So basically &quot;you will always pay us a bit of your income,no matter where that income comes from, or you are no longer our citizen&quot;? That&#x27;s a bit of a mob mentality, and in general, not how countries work. You don&#x27;t need to pay taxes to be a citizen and enjoy protection of the law, otherwise what would we do with people who really don&#x27;t earn anything? Kick them out? I&#x27;m perfectly happy to pay income tax on the money made in Poland. But I see no reason to pay income tax on the money made elsewhere.<p>And yeah, I&#x27;m not totally sure about your example. I&#x27;m quite certain that I would pay 30% of my income in Poland, and then US would want a further 30% of the remaining amount, IRS would not care that I have already paid income tax in Poland.