The Federal government says some form of carbon pricing is coming, but Saskatchewan Premier Brad Wall says he won't be signing for it.

On Saturday, Wall posted to his Facebook page saying it's not the time for a new national tax, including carbon.

"In case you're wondering, I won't be signing any agreement that includes a national carbon tax," he wrote.

His comment stems from a federal government announcement about forming working groups to discuss carbon pricing and other environmental measures over the next six months.

Catherine McKenna, federal environment minister, said Friday that one of the measures at the end of the discussion process will be a price on carbon.

Wall said in the Facebook post that the decision was made before the provinces and prime minister had a chance to meet to discuss the topic.

He's been vocally opposing a national carbon tax. On Feb. 19, he said any scheme that involves imposing a carbon levy or tax would be ill-timed due to the current state of the industry.

The premier was unavailable for comment Saturday.