The taxation of Cryptocurrency is likely to be very different in each country that permits its use. It is therefore beyond the scope of me and my website to give explanations as to how it might work in your specific jurisdiction.
I have been able to do compile a short list of the relevant Cryptocurrency Tax and Personal Tax areas for English speaking countries.
Some of these jurisdictions are still yet to implement any degree of Cryptocurrency Tax rulings or even tax parameters since both the asset class and technology is still in its relative infancy.
It would be down to you specifically to make contact with your local Tax Authority to identify if any tax is owed on the profits made on Cryptocurrency.