Hi greece btc community

I have a simple question, what are the current rates for taxation of a Proof of Stake coin (i guess its called capital gain tax)

i heard its about 15%, but nobody could verify it and i googled hours after hours, but could not find any decent informations.

Does anybody of you taxed their PoS coin already in greece ? And if yes what tax % you paid for it ?

Thank you, appreciate it !