Poilievre Says Canadians Pay 32¢ More for Diesel Than Americans as Carney Points to Provincial Taxes

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Canada’s latest affordability fight has moved from grocery aisles and mortgages to the diesel pump. Conservative Leader Pierre Poilievre told the House of Commons that Canadians were paying 32 cents more per litre for diesel than Americans, arguing that the gap is difficult to justify in a country with some of the world’s largest oil reserves. Prime Minister Mark Carney pushed back by pointing to provincial fuel taxes and international forces affecting energy markets.

The exchange highlights a problem that is considerably more complicated than a single tax or a single global price. Canadian diesel costs reflect crude prices, refinery conditions, currency movements, federal regulations, sales taxes and sharply different provincial levies. And with diesel prices unusually high on both sides of the border, even small differences can quickly become politically significant.

Diesel Prices Take Centre Stage in Question Period

Poilievre put diesel at the centre of Question Period on September 24, describing the situation as a “full-scale diesel price crisis” and pressing the government for additional relief. In one exchange, he said Canadians were paying 41 cents more per litre than the world and 32 cents more than Americans, despite Canada possessing the world’s fourth-largest oil reserves. Natural Resources Canada independently confirms the broader resource point: Canada is the world’s fourth-largest crude-oil producer and holds the fourth-largest proven oil reserves, estimated at roughly 163 billion barrels.

Carney’s answer focused on another part of the pump-price equation. He reminded MPs that provinces levy their own taxes on diesel and argued that those charges contribute to differences between Canadian and American prices. Reporting on the exchange also shows Carney pointing to international conflicts, the federal excise-tax suspension and efforts to increase refining supply. That left the two leaders emphasizing different pieces of the same price structure: Poilievre focused heavily on government-imposed costs, while Carney emphasized provincial taxation, global disruption and supply.

The Canada-U.S. Price Gap Is Large, but the Exact Number Moves

The latest publicly available national price series confirms that Canadian diesel has become exceptionally expensive. A Canadian national index based on Natural Resources Canada’s weekly survey put diesel at approximately 271 cents per litre for the September 22 reporting period. In the United States, the Energy Information Administration reported an average on-highway diesel price of US$6.529 per gallon for the week of September 21. AAA’s daily national diesel average on September 24 was similarly high at about US$6.51 per gallon.

Converting the EIA figure into Canadian dollars illustrates why comparisons can change from day to day. The Bank of Canada put one U.S. dollar at C$1.4136 on September 24. At that exchange rate, US$6.529 per U.S. gallon works out to roughly C$2.44 per litre — about 27 cents below the Canadian weekly figure rather than exactly 32 cents. Different survey dates, exchange rates, regional weighting and daily pump-price sources can move that gap by several cents. The public national series reviewed here therefore supports Poilievre’s broader point that Canada was more expensive, but it does not reproduce the precise 32-cent figure using the closest comparable observations.

Carney Is Correct That Provincial Diesel Taxes Vary Sharply

Provincial taxes create surprisingly large differences before a truck even leaves the pump. Natural Resources Canada’s fuel-levy table, updated in September 2026, lists Ontario’s provincial diesel tax at nine cents per litre. Saskatchewan’s is 15 cents, Quebec’s is 20.2 cents and the Vancouver area carries 27.5 cents per litre in provincial and regional diesel taxation. Yukon is considerably lower at 7.2 cents. Some Atlantic provinces also have additional clean-fuel adjusters, adding another layer to the final price.

Ontario provides a particularly clear example of how provincial decisions matter. Its government permanently reduced the provincial fuel tax to nine cents per litre beginning July 1, 2025, after several years of temporary reductions. The differences mean that there is no single Canadian tax burden on diesel that applies uniformly from Vancouver to Halifax. A truck filling a large tank can therefore face materially different tax costs simply by crossing provincial boundaries. Carney’s provincial-tax argument identifies a genuine component of the Canadian price structure, although provincial levies are only one of several costs embedded in what consumers ultimately see on the sign outside a fuel station.

Ottawa Has Already Suspended One Federal Diesel Tax

The federal government’s standard excise tax on diesel is four cents per litre, but drivers are not currently paying it. Ottawa originally suspended the levy from April 20 through Labour Day 2026 as fuel prices climbed. On September 15, the government extended the full suspension through January 31, 2027. Half of the normal rate — two cents per litre for diesel — is scheduled to return during February and March, followed by the full four-cent rate on April 1, 2027.

