The 3.095 Cent Tax That Explains Where Fuel Excise Is Heading

If you filled up this week and winced, you paid 53.7 cents a litre in fuel excise before the servo took a single cent of profit. That tax has just picked up an expiry date, and the number that proves it is 3.095.

That figure is the road user charge New South Wales has set for battery electric vehicles in the 2026 and 2027 financial year: 3.095 cents for every kilometre driven, starting 1 July 2027 or whenever electric vehicles hit 30 per cent of new car sales, whichever lands first. Plug in hybrids cop 80 per cent of the full rate. Western Australia has announced its own distance based charge on zero and low emissions light vehicles from the same July 2027 date. Two states, one direction of travel, and a federal government that still has not decided whether it is leading or following.

Here is why this matters to you even if you have never so much as sat in a Tesla.

The tax that forgot what it was for

Fuel excise arrived in 1929 as a road funding measure. Pay for petrol, pay for the bitumen. That link was formally cut decades ago and excise now flows into consolidated revenue like any other tax, but the rough logic survived: drive more, burn more, pay more. It was a distance charge wearing a fuel costume.

The costume no longer fits. Excise raises roughly $15 billion a year, and the average petrol or diesel driver hands over about $1,400 of it annually. Every electric vehicle that joins the fleet, and every efficient hybrid too, quietly shrinks that pool while using exactly the same roads. Treasury has watched this coming for years. What it did not have was a legal way to fix it.

The court case most motorists never heard of

In October 2023 the High Court handed down Vanderstock v Victoria, and it changed everything about how this fight would be run. Victoria had introduced a distance based charge on electric vehicles. The court found the charge was, in constitutional terms, an excise, and only the Commonwealth can levy one of those. The Victorian scheme was struck out.

That decision left the states holding an obvious revenue problem with no obvious tool. NSW went ahead anyway, structuring its charge to try to survive the same test. Whether it does is a question for lawyers with better hourly rates than mine, but the political read is simpler: the states got tired of waiting for Canberra.

Federal Treasurer Jim Chalmers told reporters last August that around the table, "people had a view that this is an idea whose time has come". A national scheme has been sketched out repeatedly. The Parliamentary Budget Office costed one at roughly 5.3 cents per kilometre for 2026 and 2027, pegged at 100 per cent of what an average petrol car pays in excise per kilometre, with distances reported monthly to the ATO. Transport Minister Catherine King has been publicly cool on the timing, pointing at the Senate numbers. Then the Middle East conflict hit, petrol went vertical, the excise was cut and then restored, and the whole reform slid down the priority list.

So we have arrived somewhere genuinely odd. The Commonwealth holds the constitutional power and has not used it. The states lack the power and are using it anyway.

Look across the Tasman if you want the real preview

New Zealand is not debating this. It is doing it.

Kiwi diesel, electric and heavy vehicles have paid road user charges for years, based on distance and vehicle weight. The government there has agreed to legislative changes to move the remaining 3.5 million light vehicles, the petrol ones, off fuel excise duty and onto electronic road user charges. Officials have described it as the biggest change to road funding in fifty years. The system is meant to be open to third party providers from 2027, though Wellington has been careful not to lock in a date for the full switch.

Read that again, because it is the part Australian coverage keeps skipping. New Zealand is not building a special tax for electric cars. It is retiring petrol tax entirely and charging everyone by the kilometre. Motorists in Auckland currently pay something like 70 cents a litre in fuel excise duty, and officials have said openly that pump prices should fall when that comes off.

Every serious analysis of the Australian version reaches the same conclusion eventually. A charge that only applies to electric vehicles is a transition measure, not a destination. You cannot run a road funding system on a shrinking tax forever, and you cannot indefinitely charge one fleet by the litre and another by the kilometre without someone noticing the arithmetic.

What it actually means at the bowser

Nothing changes on your next fill. Excise sits at 53.7 cents a litre, indexed to CPI twice a year, and you pay GST on top of it, which is the detail that annoys people most once they spot it. The 32 cent cut of April 2026 unwound in two steps and finished on 3 August. That story is over.

Three things are worth watching.

First, the indexation. Excise creeps upward every February and August without a single vote in Parliament. The August adjustment added 1.1 cents. It is small, it is relentless, and it is the reason the headline rate keeps climbing regardless of who is in government. Tracking unleaded petrol prices across the excise changes this year shows just how quickly wholesale movements reach the pump, usually inside a fortnight.

Second, the comparison you will be handed. At 3.095 cents per kilometre, a NSW electric vehicle driver covering 13,000 kilometres a year pays about $402. A petrol car doing the same distance at 8 litres per 100 kilometres pays roughly $558 in excise. Expect that gap to become the entire political argument, from both directions.

Third, and this is the one nobody is campaigning on: if a per kilometre charge is eventually extended to petrol and diesel vehicles the way New Zealand is doing it, the price on the board at your local servo stops including a road tax. Bowser prices would fall. Your annual driving bill probably would not. The money simply moves from a place you barely notice to a bill you definitely will.

For Sydney and Perth drivers, whose states are moving first, that shift is now on a published timetable rather than a discussion paper.

The practical upshot

The fuel excise has quietly funded Australian roads for close to a century. Watching the argument over what replaces it is worth your attention now, because the version that wins will be charging you for a very long time.