Fuel Tax
What is it?
Fuel tax is a stack of government charges added to every litre of petrol or diesel sold in New Zealand — before the retailer adds their margin, and before GST goes on top of everything.
Most people assume the price at the pump reflects the cost of oil plus a bit of profit for the petrol station. The reality is more complicated. A significant portion of what you pay every time you fill up goes directly to the government — funding roads, accident compensation, and climate policy.
Understanding fuel tax explains why NZ pump prices feel so brutal when the oil price spikes — and why cutting it isn't as simple as it sounds.
What's in the stack?
Every litre of 91 octane petrol in New Zealand includes the following charges:
Fuel Excise Duty (FED) — around 77 cents per litre The biggest single component. A flat government charge per litre, set under the Customs and Excise Act. Every cent goes into the National Land Transport Fund — used to build and maintain roads, fund road safety programmes, and subsidize public transport. Diesel vehicles don't pay FED — instead they pay Road User Charges (RUC) separately, based on distance travelled and vehicle weight.
ACC levy — around 6 cents per litre Collected by the Accident Compensation Corporation. Funds the treatment and rehabilitation of people injured in motor vehicle accidents. Every driver contributes through the pump.
ETS levy — around 14–18 cents per litre New Zealand's Emissions Trading Scheme requires fuel companies to pay for the carbon emissions produced when their fuel is burned. That cost gets passed directly to consumers. The exact amount changes as the price of carbon units fluctuates — currently adding around 14 to 18 cents per litre. As carbon prices rise over time, this levy will grow.
Local authority fuel tax — around 0.66 cents per litre A small levy collected nationally, distributed to local councils to maintain local roads not covered by the National Land Transport Fund.
MBIE levy — around 0.59 cents per litre Collected by the Ministry of Business, Innovation and Employment to fund their fuel monitoring program — the regime that ensures fuel quality and market transparency.
Auckland regional fuel tax — abolished June 2024 Between 2018 and 2024, Auckland had an additional regional fuel tax of 10–11.5 cents per litre to fund local transport projects. The coalition government scrapped it on 30 June 2024 as part of its 100-day plan. Aucklanders and the rest of NZ now pay the same base levies at the pump — though the debate about how to fund Auckland's transport infrastructure without it continues.
GST — 15% on everything above Goods and Services Tax is added on top of the entire price — including all the levies above. This means GST is charged on top of other taxes. When the base price rises, the GST take rises too — even though the rate hasn't changed.
How much tax is in a litre?
On a typical litre of 91 octane petrol at $3.80 to $4.00 during the current crisis, roughly $1.10 to $1.20 goes to the government in levies and taxes before GST. Add GST and the total government take is around $1.40 to $1.55 per litre — roughly 37 to 40% of the pump price.
That means for every $100 you spend on petrol, around $37 to $40 goes to the government. The rest covers the cost of the fuel itself, shipping, storage, and the retailer's margin.
Where does the money go?
The biggest chunk — the Fuel Excise Duty — goes entirely into the National Land Transport Fund, which Waka Kotahi (the NZ Transport Agency) administers. It funds state highway construction and maintenance, local road subsidies, road safety programmes, and public transport subsidies including bus and rail.
This is an important point: fuel tax is essentially a user-pays system for roads. The more you drive, the more fuel you use, the more you contribute to road funding. Diesel vehicles pay the equivalent through Road User Charges.
The ACC levy funds accident compensation — specifically motor vehicle accidents.
The ETS levy funds NZ's climate commitments — the money flows into the government's emissions management system.
Why does tax make price spikes hurt more?
When the global oil price rises by 30 cents a litre, the pump price doesn't just rise by 30 cents. It rises by more — because GST is calculated on the total price including all the fixed levies.
Here's a simplified example:
- Base fuel cost rises by 30 cents
- Fixed levies stay the same — but they're still sitting on top
- GST of 15% is applied to the new higher total
- The pump price rises by more than 30 cents
This amplification effect means NZ consumers feel oil price movements more acutely than countries with lower or simpler tax structures.
What about diesel?
Diesel is taxed differently. It doesn't pay Fuel Excise Duty — instead, diesel vehicles pay Road User Charges based on kilometers travelled and vehicle weight. This system was designed because heavy trucks cause significantly more road damage than cars, and RUC allows charges to be scaled accordingly.
However, diesel does pay the ETS levy, the ACC levy, and GST. In 2026, with diesel prices spiking nearly 90 cents in a month, the tax component — while proportionally similar — sits on top of a dramatically higher base price.
What the government decided in 2026
The government has been resistant to cutting fuel excise duty during the crisis, concerned that lowering prices would subsidize demand — exactly the wrong signal when supply is already under pressure. Transport Minister Chris Bishop was blunt: raising fuel tax during a fuel crisis didn't seem like a starter either.
So, the government is considering pausing a planned fuel tax increase — a 12 cents per litre rise that had been scheduled for January 2027 — while the crisis plays out.
Instead, targeted household support has been signaled to help working families cope with the higher costs.
The bigger picture — replacing fuel tax altogether
The government has a longer-term plan that makes this all more interesting: replacing fuel excise duty entirely with electronic Road User Charges for all vehicles. Currently only diesel and electric vehicles pay RUC. The plan would extend it to all petrol vehicles too — meaning you'd pay for roads based on how far you drive, not how much fuel you use. The government is engaging with the market in 2026 on technology and timelines, with the RUC system intended to be open for new providers by 2027. No date has been set for the full transition — but it's a once-in-a-generation shift in how NZ funds its roads.
Q&A — Common questions and misconceptions
"Just cut the fuel tax — it's the easiest fix." It would reduce prices at the pump immediately — but fuel excise duty funds roads, and the ACC levy funds accident compensation. Cut them and either those programmes get cut too, or the government borrows to replace the lost revenue. It's not free money. The government also argued in 2026 that cutting prices during a supply shortage would encourage more consumption — not what you want when supply is already tight.
"The government is profiting from high fuel prices through GST." In a narrow sense, yes — when prices rise, the 15% GST take rises too, even though the rate hasn't changed. The government collects more GST on a $4 litre than a $2.50 litre. Whether that constitutes "profiting" is a matter of perspective — the extra GST revenue can offset some of the cost of supporting households through the crisis.
"Diesel is cheaper because it has less tax." Diesel doesn't pay Fuel Excise Duty — but diesel vehicles pay Road User Charges instead. The overall tax contribution is designed to be broadly equivalent. In 2026, diesel prices spiked higher than petrol in some regions — not because of tax, but because of supply pressures in the refined diesel market.
"What happened to Auckland's regional fuel tax?" It was scrapped on 30 June 2024 by the coalition government as part of its 100-day plan. The tax had been adding 10–11.5 cents per litre since 2018, funding Auckland transport projects. Removing it saved Aucklanders around $5.75 to $9.20 per fill-up — but left a significant gap in Auckland's transport funding that hasn't been fully resolved.
"Other countries don't tax fuel this heavily." Actually, many do — and some considerably more. The UK, Germany, France and most of Europe tax fuel at rates higher than NZ. Australia taxes fuel at a lower rate, which is part of why Australian pump prices are sometimes lower than NZ's. The US has very low fuel tax by international standards, which is why American pump prices often look cheap to New Zealanders.
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