Fuel excise indexation: the invisible tax increase nobody voted for
By Direct Democracy
Every time you fill up your car, you're paying a tax that quietly grows larger without any politician ever having to cast a vote, hold a debate, or face scrutiny. It's called fuel excise indexation, and it's one of the most effective invisible tax increases in the Australian policy toolkit.
What is fuel excise, and what is indexation?
Fuel excise is a flat tax applied to every litre of petrol and diesel sold in Australia. As of mid-2025, the rate sits at approximately 50.8 cents per litre - meaning that on a 50-litre tank, you're paying around $25.40 in federal excise before you even factor in GST (which is then charged on top of the excise, a tax-on-a-tax arrangement that receives remarkably little public attention).
Indexation means this rate is automatically adjusted every six months - in February and August - in line with the Consumer Price Index (CPI). There's no vote in Parliament. No budget measure. No press release. The tax simply goes up, twice a year, by default.
This mechanism was abolished by the Howard Government in 2001 under pressure from rural and trucking lobbies, then quietly reintroduced by the Abbott Government in the 2014 budget - somewhat ironically, given that same government had campaigned heavily on reducing the cost of living. It has continued under every government since, including Labor under Albanese.
Why it matters: the numbers
The cumulative effect is significant. Since indexation was reintroduced in 2014, fuel excise has risen by roughly 12–15 cents per litre purely through CPI adjustments - not through any deliberate policy decision, just the automatic ratchet of indexation.
For a typical Australian household with two cars driving around 15,000 km each per year at average fuel efficiency, that indexation creep adds up to an extra $150–$250 per year compared to what they'd pay if rates had stayed frozen. That's not a fortune, but it's money taken without a single elected representative being asked to justify it.
For tradies, farmers, and small business owners who rely on diesel for work vehicles or machinery, the impact is substantially larger. A small trucking operator running two diesel vehicles can expect to pay thousands more annually due to cumulative indexation - costs that are either absorbed into razor-thin margins or passed on to consumers.
Who bears the burden?
Fuel excise is widely recognised by economists as a regressive tax - meaning it takes a larger share of income from lower-income households than from wealthy ones. Consider:
- Low-income workers in outer suburban and regional areas often have no viable public transport alternative
- They typically drive older, less fuel-efficient vehicles
- They spend a higher proportion of their income on transport costs
- They have less capacity to absorb rising costs through discretionary spending adjustments
By contrast, higher-income earners in inner-city areas are more likely to have access to public transport, can more easily afford EVs or hybrids, and the cost represents a smaller share of their overall budget.
| Household type | Estimated annual fuel excise paid | As % of income |
|---|---|---|
| Low income, outer suburban | $1,800–$2,400 | 3–5% |
| Middle income, suburban | $1,200–$1,800 | 1.5–2.5% |
| High income, inner city | $600–$1,200 | 0.3–0.8% |
Estimates based on ABS household expenditure data and standard excise rates.
Why does this policy exist - and why does it persist?
The official justification is that fuel excise helps fund road infrastructure and that indexing it to CPI maintains the 'real value' of that funding over time. Treasury and the Productivity Commission have generally supported it on efficiency grounds.
There's some logic to this. Roads cost money to build and maintain. Fuel excise is a rough proxy for road use. Letting the real value of that revenue erode through inflation would mean either cutting road budgets or finding the money elsewhere.
But the more honest answer to why it persists is political convenience. Indexation is the perfect political mechanism: revenue increases automatically, no politician has to own the decision, and most voters don't even know it's happening. It generates billions for the federal budget - fuel excise raises roughly $12–13 billion per year - with essentially zero political cost.
Both Labor and the Coalition have had ample opportunity to remove indexation, modify it, or at least make it subject to annual parliamentary approval. Neither has. The temporary 6-month cut to excise in 2022 (22 cents per litre, introduced by Morrison and allowed to expire by Albanese) demonstrated that the mechanism can be interrupted when political pressure is sufficient - but also that both parties defaulted to reinstating it the moment attention moved elsewhere.
What would voters choose?
This is where the democratic deficit becomes impossible to ignore. No Australian has ever been asked to vote on fuel excise indexation. It wasn't a major election platform in 2014 when it was reintroduced. It hasn't been put to a referendum. It persists because of institutional inertia and because its invisibility insulates it from accountability.
Polling consistently shows Australians want lower fuel costs. The 2022 excise cut was popular across all demographics. Regional communities have loudly and repeatedly called for relief. Trucking associations, farmers, and cost-of-living advocates have all pushed back.
Yet the policy continues - because in our representative system, what matters is whether politicians choose to act, not whether citizens want change.
The direct democracy difference
At Direct Democracy, we believe that a policy like fuel excise indexation - an automatic, recurring tax increase that affects every household - should require explicit, ongoing democratic approval. Not a one-time vote in Parliament years ago, but real accountability: members voting on whether this mechanism should continue, be modified, or be replaced with something fairer.
If our members had a direct say, we'd put this to a vote. And based on everything we know about how Australians feel about fuel costs, cost of living, and tax fairness, we have a pretty good idea what the result would be.
That's the point. Democracy shouldn't only happen every three years - it should happen on the policies that affect your daily life.
---
Want a say in policies like this one? Take our [policy quiz](https://directdemocracy.com.au/quiz) to see where you stand on the issues that matter, or [join Direct Democracy](https://directdemocracy.com.au/join) to become a member and vote directly on the policies our representatives take to Parliament.