U.S. Tax Deadlines and Extensions for Expats
Reviewed by the Fairlight Accounting cross-border tax team — U.S. & Canadian Tax Desks
Expat tax deadlines are the filing and payment dates that apply to U.S. citizens and green-card holders living outside the United States. They are more generous than domestic deadlines for filing, identical for paying, and layered with separate dates for foreign account reports and estimated taxes — which is why "when is my return due" has four answers.
On this page
When is my U.S. return due if I live abroad?
June 15, automatically, if on the regular April due date you live outside the U.S. and Puerto Rico, or you are in military service outside the country. No form is required; you attach a statement to the return saying you qualified. If June 15 falls on a weekend or holiday, the deadline moves to the next business day.
Does the extension cover payment too?
No. Any tax owed is still due April 15. The June extension is for filing, not paying; interest accrues from April 15 on the balance, and the late-payment penalty applies after the extended filing date if the balance isn't paid. Expats who expect to owe should estimate and pay by April 15 even if the return follows in June.
Can I extend past June 15?
Yes, to October 15 by filing Form 4868 before June 15 — the same extension domestic filers use, which for expats runs from the June date. Beyond that, a further extension to December 15 is available by writing to the IRS with a reason before October 15; it is discretionary, not automatic, and the IRS doesn't confirm it unless denied.
What is Form 2350 for?
For expats who need more time to qualify for the foreign earned income exclusion — typically a first-year expat who hasn't yet completed 330 days abroad or a full tax year of residence by the normal deadline. Form 2350 extends the filing date to about 30 days after you expect to qualify, so the exclusion can be claimed on the original return rather than by amendment.
When is the FBAR due?
April 15, with an automatic extension to October 15 — no form needed. The FBAR is filed electronically with the Treasury's Financial Crimes Enforcement Network, not with the IRS, and isn't covered by the Form 4868 extension; the two extensions simply happen to land on the same date. Form 8938, by contrast, is part of the income tax return and follows the return's deadlines.
Do expats owe quarterly estimated taxes?
If you expect to owe U.S. tax after credits and exclusions — common for expats with investment income, self-employment tax, or income above the exclusion — estimated payments are due April 15, June 15, September 15, and January 15. No extension applies to these; the June filing extension does not move the June estimate.
What happens if I miss everything?
Penalties for late filing and late payment, plus interest — unless no tax was owed, in which case the failure-to-file penalty is zero because it's computed on the balance due. The real exposure is in the information returns (FBAR, Form 8938, Forms 5471 and 3520), whose penalties don't depend on tax owed. For expats behind by several years, the Streamlined Filing Compliance Procedures are the structured way back.
Frequently asked questions
I moved abroad after April 15. Do I get the June extension this year?
Only if you were abroad on April 15. Otherwise the standard deadline applied for that year, and you'd use Form 4868 for an extension.
Does the June extension apply to state returns?
No. Each state sets its own deadline and extension rules; most follow the federal April date and require their own extension form.
I'm owed a refund. Is there a deadline to claim it?
Yes — generally three years from the original due date. After that, the refund is lost even though no penalty applies.
Can I file the FBAR after October 15 if I forgot?
File it as soon as possible with an explanation. Late FBARs with reasonable cause and no unreported income are often accepted without penalty, but the delinquent-filing process should be followed rather than simply filing silently.
Next step
Fairlight Accounting handles U.S. domestic, cross-border (U.S.–Canada), and international tax returns, plus bookkeeping, payroll, and CFO advisory. If you want your U.S. deadlines mapped for the year — including a first-year exclusion extension or a catch-up plan — our U.S. Tax Desk can set the calendar with you. See pricing or book a free fit call.
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