Housing loan calculator
Estimate home loan repayments from the property price, down payment, interest rate and term. This mortgage calculator lets you compare scenarios before asking a lender for a quote.
How this calculation works
The property price less your deposit gives the loan principal. Bank valuations can differ from the purchase price. The calculation holds the annual reducing-balance rate constant, it does not predict repricing after a fixed-rate period. Enter title, appraisal, insurance and other upfront costs below. Insurance uses the total you enter for the term. Actual renewal amounts may differ.
Separate the property price from the loan
Start with the amount financed after your deposit. A longer housing term spreads repayment over more months, but increases interest when the rate stays the same. Allow separately for insurance, transaction charges and any future repricing in the offer.
Compare housing finance · How interest methods differ
Sources & assumptions
Formula-based scenario using your inputs. Example rates are not provider offers.
Sources reviewed 30 September 2026 · planning estimate
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