taxpayers in the form of rebates, right-leaning parties portray it as a cash grab.
The Conservatives, who polls show could win the October election as a scandal over alleged political interference dogs Trudeau, promise to scrap the measure.
Ontario premier Doug Ford vowed to oppose what he called “the worst tax ever” in court.
“We’re going to keep fighting this carbon tax with every single tool at our disposal,” he said in a filmed statement.
Scott Moe, the premier of Saskatchewan, which has already launched a challenge, said he hoped the tax was an April Fool’s joke.
“We now have four provinces representing half the population in this nation that say this is a flawed policy,” Moe told the Canadian Broadcasting Corp.
Trudeau’s other efforts to combat climate change are also proving a challenge.
Last year the government unveiled legislation to overhaul environmental assessments of energy projects, paying more attention to greenhouse gas emissions. Critics say this will deter future investment at a time when existing projects are already in trouble.
Canada bought Kinder Morgan Canada Ltd’s Trans Mountain crude pipeline for $4.5bn last year after the company expressed doubts it could proceed with plans to more than double the existing capacity.