Mortgage calculator: Here’s how much extra your repayments will be

September 29, 2026 — 2:30pmFollow along to our live coverage of today’s interest rate rise here.The Reserve Bank of Australia has confirmed its fourth interest rate rise of 2026, increasing the cash rate target to 4.60 per cent.The increase of 25 basis points from the previous mark of 4.35 per cent takes interest rates to their highest level in 15 years.Use our mortgage calculator below to see the likely impact of the rate rise on your loan repayments. On a 25-year loan of $600,000 at 6.50 per cent, your mortgage would cost an extra $93 each month.You can change all the inputs to match your loan amount, term length and agreed interest rate below.Calculations are based on monthly fixed interest rate increases on the principal loan amount, excluding requisite monthly repayments, adjustments to repayment amounts, or additional repayment instalments.Commercial banks make their own decisions about how the RBA’s decision is applied to their mortgage rates.Cut through the noise of federal politics with news, views and expert analysis. Subscribers can sign up to our weekly Inside Politics newsletter.From our partners