If you're a US citizen it's not so easy. You are taxed on your worldwide income no matter what. There is a deduction for living abroad on the first $100,800 (2015) of income or you can also take a credit for income taxes paid to another country. You also need to pay into SS and Medicare either in the US or in another country which we have a treaty with. Don't get me wrong, getting the first $101k @ 4% tax sounds pretty good! Just want to make it clear that US citizens will pay taxes to Uncle Sam no matter where you try and hide.