You have to be careful about dealing with your country's tax office because "substance" doesn't mean "find the cheapest labour cost" and show that they work for you. You can show that but i bet the next question would be for them to ask what their contribution to the company is, what are they doing for you. If you are doing something related to programming, then having a micro-company in Romania makes a lot of sense because you can hire cheap programmers here and nobody will ever question this. If you don't have a reason to build substance other than lowering taxes in your country you are pretty much fucked because all the OECD laws are created specifically to avoid what you are trying to achieve.So I can efficiently build substance