TL;DR: Headline inflation rose to 4% in August from 3.5% in July; trimmed mean stayed at 3.6%. Labor is eyeing spending cuts with savings likely in December. Chalmers blames global oil; Deloitte's Stephen Smith says domestic non-tradables at 4.5% vindicate the RBA. NSW Premier Chris Minns declined to back Canberra's fiscal line.
Status note: Checked 1 October 2026 against Sydney Morning Herald reporting by Paul Sakkal. Mid-year budget timing and internal Labor splits can still shift before December.
What the August CPI added after the rate hike
The Australian Bureau of Statistics data showed headline inflation at 4% in the year to August, up from 3.5% in July. The trimmed mean measure the Reserve Bank emphasises, often called underlying inflation, remained stuck at 3.6% for a third month. The RBA's midpoint target is 2.5%.
That print landed after Tuesday's unanimous quarter-point increase took the cash rate to 4.60%, a 15-year high and the fourth hike this year. Bullock had already said domestic capacity pressures were primary, with Middle East oil as an additional shock. The CPI gave both sides new numbers to cite in Canberra.
Monthly readings for August were slightly softer than the annual figures in some analyst notes, a detail Chalmers allies may use to argue the spike is peaking. Bullock's board still sees trimmed mean inflation stuck far above target, which keeps another move on the table in market pricing.
Labor's spending-cut signal
Senior Labor figures are looking at spending cuts to demonstrate frugality and to answer internal unease about voter blowback on living costs, according to SMH reporting. Savings are likely to be packaged in the December mid-year budget update rather than announced immediately.
Not everyone in the caucus is convinced deep cuts are the answer. Some MPs worry that austerity optics collide with cost-of-living politics and with One Nation gaining traction on economic frustration. The government is trying to thread a needle: look responsible to the RBA and markets without abandoning household relief narratives.
Former RBA governor Philip Lowe said on a podcast circulated by the Institute of Public Affairs that Labor should be running surpluses while revenues are strong and unemployment has been low. Respected former officials Martin Parkinson and Ken Henry have made similar arguments in the same debate.
Chalmers, oil, and the gaslighting row
Chalmers told reporters the overwhelming reason headline inflation rose in August was higher global oil prices. He pushed back on economist Richard Holden's claim that he was gaslighting voters by stressing external shocks.
That exchange sits on top of AMU's earlier piece on Chalmers blaming an oil war while Bullock insisted excess demand predated the Middle East shock. The treasurer's Wednesday message was that the monthly fuel spike explains the headline jump even when underlying inflation barely moved.
Deloitte access economics chief Stephen Smith offered a counterweight friendly to Bullock's frame. Non-tradables inflation at 4.5%, he said, shows domestic prices driving most of the problem and vindicates the Bank's focus on demand at home.
Internal Labor figures were already frustrated after Bullock's Tuesday press conference, which was blunter than the written statement and challenged the treasurer's external-shock story. Wednesday's CPI did not settle that fight. It gave each camp a number to put on a slide.
Minns, Albanese, and the politics of restraint
NSW Premier Chris Minns declined to support Canberra's fiscal approach when asked. He said every level of government should take demand out of the economy, a line that leaves federal Labor without uniform cover from its largest state.
Prime Minister Anthony Albanese, meanwhile, tested the Coalition on a proposed private health insurance rebate cut affecting older Australians, a measure Labor framed as worth about $3 billion. Albanese claimed Labor had banked $178 billion of unexpected revenue, a figure meant to show fiscal discipline even as spending debates intensify.
Industry Minister Ed Husic said the RBA's latest call was unfair to households already under pressure. Emma Dawson of the Chifley Research Centre argued the Bank was whacking people who could least absorb another rate rise. Those voices show internal Labor discomfort with Bullock's bluntness, not a revolt against the government's right to set spending.
Opposition Leader Angus Taylor continues to argue that federal spending at stimulus levels forced the Bank's hand. Labor replies that four-fifths of last year's demand growth came from the private sector and that NDIS repair and productivity packages show discipline. Voters will hear both scripts through the spring parliamentary sitting.
Where things stand
As of 1 October 2026, inflation at 4% headline and 3.6% trimmed mean keeps the RBA's tightening story alive. Labor is preparing to show spending restraint in December while Chalmers keeps pointing at oil and Smith keeps pointing at domestic prices. Minns will not cheer Canberra's plan from Sydney.
Spending cuts in a mid-year update are a signal, not yet a line-by-line budget. The hike to 4.60% is already in borrowers' statements. The political fight is whether voters believe inflation is imported, homemade, or both, and whether Labor can sell frugality without handing One Nation a monopoly on anger.
Sources: Sydney Morning Herald (Paul Sakkal) on Labor spending cuts and inflation politics; ABC News on the RBA hike and Chalmers-Bullock blame split (prior AMU beat).