Motorists and transport businesses are being warned to expect an end to a cut to the fuel tax as conflict flares up between Iran and the US.
The fuel excise was temporarily halved by the Albanese government, slashing 26 cents off a litre, in response to soaring global oil prices caused by the war in the Middle East.
The $2.5 billion measure is planned to run out at the end of June, as Transport Minister Catherine King indicated it would not be extended further.
"We're consulting, obviously, with industry about the impact of that, but people should at this stage expect that it's coming off at the end of June," she told ABC News Breakfast on Wednesday.
"We are doing everything we can to shield Australians from this conflict in the Middle East."