If you are a U.S. citizen or resident alien, the rules for filing income, estate, and gift tax returns and paying estimated tax are generally the same whether you are in the United States or abroad. You are subject to tax on worldwide income from all sources and must report all taxable income and pay taxes according to the Internal Revenue Code.

Many Americans living abroad qualify for special tax benefits, such as the foreign earned income exclusion and foreign tax credit, but they can only get them by filing a U.S. return. 

U.S. taxpayers who own foreign financial accounts must report those accounts to the U.S. Treasury Department, even if the accounts don’t generate any taxable income. Taxpayers should file a Report of Foreign Bank and Financial Accounts (FBAR) electronically by April 15, 2024, using the BSA e-filing system.

The FBAR is an annual report, due April 15 following the calendar year reported. You’re allowed an automatic extension to October 15 if you fail to meet the FBAR annual due date of April 15. You don’t need to request an extension to file the FBAR. For further details see report of Foreign Bank and Financial Accounts (FBAR).

Taxpayers must also report virtual currency transactions to the IRS on their tax returns; these transactions are taxable by law just like any other property transaction. For more information see virtual currencies.

When to file

If you are a U.S. citizen or resident alien residing overseas or are in the military on duty outside the U.S., on the regular due date of your return, you are allowed an automatic 2-month extension to file your return without requesting an extension. If you use a calendar year, the regular due date of your return is April 15, and the automatic extended due date would be June 15. If the due date falls on a Saturday, Sunday, or legal holiday, the due date is delayed until the next business day.

If you qualify for the 2-month extension but are unable to file your return by the automatic 2-month extension date, you can request an additional extension to October 15 by filing Form 4868, Application for Automatic Extension of Time To File U.S. Individual Income Tax Return, before the automatic 2-month extension date. Even if you are allowed an extension, you will have to pay interest on any tax not paid by the regular due date of your return.