It will probably alright to big earners but bothering to small fishes but I am pretty sure that it will be base on your capability to pay it like what is commonly ordered by the government ( I don't know if there are some other rules about taxation in other countries ).
Having this tax is good in general and will surely benefited the people in terms of social services and infrastructures but can also assume the possible changes that might happen in to your coin's total value which can possibly decrease.