You should listen to news and read latest articles in order to stay update. Bitcoin has been successfully recognized by so many developed countries of the world such as America, England, Japan and so on. Recently Germany has also recognized bitcoin which means it is legal in these states. Bitcoin is decentralized so no one can put tax on it.
If people cooperate with government then it will build economy as well and our living style will become more comfortable. Fiat is also helping us out in our countries but when we look at the cryptocurrency and furthermore discuss about tax then it feels irrelevant to pay tax on it as it is decentralized and government should give us free hand in it as they are collecting tax on other things so they have to make it tax free for us just like other countries are tax free for it. Government can make our living style comfortable as they are taking tax from us in other things.