I was working with a Ukrainian guy for a few years, and he was always complaining about taxes and how he wanted to pay less. Eventually he told us he was paying an effective tax rate of 7% :D
Considering how tax money are being used in these countries, even 7% is too much. I don't mind taxes, but there's too much embezzlement so some dude in the parliament can buy lambos. An issue common to countries in the region, but less so in Poland or Romania.
These taxes we are debating here apply mainly to "contractors". In Romania there are incentives for permanent tech employees as well, getting closer to the 40% mark - a bit higher. Non tech seems like it's taxed more on par with northern europe (factoring in income tax, health care tax, and some other taxes idk much about).