The Reserve Bank is expected to hike interest rates again on Tuesday, after lifting rates in February, March and May.

It’s expected the central bank will raise the cash rate to 4.6%, from 4.35%.

For someone with an average-sized new mortgage of $731,000, paying a typical rate of 6.2%, an 0.25 percentage point rate increase would add about $119 to their $4,477 monthly repayments.

Their repayments would have risen nearly $480 in total since January if their bank had passed on in full each of the four rate rises this year.

Use this interest rate calculator to see what you might have to pay.