How this calculator works & sources ↓
See the real monthly payment on a home loan, and how much of what you pay ends up being interest.
Switching region updates the currency and swaps in typical starting figures for that country — every number stays fully editable.
See the real monthly cost of a home loan, and how much of it is interest over the life of the loan.
Principal vs interest
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For a repayment mortgage, the monthly figure uses the standard amortisation formula based on the loan amount, monthly interest rate and number of monthly payments.
Monthly payment = P × [r(1+r)ⁿ] ÷ [(1+r)ⁿ − 1], where P is the loan amount, r is the monthly rate and n is the number of payments. At a 0% rate, the loan amount is divided evenly across the term.
Total paid is the monthly payment multiplied by the number of payments. Illustrative total interest is total paid minus the original loan amount. Fees, taxes, insurance, changing rates and lender-specific terms are not included.
Deposits, stamp duty, legal fees, surveys, mortgage fees, moving costs and the bills that arrive afterwards — brought together in one practical 21-page guide.
See what’s inside →This shows principal and interest only. It doesn't include property taxes, homeowners insurance, or mortgage insurance (PMI), which can add a meaningful amount to your real monthly outgoing.
We use a standard amortizing loan formula based on the rate, term, and loan amount you enter, compounded monthly — the same basic approach lenders use for a fixed-rate mortgage.
This calculator shows the standard schedule only. Try the mortgage overpayment calculator to see how extra payments change your payoff time and total interest.
No. Lenders factor in your credit profile, income, and current market pricing. This tool gives you a reasonable planning estimate, not a loan quote.
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Uses the standard amortising-loan payment formula from loan size, interest rate and term. It does not include all lender fees, insurance or local taxes unless separately entered.
Sources and further reading: MoneyHelper mortgages