FBAR Deadline: 15 April, the Automatic Extension and Late Filing
When the FBAR is due, how the automatic extension to 15 October works, how it sits beside the US and UK return deadlines, the signature-authority and disaster extensions, and what to do now the 2025 deadline has passed.
The FBAR runs to its own clock: due on 15 April, with an automatic extension to 15 October that needs no request.
Written by the US UK Tax Experts team, cross-border tax specialists
FBAR deadline: an introduction
The FBAR deadline is 15 April after the calendar year you are reporting, with an automatic extension to 15 October. You do not need to ask for the extension. For calendar year 2025, the dates were 15 April 2026 and 15 October 2026. Today is 19 October 2026, so that extended date has just passed.
This article explains how the dates work, how they compare with your tax return deadlines and what "late" means now. Our full guide to FBAR and FATCA reporting covers the wider rules for Americans with UK accounts.
What the FBAR deadline applies to
An FBAR is the Report of Foreign Bank and Financial Accounts, FinCEN Form 114. US persons file it each year if their foreign accounts together exceeded $10,000 at any time in the year. The IRS FBAR page describes it as an annual report due 15 April following the calendar year reported. Therefore, one deadline covers every UK current account, savings account and ISA you hold.
Who sets the date
FinCEN is the Financial Crimes Enforcement Network, the Treasury bureau that receives the report. The IRS enforces it and assesses penalties. Consequently, the FBAR deadline is separate from your tax return deadline, even though the two often fall on the same day.
When is the FBAR deadline each year?
The FBAR is due on 15 April after the calendar year it covers. Every filer gets an automatic extension to 15 October, with no form or request needed.
The automatic extension to 15 October
The FinCEN Form 114 filing instructions say FinCEN grants filers who miss 15 April an automatic extension to 15 October each year. They add that specific requests for the extension are not required. In practice, 15 October is the real FBAR deadline for most people. However, nothing stops you filing in spring, and early filing leaves time to fix mistakes.
Weekends and holidays
The same instructions say the FBAR follows the federal income tax rule for weekends and legal holidays. If the due date falls on a Saturday, Sunday or legal holiday, a filing on the next working day is on time. For calendar year 2026, 15 April 2027 is a Thursday and 15 October 2027 is a Friday. Accordingly, neither date moves next year.
The dates for 2025 and 2026
For calendar year 2025, the FBAR deadline was 15 April 2026, extended automatically to 15 October 2026. For calendar year 2026, it is 15 April 2027, extended automatically to 15 October 2027. Living in Britain does not change either date. Unlike your tax return, the FBAR has no separate extension for Americans abroad.
How does the FBAR deadline compare with your tax return deadlines?
The US return has its own extensions for Americans abroad, and the UK return runs on a different year. As a result, you work to several dates at once.
The US return for Americans abroad
The US return is normally due on 15 April. However, US citizens living abroad get an automatic two-month extension to 15 June, with a statement attached to the return. Interest still runs on unpaid tax from 15 April. Furthermore, Form 4868 extends the filing date to 15 October in total.
The December extension does not reach the FBAR
IRS Publication 54 lets taxpayers out of the country ask for a further discretionary extension to 15 December. You send a letter explaining why you need it, before 15 October. That letter extends the tax return only. By contrast, the FBAR deadline stays at 15 October, and Publication 54 itself repeats the April date and October extension. Therefore, a December return can still be paired with an October FBAR.
The UK Self Assessment dates
Self Assessment is HMRC's system for collecting tax not taken through PAYE. According to the GOV.UK Self Assessment deadlines page, the 2025 to 2026 online return is due by 31 January 2027. Paper returns were due by 31 October 2026, and newcomers had to register by 5 October 2026. Consequently, the UK return often comes after the US filings it feeds. Our article on the FBAR filing service for the UK explains how we gather statements in time.
Are there any extensions beyond 15 October?
Only two kinds exist. One covers a narrow group of financial professionals with signature authority, and the other covers people in declared disaster areas.
