Any time anyone gives any money to the government and they give it back, it is not "revenue neutral".  

They will need to hire thousands of new federal government employees to manage the massive amounts of paper work related to the carbon tax.   Then if they end up giving back 100% to the provinces they will need to go further in debt or increase taxes (revenue) elsewhere to pay for the new "Carbon Tax" department in Ottawa.

This doesn't even include the additional GST revenue from everything becoming more expensive and the additional income tax revenue from the "Carbon Tax" department employees.

I guess True Dumb and his band of fools never learned that you can't dig yourself out of a hole (or tax yourself into prosperity).

This countries economy is quickly being flushed down the toilet!