The provincial government is taking the next step in their fight against Ottawa's carbon tax.

Earlier today the Sask Party government filed a constitutional challenge in the Saskatchewan Court of Appeal over the federal government's attempt to impose a carbon tax.

The provincial government is seeking an answer from Saskatchewan's highest court on if the federal carbon tax is unconstitutional.

"The Greenhouse Gas Pollution Pricing Act was introduced into Parliament on March 28, 2018, as Part 5 of Bill C-74. If enacted, will this Act be unconstitutional in whole or in part?"

During a press conference Wednesday morning Premier Scott Moe said he doesn't believe the Trudeau government can legally implement the carbon tax on Saskatchewan.

"We do not believe the federal government has the constitutional right to impose this carbon tax on Saskatchewan industries, jobs, and families," Moe stated.

Moe also continued to stand by their Made-in-Saskatchewan Climate Change Strategy released in December 2017 saying "that plan does not include a job-killing carbon tax on Saskatchewan families." 

"We must also remember the cost to the economy if we were to stand by idly and allow this cost to be on the economic growth of our province of Saskatchewan understanding the industries we have here," he said. "In energy, agriculture, mining, and manufacturing as well as the cost of jobs and families across the province."   

Saskatchewan's Justice Minister Don Morgan said the best place to resolve this matter is in the courts.

"We want to put forward what we believe is a very strong argument and we have every confidence our lawyers will be successful," he said.

Morgan also shared they will be using staff lawyers in the case to save some money.

"So it's people that are working for us right now," he explained. "No doubt there is a cost to do this, but right now we're doing it internally."

The federal government sets a starting price at $10 per tonne of carbon dioxide emissions this year and plan to escalate to $50 per tonne in 2022. The money collected by the tax would go back to the province.