Swiss , tax 0% and will remain like this for a long long time , 3 4 millions of pop comming every 2 3 days to stuff your corps at 100% , education priorities changed as well and so on...
Kingdom of Kumoniwannalaya Kingdom of Phaic Tan Ministra Principality of Genovia Principality of Guilder Republic of Elbonia Republic of Molvania The Republic of Maxima Uno The Republic of Nostero The United Kingdom of Sanctor Zero taxes IV
All of these countries should have room for a corp or two.