In the early 80s if not mid 70s, there was an instance where a 10% tax was imposed and the result was a doubling of commodity prices.
For every new increment in a system you take you must compensate for the addition in order to balance the outcome e.g. if you decide to turn up the flame while cooking you must be ready to stir alot more aggressively to save the cooking, if you decide to floor your accelerator while you go about your transport business, you must be ready to increase the visits you make to the automobile service center, if you decide to add turbo units to your engine be ready to bear the consequences of unaccounted for stress within the combustion system.
So in short an increase on one end will lead to the collapse of another end since no compensation strategy is in place, if not defensive measures will be taken, like opting out on buying a commodity which beats the purpose of imposing the tax in the first place if at all it is to collect the targeted billions by the government.
I find this strategy lame and narrow minded. The problem isn't the money it is the way it is collected