my understanding of it was that green taxes are supposed to make people and companies take into account various social costs which otherwise they can get away with not paying. ie. the real 'cost' to the enviroment of chucking chemicals into the sea.
without green taxes the cheapest option here financially speaking (and what other way would shareholders think) would be to go ahead and do it. all you need is a truck. in real terms however, (including enviromental damage done) it is probably one of the most expensive options. The point of green taxes is to force people and companies to include in their calculations costs which would not neccessarily be charged to them.
that said, there is alot of grey with regards to those costs and things will often get very political.
Quoting ascii from 10:56, 30th Oct 2006
If a green tax works, then it should be revenue neutral.
Eg raise fuel tax => more tax pounds from petrol => people drive less => tax take decreases.
your example doesn't work, demand for fuel is fairly inelastic, so raising tax on it will generate extra revenue, as the quantity of fuel sold will not change enough to offset the price rise. If you mean that all money taken out should go back to repairing the damage done, then I would agree. Unfortunately often there is no practical way.
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