Edited sentence: A recent study by the Fraser Institute verifies that in this tax's early years, it was truly revenue neutral.And, needless to say, the carbon tax was simply layered on top of other regulations, rather than replacing them.But a closer look at the details shows that rather than cutting other tax rates, the government has tinkered with boutique measures targeted at specific subgroups of the population through special interest tax deductions like Children's Fitness Credit and Children's Art Credit; Small Business Venture Capital Credit; Industrial Property Tax Credits and a School Property Tax Reduction for Farm Land.But by 2014/2015, only five years into the tax system, revenue neutrality was gone and the government had taken to creative bookkeeping to disguise the fact.Personal and corporate taxes were reduced and additional tax reductions were introduced to ensure full recycling of the proceeds.Subsequent to the Fraser study, the B.government has restored revenue neutrality in the overall economic sense