Motorists across the country will benefit from a further discount of 5.7 cents per litre, funded by revenue raised by the goods and services tax (GST) following an agreement between all states and territories.

Effective immediately, the states and territories have agreed to use additional GST revenue generated by higher petrol prices – estimated by National Cabinet at around $400 million – to fund the discount nationwide.

Prices peaked at a national average of $2.59 per litre over the past week, according to the Australian Institute of Petroleum, with diesel averaging $3.21 per litre.

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The news comes a day after the federal government’s halving of the fuel excise came into effect, reducing it from 52.6 cents per litre to 26.3 cents per litre from April 1 to June 30.

The additional GST-funded 5.7-cent reduction is also set to run until June 30.

Combined, the two measures deliver total savings of around 32 cents per litre, equating to $17.60 off a full 55-litre tank for Australia’s best-selling petrol vehicle in 2025, the Toyota RAV4.

For diesel vehicles such as the Ford Ranger – Australia’s best-selling model overall for the past three years – the changes amount to a saving of about $25.60 per tank.