> Expats aren’t double taxed but you need to file tax returns to offset taxable income that’s already been taxed. There are specific agreements to avoid double taxation

Glad to hear it, because what Americans told me (that they get taxed for the same money they paid tax on in their host country) is bonkers.

EDIT: Seems there's some disagreement ;) The other commentor echoes what I've heard from Americans living in Europe. Absolute madness. I also heard it's very costly to try and give up your American citizenship, exactly to protect that juicy free tax America gets from it's expats.

> If they can do it to Apple, why not to regular citizens?

They already do. Knowledge worker migrants were promised eight years of tax breaks by the Dutch government, who later changed their minds after those people already moved to the Netherlands.

This isn't even that though, this is the EU saying the agreement made by Ireland with Apple wasn't legal. It's like how they get people who avoid tax by finding loopholes to pay back-taxes once the tax office catches them (yes, this happens too).