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Mortgage Calculator
Monthly payment, total interest, loan amount
Importo mutuo
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Rata mensile
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Interessi totali
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Totale pagato
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How the payment is calculated
Our tool uses the French amortization formula, the standard for mortgages: the monthly payment is constant and composed of a principal portion and an interest portion. Initially you pay mostly interest, by the end mostly principal.
Formula: payment = principal × (r × (1+r)^n) / ((1+r)^n − 1), where r is the monthly rate (annual rate / 12 / 100) and n is the total number of payments.
Mortgage tips
- Down payment: typically 20% of the property value (banks finance up to 80%)
- Term: longer = lower payment but more total interest
- Rate: fixed (certain payment) or variable (risk/opportunity)
- APR vs interest rate: always look at the APR, which includes additional costs
Frequently asked questions
What is APR?
APR (Annual Percentage Rate) includes the interest rate plus commissions, fees and insurance. It's the true cost of the mortgage, always higher than the advertised rate.