@nickster;
# for individuals and SMB from up to 2~5m, NW-EU is pretty much locked down in terms of SOLID offshore solutions. solutions will be offered, but either you or your agent will constantly have to watch their back. since '08~10, most/all traditional offshoring while physically remaining as citizen/corp of solemnly the most developed nations has disappeared.
# S(E)-EU may still have loopholes. either because the governments don't possess [or even prioritize] large fiscal manpower OR they operate retrospectively rather than proactive. the latter is a huge thing. a lot of governments just don't bother with a citizen until said person arouses reasonable interest. i know in many many countries, a person with no otherwise registered income earning cash online can just make money, wire it to his country by fairly simple methods and as long as he doesn't pull up in a mercedes s-class he could live to 99 doing just that. thing is -- PROACTIVE governments won't allow this. you are a citizen without registered income/your registered income has halted but 6 months later you still happily pay rent and buy 2 breads a week? as far as a proactive irs is concerned, if you're not on welfare by then, this should not be possible. a person with legitimately 0 income and no welfare can only be dead- after all. he shouldn't be alive, eating and paying rent. from there, a proactive govt will take punishment very far.
# considering i've hired spanish people at $800/mo for a decent time, knowing for a fact they don't declare a dime of it, and still walk free today, i must assume spain is among the nations not proactively investigating its citizen's low-scale tax duties.
# i mention $1m because honestly i don't see the point in being an entrepreneur if it's not to realize higher objectives. if someone aspires $100k they're
better off as a 9-5 employed expert [serious!].
# ps; $1k/mo is sufficient to fund outter-city cost of living in spain. perhaps from such viewpoints, i can see why someone considers $1m as ambiguous. coming from nw-eu, i'd probably react similarly to persons claiming to aspire $10m

or a luxembourgh business owner hearing $100 [similarly, $10 would appear realistically approachable there] this is the PPP issue i'm also stressing when people seem to over-prioritize lowered cost of living as motive when planning relocation.
Dream no small dreams for they have no power to move the hearts of men -- Goethe.