see how much total interest falls, then check whether the higher payment fits your budget.
Compare offers using the total cost, not just the monthly payment.
Even a small extra payment each month can shorten the term noticeably.
Privacy and where your data goes
Everything you type into the mortgage calculator stays on your own device. Zapxa does not receive your numbers or documents. If you clear your browser data, your saved entries will be removed, so download a PDF of anything you want to keep.
Frequently asked questions
Does the result include mortgage insurance or HOA fees?
No. Only principal, interest, property tax and home insurance are included. Add any other recurring costs separately.
Why is so much of the early payment interest?
Interest is charged on the outstanding balance, which is largest at the start. As the balance falls, more of each fixed payment goes to principal, as the yearly schedule shows.
Is the mortgage calculator free?
Yes. It is free to use with no signup, no watermark and no usage limits.
Is my data private?
Yes. Your inputs are processed in your browser and saved only in its local storage. They are not uploaded to our servers.
Does it work on mobile?
Yes. Zapxa works on phones, tablets and desktops. Use the print button or download a PDF to keep a copy.
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