Re:IRS to ditch biometric requirement for online access
by rags2riches on Tuesday February 08, 2022 @03:26AM
(#30256076)
(Slovakia is a Central European country, far from Baltic.) But all three of Estonia, Latvia and Lithuania also have pretty flat tax rates I believe. Not sure about deductions and other details.
https://taxfoundation.org/flat-tax-lessons-slovakia
https://accace.com/tax-guideline-for-slovakia/