How Fuel Excise Taxes Work—and Why They Get Suspended
Fuel excise taxes fund roads and transit worldwide, but governments routinely suspend them when prices spike. Here's how they work, who pays, and why economists remain skeptical of tax holidays.
A Tax Built Into Every Litre
Every time a driver fills up at the pump, a significant chunk of the price goes not to the oil company but to the government. Fuel excise taxes—levied per unit of fuel rather than as a percentage of the price—are among the oldest and most widespread consumption taxes in the world. They fund roads, bridges, and public transit, and they quietly shape how much people drive.
Unlike sales taxes added at checkout, fuel excise taxes are typically baked into the sticker price. Most consumers never see them broken out on a receipt. Yet these hidden levies generate enormous revenue: in the United States alone, federal and state fuel taxes funnel roughly $90 billion a year into transportation infrastructure.
How the Money Flows
Fuel excise taxes operate on what economists call the users-pay, users-benefit principle. Drivers who wear down roads pay for their upkeep through the fuel they burn. In the U.S., the federal gas tax—18.4 cents per gallon for gasoline, 24.4 cents for diesel—feeds the Highway Trust Fund, which channels about 85% of receipts into highway construction and maintenance. The remainder supports mass transit.
State-level taxes add another 30-plus cents per gallon on average, with wide variation. California tops the chart; Alaska charges the least. Some states earmark every cent for roads; others divert portions to general budgets, education, or environmental programs.
A Global Gap in Rates
The United States taxes fuel far less than most industrialised nations. According to Tax Foundation data, the European Union requires a minimum excise duty of €0.359 per litre on unleaded petrol—already higher than the most expensive combined federal-and-state rate in America. The average EU excise duty on petrol is roughly €0.57 per litre, more than three times the U.S. federal rate.
On top of that, European drivers pay value-added tax (VAT) on the total price including the excise duty—a tax on a tax. The result: in countries like the Netherlands or Italy, taxes can account for more than half the pump price.
Why Governments Suspend Them
When fuel prices spike—typically triggered by geopolitical crises—governments face intense public pressure to act fast. Suspending the excise tax is the quickest lever available because it requires no negotiation with oil producers or retailers. In 2022, amid price surges following Russia's invasion of Ukraine, at least six U.S. states declared gas tax holidays. Germany, Australia, and Peru cut or suspended their fuel levies too.
Canada's recent decision to suspend its federal fuel excise tax—10 cents per litre on gasoline—from April to September 2026 follows the same playbook, prompted by volatile global energy prices. The Canadian government estimates the move will deliver about C$2.4 billion in consumer relief.
Do Tax Holidays Actually Work?
Economists are deeply skeptical. A Tax Foundation analysis notes that savings are not always passed through to consumers—oil companies and retailers may absorb part of the cut. Empirical research published in Energy Economics estimated pass-through rates at roughly 79%, meaning drivers capture less than the full tax reduction.
Critics raise additional concerns:
- Poor targeting: High-income households, who drive more, receive larger benefits than low-income families.
- Demand spikes: Lower prices can temporarily increase consumption, partially offsetting the price relief.
- Infrastructure damage: Lost revenue starves road maintenance budgets—the very infrastructure drivers depend on.
In 2022, more than 150 economists—including three Nobel laureates—signed a letter opposing the U.S. federal gas tax holiday proposal, calling the benefits small and the trade-offs significant.
The Bigger Picture
Fuel excise taxes sit at the intersection of transportation policy, fiscal strategy, and climate goals. Higher taxes discourage driving and incentivise fuel-efficient vehicles; suspending them sends the opposite signal. As electric vehicles erode the traditional tax base, many governments are already experimenting with mileage-based fees to replace per-gallon levies.
Tax holidays offer visible, immediate relief—which is exactly why politicians reach for them. Whether that relief is worth the fiscal and environmental cost remains one of the most contested questions in energy policy.
