$300,000 mortgage at 5% over 25 years — A$1,403/month
Monthly principal and interest repayments of A$1,403 over 25 years. Total interest paid: A$180,905. See how extra repayments can save you tens of thousands.
Extra monthly repayment
A$0/moWhat $300,000 mortgage at 5% over 25 years really costs
Your monthly repayment of A$1,403 covers both interest and principal. In the early years, the majority goes toward interest — in month 1, approximately A$1,000 is interest and only A$403 reduces the principal. This shifts gradually over 25 years.
Over the full 25-year term, you pay A$180,905 in interest — 75% of the loan amount. This is why extra repayments are so powerful: use the slider above to model the impact.
For a complete breakdown including stamp duty by Australian state, LMI estimates, and property tax, use the AU Mortgage Calculator. To understand how inflation affects your real repayment cost over time, see the Inflation Calculator.