All depends upon your law of country about digital currency , my first suggestion for you is that if bitcoin is allowed to use openly then do works manually to pay tax that what the law of your country's govt. Made .
Otherwise you have to pay tax by select the category of "other" , your lawyer can tell about it to you in very accurate way .
If you have no lawyer then don't don't take tension , simply google it " how to pay tax "  and then you will understand that how to do all the things .
But be Careful that if you are paying tax for the cryptocurrency earning then pay for all profit , otherwise do deceive the system .