I don't have a fixed job, however, I can earn a little bit money from some teaching activities. It is very few, around about 300 Euros/ month, just extra money.
However, I don't know about the local law regarding tax here.Do I need to pay the tax even though I get such a small amount of money from freelance teaching or casually babysitting?
If so, what I should do next? To get a tax card? Thanks a lot

L