As mentioned above, read the other threads. But to find a real and specific answer you will need to talk to a tax consultant in your country. The short answer is yes, I am not aware of any nation that does not have an applicable tax on bitcoin.
Depends what taxes are we talking about. Bitcoin is free of VAT tax in every EU country. Also in some countries, like Germany it's also free of income tax, if you held it for over a year and it's not your regular source of income. On the other hand it's best to pay taxes if you're planning to buy a house or a car with your coins, because most countries require the sellers to report civil law transactions and the revenue office likes to keep an eye on those. 
This confused me, in my country income in bitcoin not wearing VAT, and to work into bitcoin miner and farmer in his status is still in question, but if BTC redeemable it will have its own taxes every year
