Depending on where you live in Canada the spread from regular to premium gasoline in the wholesale price for gas stations ranges between 6 and 11 cents a litre. However many stations charge a difference of 32 cents a litre between the two blends. The wider difference commonly seen in pump’s prices between regular and premium, is the markup gas stations charge minus GST/HST and the wholesale price difference. For a more complete explanation see:
From Our FAQs:
In Canada, gas prices are determined by a combination of factors, including the global price of crude oil, refining costs, distribution costs, taxes, and competition among gas stations. The price of crude oil is set by the global market, influenced by supply and demand dynamics, geopolitical events, and other factors.
Governments at various levels in Canada impose taxes on gasoline, including federal and provincial taxes, as well as in some cases, municipal taxes. These taxes can vary by province and city, contributing to regional differences in gas prices.
While there is no single entity that sets gas prices across Canada, the Competition Bureau of Canada monitors the market to ensure that competition laws are followed and that there are no illegal anti-competitive activities affecting prices.