US Tax Deadlines When You Live Outside the US

Tax Filing Last reviewed 2 September 2026 · 6 min read

Living outside the United States changes your filing deadlines — usually in your favour. Most people either do not know about the extension they automatically receive, or misunderstand what it actually extends.

The dates below are described by the rule that sets them rather than as a fixed calendar, because every one of them moves to the next business day when it falls on a weekend or a legal holiday. Check the exact date for the year you are filing.

The standard deadline: 15 April

For a calendar-year individual return, the US federal filing deadline is 15 April of the following year. This is the date everything else is measured from, including interest.

Living abroad: an automatic extension to 15 June

If, on the regular due date, you are living outside the United States and Puerto Rico and your main place of business is outside the US, you receive an automatic two-month extension to 15 June.

Automatic means what it says: you do not apply for it and there is no form to file in advance. You should, however, attach a statement to the return explaining which condition qualified you. This also applies if you are on military service outside the US.

The catch, and it is a real one: this extends the time to file, not the time to pay. Interest runs on any unpaid tax from 15 April regardless. The two months are genuinely useful, but they are not free if you owe money.

Extending further: 15 October

Filing Form 4868 extends the deadline to 15 October. Anyone can use it, and it is granted automatically — you do not need a reason.

If you already have the June extension because you live abroad, Form 4868 still takes you to October rather than adding two further months on top. The extensions do not stack.

In genuinely exceptional circumstances, taxpayers abroad can request a further discretionary extension to 15 December by writing to the IRS. It is not automatic and it is not granted as a matter of course.

The point everyone misses

This is the single most expensive misunderstanding we correct, and it is entirely avoidable.

FBAR: a separate deadline, separately enforced

If your foreign financial accounts exceeded the reporting threshold at any point in the year, you must file FinCEN Form 114 — the FBAR. For anyone living in India with Indian bank accounts, this is likely to apply.

Three things make it different from your tax return:

• It is filed with FinCEN, not the IRS, and electronically — not attached to your return.

• Its due date matches the tax return date, but it carries an automatic extension to 15 October that requires no request at all.

• The threshold is an aggregate across all your foreign accounts, and it is tested against the highest balance during the year — not the year-end balance.

FBAR penalties are assessed independently of anything to do with your tax return, and they are not proportionate to tax owed. An FBAR can be required in a year when you owe no US tax whatsoever.

If you are a non-resident with US income

Non-residents file Form 1040-NR, and the due date depends on the nature of the income:

• If you received wages subject to US withholding, the deadline is the standard 15 April.

• If you did not, the deadline is 15 June.

Filing a 1040-NR usually requires an ITIN if you are not eligible for a Social Security Number — see our guide to getting an ITIN from India. Because ITIN processing takes weeks and slows further during the filing peak, the practical deadline for an ITIN application is much earlier than the filing deadline itself.

If you own a US company

Company deadlines are separate from your personal ones and are easy to overlook:

• Foreign-owned single-member LLC: Form 5472 with a pro-forma Form 1120, due on the corporate deadline for the year, extendable with Form 7004. This is required even when no tax is owed — see our LLC guide.

• Partnerships and S corporations: earlier than individual returns, generally in March.

• State annual reports: set by each state on its own schedule, unrelated to any federal date.

Estimated tax payments

If your income is not subject to US withholding — self-employment, rental income, investment income — you may need to pay estimated tax quarterly rather than in one annual payment. The instalments fall in April, June, September and the following January.

Underpaying across the year can trigger a penalty even if you settle the full balance on time at filing, which catches people who assume one payment at the end is sufficient.

If you are already behind

Missed years are more common than people assume, particularly among Indian nationals who did not realise US citizenship or a green card carries a filing obligation while living abroad.

There are established IRS procedures for taxpayers who failed to file because they genuinely did not know they had to, and they exist precisely for this situation. They are considerably better used before the IRS makes contact than after. If that describes you, it is worth a conversation rather than a decision made alone.

Note: This guide describes general US federal deadlines and is not advice on your specific circumstances. Dates shift for weekends and holidays, and the IRS grants relief in disaster situations. Confirm the dates for your filing year before relying on them.