Carbon taxes will cause an increase in the price of fuel and energy. Petroleum producers and refiners will factor in the carbon tax into their pricing policies. Diesel will be greatly affected as it has a higher carbon tax than petrol. This is because diesel has a bigger impact on the environment than petrol therefore the carbon tax will be higher. It is estimated that the carob tax for Diesel will be 13c/liter and for petrol it will be 11c/liter.