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Mortgage repayment calculator
Estimate your monthly, fortnightly or weekly repayment, plus the total interest you'll pay over the life of the loan.
The amount you want to borrow.
Pre-filled with today's lowest variable: 5.59%.
Most owner-occupier loans run 25–30 years.
Your monthly repayment: $3,727
monthly repayment
$3,727
Equivalent monthly
$3,727
Total paid over term
$1,341,870
30 years at 5.59% (P&I)
Total interest
$691,870
The cost of borrowing over the full term.
How this is calculated
For Principal & Interest the standard amortising formula is used: M = P · r · (1+r)^n / ((1+r)^n − 1). For Interest-only, you only pay interest each period and the principal stays at the loan amount until you switch back to P&I or repay it as a lump sum.
Fortnightly and weekly figures are the monthly amount × 12 ÷ 26 (or 52). Splitting payments across more frequent periods can shave years off the loan term — many lenders credit the extra annualised payment against principal sooner.
Want a real number, not a ballpark?
These figures are estimates. A 30-min broker consult will run your specific scenario against the actual lender policies — no fees, no obligation.
Important: This calculator provides an estimate only and does not constitute credit advice. Actual rates, repayments, fees and approval are subject to lender policy and your individual circumstances. Comparison rates are based on a $150,000 loan over 25 years on a secured basis — see footer for the full disclaimer.