As more and more Americans consider retiring abroad, it's important to understand the tax implications of living in a foreign country after leaving the workforce. Whether you're moving to take advantage of a lower cost of living, a warmer climate, or a different cultural experience, retiring abroad can have significant tax consequences. The US tax system is unique in that it taxes its citizens on their worldwide income, no matter where they reside. Learn what the key tax considerations are for US citizens who plan to retire overseas.