But loan balances of borrowers on lower incomes, and hence their loan payments, are also smaller on average – $ compared with $ One final caveat is that, even within the income quartiles, the average is skewed by some borrowers accumulating much larger balances than others.
Graph 6 Average Cumulative Extra Payments by Borrower Income Quartile* Variable-rate owner-occupier loans in Securitisation System $  4th (lowest)  3rd  2nd  1st (highest)  $  15,000  15,000  10,000  10,000 2020  5,000  5,000 2021  2022  0  -5,000  0  D J FMAM J J A SOND D J FMAM J J A SOND D J FMAM J J A SOND D J FMAM J J A SOND  -5,000  *  Borrowers' reported income at loan origination, grown by WPI.