Tax deadline 2025
Updated on December 10, 2025
by Clark Stott
Clark Stott has been with Expat Tax Online since 2015. Being a dual national based in the UK, Clark has unique experience helping US citizens (and Accidental Americans) become tax compliant via the Streamlined Tax Amnesty program. Clark likes to help Americans in the UK keep their tax situations as simple as possible to avoid harsh IRS treatment.
Table of Contents
US tax deadline 2025 for 2026: A guide for Americans living abroad
The US tax deadline for 2025 income (filed in 2026) gives Americans abroad a bit more time to file than people in the US, but it can also lead to surprises if you don’t understand how the dates work.
What is the US tax deadline for 2025 income (filed in 2026)?
The standard US tax filing deadline is April 15, 2026.
But, good news! Americans abroad automatically get an extension until June 15, 2026.
The longer story is that the US uses a calendar-year tax system, so all income earned from January 1 to December 31, 2025, is reported on a return that you file in 2026.
If, on April 15, you live and work outside the US and your main workplace is abroad, you generally qualify for the automatic filing extension to June 15.
What is the US tax deadline for 2025 income (filed in 2026)?
The standard US tax filing deadline is April 15, 2026.
But, good news! Americans abroad automatically get an extension until June 15, 2026.
The longer story is that the US uses a calendar-year tax system, so all income earned from January 1 to December 31, 2025, is reported on a return that you file in 2026.
If, on April 15, you live and work outside the US and your main workplace is abroad, you generally qualify for the automatic filing extension to June 15.
US tax deadlines for 2025 income (filed in 2026)
Here’s a quick overview of the main filing deadlines that apply to Americans abroad.
|
Deadline |
Applies to |
What it means |
|
March 15, 2026 |
Americans abroad |
Foreign trust filing deadline |
|
April 15, 2026 |
All US taxpayers |
Standard tax return due date; taxes owed must be paid |
|
June 15, 2026 |
Americans abroad |
Automatic 2-month extension to file |
|
October 15, 2026 |
Anyone that filed Form 4868 (Extension) |
Extended filing deadline |
|
December 15, 2026 |
Further extension |
Extra extension with a written request |
Do Americans abroad still need to pay by April 15, 2026?
Yes, the IRS still expects payment by April 15, even if you file in June.
And this is the part many expats get wrong. Filing later doesn’t delay the bill. The IRS charges interest on unpaid taxes starting April 15, regardless of whether you’re in London, Dubai, or Sydney. It’s not harsh; it’s just how the system is built.
For example:
Let’s say you owe US$800 in US tax for 2025. Even if you file your return on June 10, the IRS will add interest for the period from April 15 through June 10. It’s not usually huge, but it’s there.
So while expats enjoy more time to file, they don’t get more time to pay.
What forms are due for the 2026 US tax deadline?
Below are the ones most Americans abroad will file when submitting their 2025 tax return in 2026.
- Form 1040 – Your main US tax return
- Schedule 1, 2, and 3 – Extra income and adjustments, if applicable
- Schedule A – Itemized deductions (psst. Most Americans abroad claim standard deductions).
- Schedule B – Required for foreign bank accounts, interest and dividends
- Schedule C – Foreign self-employment income
- Schedule D – Foreign capital gains and losses
- Schedule E – Foreign rental income from investment properties
- Form 2555 – Claim the Foreign Earned Income Exclusion (FEIE)
- Form 1116 – Claim the Foreign Tax Credit (FTC)
Most expats use either the FEIE or the FTC to reduce or eliminate US tax. Picking between them isn’t about right or wrong; it’s more about what works for your income and the country you live in.
Transitioning from the main forms to the international ones is where many expats get nervous, so let’s break those down too.
