Tax law is dependent on your country and locality. Recently in the United States, the IRS has declared that Bitcoin is to be treated as property, not currency, for tax purposes. All income in the US is taxed, regardless of what form it takes. If youre paid in bitcoins, youre supposed to pay taxes on your earnings at the BTC/USD exchange rate when you receive payment.
Is it a good decision or bad?
the need for clear regulation of bitcoin in order for the relevant authorities to monitor its sale so as to avoid tax evasion, because to minimize the actions we do not want such as theft and murder.