>As for taxes - they are one of the lowest in europe, specifically regarding softweare companies.
I researched Bulgarian market when we were looking for a place to open an EU branch.
Nominal taxes are low, but a dazzling assortment of different welfare charges effectively amounted to extra tax. That's not much different how it's typically done in other ex-bloc countries.
Before that, during my years freelancing, ePAM systems tried to bring me there on a very competitive package, comparable to what I had in Canada.
When the talk came to taxes, I just got that "don't worry, we have good tax consultants," and then when I persisted on getting to know how it all is gonna work, I was told of a dizzyingly complex scheme where they were to setup 2 companies on my behalf and "lease intellectual property" from one, while I would've been getting near zero interest loan from another, owning a stake in it.
After hearing that, I firmly changed my mind.
My advice to Eastern European taxmen would be to stop disguising tax as welfare charges. Plainly admit that the net tax rate closes on to 40%, and work from there.