The federal government stands to raise as much as $280 million in revenue off provincial carbon taxes in Alberta and B.C. in the next two years despite claims carbon taxes would be revenue neutral for Ottawa. In April 2016, the Canada Revenue Agency said provincial carbon taxes would be subject to GST. The GST revenues from carbon taxes could rise significantly once every province has implemented the carbon tax or cap and trade plan by next year. All but Manitoba signed an agreement in December committing them to introducing a carbon price.

Source: CBC News April 18, 2017 21:45 UTC