In EU choices like your jurisdiction, company structure and place you conduct business from will make a huge difference. I think it's the most important thing y

In EU choices like your jurisdiction, company structure and place you conduct business from will make a huge difference. I think it's the most important thing you should worry about. You can end up working for 25 years in Germany just to end up with the same amount of money as someone who worked 15 years in Poland running the very same business and that's not including cost of living and bureaucracy costs. If you need to hire people the difference is going to be even bigger. Taxes are very real cost. They mean years of your working life, risks you could take, choice you can make, life quality you can afford, close ones you could help etc.