It estimates your regular home loan repayments based on the loan amount, interest rate, loan term, and how often you make repayments. It gives you a quick sense of what a loan might cost you each week, fortnight, or month — handy for budgeting or comparing scenarios before you commit.

They’re a close estimate, not a quote. The calculator uses the figures you enter and assumes a constant interest rate over the term. Your actual repayments can differ because of rate changes, fees, the exact day-count method your lender uses, and the specific product features on your loan. Use it as a guide and confirm the real numbers with your lender or broker.

With principal and interest (P&I), each repayment covers the interest charged plus a portion of the amount you borrowed, so your loan balance steadily reduces and is paid off by the end of the term. With interest-only, you pay just the interest for a set period, so repayments are lower but the balance doesn’t reduce — and repayments jump once the interest-only period ends. Interest-only is more common with investment loans.

A longer term (say 30 years) lowers your regular repayment because the balance is spread over more time — but you pay more interest overall. A shorter term raises each repayment but reduces the total interest you pay. The calculator lets you test different terms so you can see this trade-off.

It can. Switching from monthly to fortnightly repayments often means you effectively make the equivalent of one extra monthly repayment each year, which can shave time and interest off your loan. Weekly and fortnightly schedules also align better with most pay cycles. The calculator lets you compare frequencies side by side.

On a variable rate loan, repayments move with the rate — a rise increases them, a cut reduces them (though some lenders keep your repayment the same and let you pay the loan off faster). On a fixed rate loan, repayments stay the same for the fixed period, then revert to a variable rate afterward. It’s worth running the calculator at a rate a percentage point or two higher than today’s to see how comfortable you’d be if rates moved.

Paying more than the minimum reduces your loan balance faster, which means less interest charged and a shorter loan. Even small, regular extra payments can save a surprising amount over the life of a loan. If your calculator has an extra-repayments field, you can see the impact on both your interest cost and your payoff date.

An offset account is a transaction account linked to your loan. The balance in it is “offset” against your loan balance, so you’re only charged interest on the difference. It doesn’t lower your minimum repayment, but more of each repayment goes toward the principal, helping you pay the loan off sooner. Redraw works similarly but lets you pull back extra repayments you’ve already made.

Usually not, unless stated. Things like application fees, ongoing account fees, and Lenders Mortgage Insurance aren’t typically built into a basic repayments estimate. To compare loans fairly, look at the comparison rate, which blends the interest rate with most standard fees into a single figure.

Common reasons include a different interest rate to the one you entered, fees added to the loan, a different day-count or rounding method, an interest-only period, or features like a package discount. The calculator is a planning tool; your lender’s figure reflects your actual product and circumstances.

Yes — run each loan’s amount, rate, and term separately and compare the results. Just remember to look beyond the headline repayment: the comparison rate, fees, features (offset, redraw, extra repayments), and flexibility all matter when choosing between loans.

Use it as a budgeting benchmark and a starting point for a conversation. The next step is matching that comfort level to the right loan and lender for your situation, which is where a tailored assessment turns the estimate into a real plan.