[s_dev]

There is only so much you can play whack a mole -- virtually nobody 'cheats' the taxman. There are plenty of legal loopholes etc. if you are smart enough to use them.

If you aren't -- you'll find the enforcement end of the tax authorities in ANY country are pretty efficient. Even in third world countries where many services are falling down the tax authorities will be a well oiled machine as the stability of the entire country rests on the government even corrupt ones to collect taxes.