Estimate your principal-and-interest or interest-only home loan repayments, the total interest over the term, and what extra repayments could save.
What this calculator estimates
The Mortgage Calculator turns a loan amount, an interest rate and a term into the number most people actually want: the repayment they would meet each week, fortnight or month. It also shows the total interest paid over the life of the loan, the total cost, and — if you add a voluntary amount — how much extra repayments could shave off both the interest bill and the time to pay the loan out. Switch between principal-and-interest and interest-only to see how the structure changes the figure.
What actually drives the number
Four levers move a repayment: the size of the loan, the rate, the term, and whether you are paying down principal or just servicing interest. A longer term lowers the repayment but lifts total interest; an interest-only period lowers it further, but the balance does not reduce until the loan reverts. The rate you key in is a sticker rate — lenders quote a comparison rate that folds in fees, and two loans with the same headline rate can cost quite differently once an offset account, redraw, or a split is in play. That is policy, not verdict: the question is which lender's loan structure fits how you actually manage money.
Use it as a starting point
Treat the result as a reference point for the conversation, not a quote. The same borrower can be better off on a higher-rate loan that suits their structure than on the cheapest sticker rate. Book a strategy session and we will model your real numbers and the structure around them.
General information only — not personal financial product or credit advice. The estimate is indicative and depends on each lender's policy, current rates and your full circumstances. AeFin is an Australian Credit Representative (CR 464548) of Finsure (ACL 384704).