Level-payment formula
Payment = P × r × (1 + r)ⁿ ÷ [(1 + r)ⁿ − 1]P is the principal, r is the nominal rate converted to the selected payment period and n is the total number of payments. At a zero rate, principal is divided by that payment count.
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Mortgage payment calculator
A quick and transparent monthly estimate
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Read the full explanation with the method, a checkable example, limits and common mistakes.
HOW IT WORKS
A result to understand, not just read.
Test how the amount borrowed, interest rate, term and payment frequency affect a fixed mortgage payment. Monthly, twice-monthly, biweekly, weekly, quarterly, semiannual and annual schedules are compared using the same inputs.
FREQUENTLY ASKED QUESTIONS
Does a longer mortgage always cost less each month?+
Usually yes, but the loan is outstanding for longer and total interest normally increases.
Are fees included in the payment?+
No. Valuation, arrangement fees, insurance, taxes and legal costs must be added separately unless your lender includes them in the financed amount.
RESULT GUIDE
How a fixed mortgage payment is calculated
The calculator applies a constant payment at the selected frequency. Early payments contain more interest; later payments repay a larger share of the original capital.
Example: €150,000 over 25 years
- principal: €150,000
- fixed nominal annual rate: 3.20%
- term: 300 months
This example excludes valuation, lender fees, insurance, taxes and legal costs.
How to interpret the result
- Test several terms: a longer term lowers the payment but usually raises total interest.
- Use the nominal rate for the payment formula and the APR or equivalent disclosure rate to compare the overall cost of offers.
What the estimate does not include
- It models a constant rate and does not forecast variable-rate changes.
- Your lender’s offer and amortisation schedule remain the authoritative figures.
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