As in any part of the world, Europe has no harmonized tax policy in relation to digital currencies. However, cryptocurrencies attract a lot of attention from regulatory bodies. Each member state has enacted its own regulations, while certain countries follow the decision of the European Court of Justice.
At present, there is no simple answer as each country has its own taxation regulations. Additionally, taxation laws with regards to cryptocurrency trading are still being updated on a regular basis in most jurisdictions. Besides, each individual situation can be treated differently based on the frequency of trading, the amount of trading, etc.
We kindly suggest that you consult and familiarize yourself with your local taxation laws in relation to cryptocurrencies and contact local experts if anything is unclear.