The signature-authority extension
Signature authority is the power to control an account by instructing the bank, without owning the money. FinCEN has extended the deadline every year since 2011 for certain employees and officers with signature authority but no financial interest. The latest notice, FinCEN Notice FIN-2025-NTC3 of 8 December 2025, moves their date to 15 April 2027. It covers signature authority held during 2025 and all years extended by earlier notices.
Who the notice does not cover
The notice applies only to individuals first covered by FinCEN Notices 2011-1 and 2011-2. Broadly, those are certain officers and employees of regulated or listed entities and of registered investment advisers. It states that for all other filers the due date remained 15 April 2026. Therefore, a treasurer for a UK charity or a director of a private UK company is not covered. If you think the notice applies, check its terms closely, and treat 15 April 2027 as the latest date.
Disaster relief extensions
The IRS FBAR page says that if you are affected by a natural disaster, the government may further extend your FBAR due date. In past years, FinCEN has issued notices that follow the IRS disaster designations. The IRS lists its own announcements on its tax relief in disaster situations page. However, disaster relief for tax returns does not automatically cover the FBAR deadline. Accordingly, look for a FinCEN notice naming the FBAR before relying on any later date.
What happens if you miss the FBAR deadline?
A report filed after 15 October is late, and late filing is a violation that may lead to penalties. You should still file as soon as you can, and explain why it is late.
What "late" means now
The FBAR deadline for calendar year 2025 was 15 October 2026. So a 2025 FBAR filed from 16 October 2026 is late. The IRS FBAR page says filing late or not at all is a violation and may subject you to penalties. Notably, there is no grace period after October.
Delinquent FBAR procedures are gone
The IRS removed its Delinquent FBAR Submission Procedures page in July 2026. Its current page of options for taxpayers with undisclosed foreign assets no longer lists them. Therefore, you should not treat a late FBAR as a penalty-free route. Instead, a late FBAR carries the risk of a penalty, which the IRS decides on the facts.
Filing late with an explanation
The FinCEN instructions say that if a report is filed after 15 October, you choose a reason for late filing from a drop-down list. If none fits, you select "other" and write an explanation. In our experience, a short, factual explanation works best. For example, you might say you did not know a cash ISA was a foreign account and reported its interest on your return.
When the streamlined procedures fit better
If tax returns are also missing or wrong, a late FBAR alone does not fix the problem. The Streamlined Filing Compliance Procedures are for taxpayers whose failures were not wilful. Under the foreign offshore version, you file three years of returns and six years of FBARs. Our guide to IRS Streamlined Filing from the UK explains it in full.
What penalties can apply after the FBAR deadline?
Non-wilful penalties are capped per report, and wilful penalties are far higher. A reasonable cause exception can remove the non-wilful penalty altogether.
The non-wilful maximum
The penalty rules sit in 31 USC 5321, which sets the non-wilful penalty at up to $10,000 before inflation. The adjusted figure is in 31 CFR 1010.821. It is $16,536 for penalties assessed on or after 17 January 2025. In Bittner v. United States, the Supreme Court held that the non-wilful penalty applies per report, not per account.
By contrast, wilful failures carry a maximum of the greater of $100,000 before inflation or 50% of the account balance. The adjusted figure in 31 CFR 1010.821 is $165,353 from the same date. Moreover, the reasonable cause exception does not apply to wilful failures. That is why the reason for missing the FBAR deadline matters so much.
Reasonable cause and IRS discretion
The statute says no non-wilful penalty applies if the failure was due to reasonable cause and the balance was properly reported. The IRS manual on FBAR penalties lets examiners issue a warning letter instead of a penalty. Additionally, section 5321 gives the IRS six years to assess a penalty. Consequently, a missed year stays open for a long time, so it is worth putting right.
An example: a missed October date
Consider a typical case, which is an illustration rather than a real client. Daniel is a US citizen living in Manchester. He filed his 2025 US return on time and reported the interest on his UK savings. However, he forgot his FBAR, and on 19 October 2026 he realises the FBAR deadline passed four days ago.
