Australian motorists are unlikely to get the benefits from any deal to end the Iran war because of the looming end of the fuel tax cut.
US President Donald Trump has been touting an imminent peace deal with Iran, although fighting in the Middle East has continued and officials in Tehran have been more circumspect.
Mr Trump's announcement that the agreement to end the war was "just about done" sent global oil prices plunging, but analysts said even if such a deal were reached, the impact on Australian petrol and diesel prices would be minimal.
While fuel prices spiked in the immediate aftermath of American and Israeli strikes on Iran, in most states and territories they are now lower than before the war, mainly because of a halving of the fuel excise.