Is there really a country in this world where you can just cash out and nobody will even think of telling you to pay tax on your newfound wealth?
Anywhere in the EU, they probably won't do shit unless it's over 100k per year. But don't hold me to that.
If (as far as i know) you want to do it by the book as i do to avoid problems in the future:
For people with small profits like me, just register a UK company as a sole trader, that gives you the first 12,500 GBP (about $15k ) tax free, you will need to register and get an NI number and only need to pay NI contributions of about 240 GBP a year. Then there are pleanty of other contries in the EU that you don't need to reside in to register as being able to trade some with tax free allowances for first few thousdand. If you have the time and put in the effort and research you can get a massive chunk out tax free and legally and at the very worst it's a grey area.
Look into Malta and Andorra if you have a decent amount and want to keep all the tax affairs in one place and If you are talking about millions then pay someone in the cayman islands or set up your own 3 way company like all the massive companys like google do.
I have only took out a few thousand since 2012, but it's all been legal as far I have have looked into. If anyone knows differnt i would like to hear from them as i don't want a knock on the door in 20 years saying i owe money to someone somewhere.