Daniel's returns are complete, so the streamlined procedures are not needed. Instead, he files the 2025 FBAR now through BSA E-Filing, selecting a reason for late filing and adding a short explanation. He keeps a copy and the confirmation. No penalty is promised, but his position is far stronger than if he waited.
When the answer changes
Suppose Daniel had never filed US returns at all. Then a late FBAR alone would leave his returns outstanding. In that case, the streamlined procedures are usually the route to consider. Our article on not having filed US taxes while living in the UK explains the first steps.
How do you file and keep records?
You file the FBAR electronically through FinCEN's BSA E-Filing System. Then you keep the supporting records for five years.
Filing through BSA E-Filing
The IRS FBAR page says you must file the FBAR electronically through FinCEN's BSA E-Filing System. There is no paper version for individuals. FinCEN's own page on reporting foreign bank and financial accounts links to the form. You convert each balance at the Treasury year-end rate, as our article on the FBAR exchange rate explains.
Records for five years
The FinCEN instructions say you keep records for five years from 15 April after the year reported, or from the filing date if later. They include each account's name, number, bank address, type and maximum value. In addition, a copy of the filed FBAR helps meet the requirement. Therefore, save your statements and the BSA confirmation together each year.
Planning for the next FBAR deadline
The 2026 FBAR covers January to December 2026, so the work starts in January 2027. Download December statements early, because many UK banks keep online statements for a limited time. Next, list any account opened or closed during the year, since both still count. Furthermore, check whether you gained signature authority over a parent's, employer's or charity's account. Finally, aim to file with your tax return in spring, well before the October date.
The FBAR and Form 8938
Form 8938 is a separate FATCA form filed with your tax return. It follows the return's deadline, including any extension, rather than the FBAR deadline. Our article on what FATCA is explains how the two forms differ.
How US UK Tax Experts can help
We prepare and file FBARs for Americans in the UK, on time and from the same records as your returns. First, we list every account and find each maximum value. Next, we convert and file through BSA E-Filing before the FBAR deadline. If a date has passed, we work out whether a late FBAR or the streamlined procedures fit, and prepare the filings.
Our FBAR and FATCA service covers the forms each year. We also prepare your US and UK returns from one file, so the two agree.
Conclusion
In summary, the FBAR deadline is 15 April, with an automatic extension to 15 October that needs no request. The US return has its own June, October and December dates, and the UK return is due on 31 January. Only signature-authority and disaster notices go beyond October. Above all, if you have missed the date, file soon with an honest explanation, and do not treat late filing as penalty-free.
Contact us
Have you missed an FBAR, or want next year's filed on time? Email us at hello@usuktaxexperts.com, or tell us about your situation through our contact page. We reply within one working day with what we would need from you.
Frequently asked questions
The FBAR deadline is 15 April after the calendar year you report, with an automatic extension to 15 October. For calendar year 2026, the dates are 15 April 2027 and 15 October 2027.
No. FinCEN grants the extension automatically to every filer who misses 15 April. You do not file a form or write a letter.
No. The automatic 15 June extension for Americans abroad applies to the tax return, not the FBAR. The FBAR deadline is 15 October for everyone, unless a FinCEN notice says otherwise.
No. The discretionary extension to 15 December in Publication 54 applies only to the income tax return. Your FBAR is still due by 15 October.
The report is late, and late filing is a violation that may lead to penalties. You select a reason for late filing in BSA E-Filing and add an explanation if needed. The IRS removed its Delinquent FBAR Submission Procedures in July 2026, so late filing is not a penalty-free route.
The inflation-adjusted maximum is $16,536 per report for penalties assessed on or after 17 January 2025. The Supreme Court held in Bittner that it applies per report, not per account. No non-wilful penalty applies where there was reasonable cause and the balance was properly reported.
Only certain officers and employees of regulated or listed entities and registered investment advisers who have signature authority but no financial interest. Notice FIN-2025-NTC3 moves their FBAR deadline to 15 April 2027. Everyone else keeps the normal dates.