That extension matters when assessing calls for Ottawa to immediately eliminate diesel taxes, because one prominent federal levy is already temporarily at zero. The government estimates the extended fuel-excise relief will add approximately $2.9 billion to the measure’s fiscal cost, bringing estimated 2026-27 tax relief to about $5.3 billion. Ottawa also eliminated the federal consumer carbon price in April 2025. However, GST or HST can still apply, while federal Clean Fuel Regulations continue to impose carbon-intensity requirements on gasoline and diesel suppliers. In other words, the federal component of the pump price has been reduced substantially, but it has not disappeared altogether.

The Clean Fuel Rules Are Another Part of the Political Dispute

Poilievre has repeatedly described the Clean Fuel Regulations as a fuel or carbon “tax” and has called for their removal as part of his fuel-cost proposals. Formally, however, the policy operates as a regulation rather than a conventional per-litre tax collected by the federal government. Fuel producers and importers are required to reduce the lifecycle carbon intensity of gasoline and diesel, with a credit market allowing regulated companies to generate or purchase compliance credits. Those requirements become progressively more stringent over time.

That does not mean compliance is cost-free. Federal briefing material has estimated that, once the rules reach greater stringency in 2030, their diesel price effect could be roughly seven to 16 cents per litre in 2021 dollars, depending on compliance costs and assumptions. Those are projections for 2030, not estimates of the amount consumers are necessarily paying today. This distinction is important because political discussion often treats the eventual regulatory cost as though the entire amount is already present at the pump. The policy can affect fuel costs while still being different in design and timing from an excise tax charged directly at a fixed number of cents per litre.

Having Enormous Oil Reserves Does Not Automatically Mean Cheap Diesel

Poilievre’s reference to Canada’s oil abundance is supported by government energy statistics. Canada holds roughly 163 billion barrels of proven oil reserves and produced a record 5.4 million barrels of crude per day in 2025, placing it among the world’s largest producers. But crude oil in the ground and diesel at a service station are different products connected through a long chain of extraction, transportation, refining, wholesale distribution and retailing.

Natural Resources Canada says Canadian refineries process roughly 1.9 million barrels of crude oil per day, far less than the country’s total crude production. Much of Canada’s oil is exported, historically with the United States as the dominant customer. Meanwhile, finished fuels trade in markets influenced by regional refinery capacity and international prices. The Competition Bureau describes crude costs, refining, distribution, marketing and taxes as major components of retail fuel pricing. That helps explain the apparent contradiction: a country can be a huge producer of raw petroleum while motorists and trucking companies still face high prices for a refined product. Large reserves can strengthen supply security without guaranteeing that Canadian retail diesel will always be cheaper than American diesel.

American Diesel Is Experiencing Its Own Historic Price Shock

The comparison with the United States can obscure just how unusual U.S. prices have become. The Energy Information Administration recorded national on-highway diesel at US$6.529 per gallon for the week of September 21, up from US$5.599 at the end of August. AAA reported that its national diesel average reached a record around US$6.53 per gallon during September. That means Canadian prices are not being compared with a low-price American market; both countries are dealing with an unusually severe diesel surge.

Global energy disruption is an important part of that increase. The Bank of Canada has warned that war-related supply interruptions have lifted oil prices and transportation costs, with diesel and jet fuel among the commodities showing elevated prices. Earlier in 2026, the Bank noted that higher diesel costs were already leading some businesses to introduce fuel surcharges. Ottawa cited conflicts in Europe and the Middle East when extending its excise-tax suspension in September. These global factors do not eliminate the role of domestic taxes or regulations, but they help explain why diesel has risen sharply even in the United States, where the Canadian provincial tax system obviously does not apply.

Why a Few Cents on Diesel Matter Far Beyond the Pump

Diesel prices attract political attention because the cost reaches far beyond owners of diesel passenger vehicles. Trucks carry enormous amounts of food, machinery, construction materials and consumer products through Canadian supply chains. Transport Canada data show that goods exported by truck were worth roughly $308.2 billion in 2024, with about 97.5% of those truck exports destined for the United States. Foodstuffs alone accounted for more than $27 billion of truck exports that year.

For a commercial vehicle consuming hundreds or thousands of litres a week, a difference of 10, 20 or 30 cents per litre quickly becomes a significant operating expense. Businesses can absorb some of that increase temporarily, negotiate fuel surcharges or eventually pass a portion through to customers. The Bank of Canada has specifically identified elevated fuel and transportation costs as a channel through which international disruptions can reach Canadian consumer prices. That is why the Poilievre-Carney argument is unlikely to remain confined to the House of Commons. Whether attention falls on provincial taxes, federal regulation, refining capacity or global markets, sustained diesel prices near current levels create pressures that can eventually appear in freight rates, farm expenses, construction budgets and the price of everyday goods.

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