Well, right now governments doesn't apy any taxes for selling or buying Bitcoins because they first have to get knowledge about it and not soanyso people make profit from Bitcoin to pay taxes. Right now it is not such a big problem for them. But if you want to be sure thag you are not receiving home any amend for the money you have in your bank account it is better to go and pay taxes and you say that you made the money from freelancing. They are going to understand
I barely understand the English but i see your point. It is really hard to state freelancing as a job. You got many companies to vouch for you but it is also harder it those companies are online. Especially with this anonimity and you cant exactly show your address. It is better to earn money at least make some Real life investment like an internet cafe or restaurant. As you are the owner, you can add money to your income stating you had many costumers.