Depending on what country you live in, your cryptocurrency will be subject to different tax rules...
source https://www.google.com/url?rct=j&sa=t&url=https://www.zerohedge.com/news/2019-04-15/5-cryptocurrency-tax-questions-ask-april-15th&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNHfi8deuLezgA_GDwtkzFFwVPNhhw