i dont think so, government will know our information if we transfer bitcoin to pay tax. They will know about our secret funds in bitcoin. Then, they will make tax for bitcoin user later. So, i think dont let government know we have bitcoin. Its bad idea.
If once government start accepting bitcoin they will come up with a good solution about paying taxes with bitcoin. We have to pay taxes to government. Other wise Income tax people will research about your banks account and they will seize all your account, if you don't pay taxes on time.