Mortgage arrears are also likely to show further increases in the Northern Territory, with dwelling prices in decline and elevated vacancy rates.
The all-important inflation figures will be released on Wednesday morning.
Market consensus for core inflation is 0.5 per cent for the quarter and just 1.6 per cent annualised, well under the 2 to 3 per cent target range.
Headline inflation could come in a bit higher, with market consensus of 0.7 per cent (from a range of 0.3 to 1 per cent).
This will be the most important domestic release of the week.
In June the annual rate of inflation was the lowest seen since 1999 at just 1.3 per cent.