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International forms that are due with your 2025 tax return
These forms apply specifically to foreign assets, investments, and income sources. Many expats never touch them, but if you do, the deadlines line up perfectly with your primary tax return.
|
Form |
Purpose |
Deadline |
|
Form 2555 |
Exclude foreign-earned income |
Same as tax return |
|
Form 1116 |
Claim foreign tax credit |
Same as tax return |
|
Form 8938 |
Report foreign financial assets |
Same as tax return |
|
PFIC reporting (foreign funds) |
Same as tax return |
|
|
Treaty-based filing position |
Same as tax return |
Some countries’ funds, such as UK OEICs, Australian managed funds, or EU ETFs, are considered PFICs, which is why Form 8621 exists. It’s not your fault they’re complicated; they just are.
FBAR Deadline for 2025 (FinCEN Form 114)
The FBAR is not filed with your tax return and is not sent to the IRS. It is submitted to FinCEN, the Financial Crimes Enforcement Network, but the filing process is surprisingly straightforward.
If all your foreign accounts combined pass US$10,000 at any time in 2025, you file an FBAR.
|
Requirement |
Deadline |
|
FBAR due date |
April 15, 2026 |
|
Automatic extension |
October 15, 2026 |
|
Filed with |
FinCEN (not IRS) |
Although the FBAR is filed separately from your tax return, its automatic extension to October 15 runs on the same schedule as your extended income tax deadline, which makes it convenient.
Do you need to make estimated tax payments in 2026?
Most Americans abroad don’t need to make quarterly estimated tax payments, especially if they work for a foreign employer. But, if you’re self-employed, run your own business, or have income that isn’t taxed through payroll, you may need to make estimated payments to avoid an underpayment penalty.
Estimated tax deadlines for 2026
|
Quarter |
Deadline |
|
Q1 |
April 15, 2026 – Wednesday |
|
Q2 |
June 15, 2026 – Monday |
|
Q3 |
September 15, 2026 – Tuesday |
|
Q4 |
January 15, 2027 – Friday |
Important! If you end up owing under US$1,000 at the end of the year, you’re generally safe from penalties, even if you never paid quarterly taxes at all. It’s one of the few forgiving corners of the US tax system.
What happens if you miss a US tax deadline?
Missing a tax deadline doesn’t automatically mean chaos, but the IRS does have a system of penalties that kick in depending on what exactly you missed.
Failure-to-File penalty
This one is steep. It’s usually 5% per month of the unpaid tax, up to 25%.
If you’re going to miss the deadline, filing something on time, even an extension, is much cheaper than filing nothing.
Failure-to-Pay penalty
This one is lighter: typically 0.5% per month.
Interest also accrues, but at a low rate. Think of it more like a nudge than a punishment. Still annoying, but survivable.
Additional risks for expats
If tax debt becomes “seriously delinquent,” which is currently defined as more than US$64,000 in unpaid federal tax, penalties, and interest for 2025, the IRS can request that the State Department restrict or revoke your US passport.
But the scenario is very rare and almost always avoidable.
Simple checklist for filing your 2025 taxes from abroad
Here’s a small, beginner-friendly list to make things easier:
- Gather your foreign income documents
- Check your foreign bank balances for FBAR purposes
- Decide whether FEIE or FTC makes more sense
- Plan to pay any tax due by April 15, 2026
- Figure out whether you need an extension
- Keep copies of local tax filings (applicable for credits)
Think of this as your “no stress” starting point.
Need help filing before the 2026 deadline?
If the US tax deadline 2025 for 2026 feels overwhelming or just annoying, you’re not alone. Every expat eventually hits the point where filing on your own becomes more effort than it’s worth.
Getting support from a tax professional who works specifically with Americans abroad can save a lot of time, money, and worry. Even one conversation can help you understand whether you’re filing correctly or missing opportunities.
Whenever you’re ready, we’re here to help you sort everything out and file with confidence.
FAQs
-
Do I need a US address to file my 2025 tax return from abroad?
No. You can file from anywhere. A mailing address is useful for IRS notices, but it doesn’t need to be in the US. Many expats use a family member’s address or a tax professional’s secure mail service.
A foreign address won’t cause problems with your tax return.
-
Can I still file if I don’t have all my documents by June 15?
-
What if I didn’t know I needed to file US taxes until now?
-
Does the automatic June 15 extension apply if I’m visiting the US during tax season?
-
Are extensions “red flags” to the IRS?
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