Mortgage Calculator
Estimate your monthly mortgage payment, total interest and payoff date — with property tax, insurance and extra payments.
- Runs in your browser
- No upload on server
- Free, forever
- Enter home price
- Set rate and term
- See your payment
Loan details
How this works — and why it's private
- Monthly payment uses the standard amortization formula P × r ÷ (1 − (1 + r)−n), then adds your property tax and insurance, divided into monthly amounts. Extra payments are subtracted from the loan balance each month — so you pay less interest and finish sooner.
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No account, no email, no tracking — just a 1–5 number.
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