If you are a U.S. citizen or a resident alien of the United States and you live and work in another country, you have to pay income tax to the local jurisdiction where you actually live and work. And you have to report this income on your United States income tax form as well. The US tax system works on a on a worldwide basis regardless of source and regardless of residency for U.S citizens and green card holders.

 » Read more about: Foreign Earned Income Exclusion  »

• April 15 – US filing deadline and due date for all taxes owned. If you fail to pay the estimated taxes by April 15th, you will be subject to interest and penalties for the underpayment.
• June 15 – Expatriates (US citizens or residents who living abroad on April 15) are given an automatic extension to file their tax return until June 15. Taxpayers must attach a statement to their return explaining their qualification for the extension.

 » Read more about: Expatriate Tax Deadlines  »