The FBAR Statute of Limitations: Six Years to Assess, Two Years to Sue

People who know a little tax law assume the FBAR follows the normal three-year assessment rule for tax returns. It does not. The FBAR is a Bank Secrecy Act report, and its penalties are governed by Title 31 of the U.S. Code. The IRS says it plainly in IRM 4.26.16.5.1: when it assesses and collects FBAR penalties, it is not acting under Title 26 but under the authority of Title 31, and provisions of the Internal Revenue Code generally do not apply to FBARs.

That changes the clock.

Six years to assess

Under 31 U.S.C. 5321(b)(1), the Secretary of the Treasury may assess a civil penalty at any time before the end of the six-year period beginning on the date of the transaction with respect to which the penalty is assessed.

For a report that was not filed, what is the "transaction"? IRM 4.26.17.3.1.1 answers that for reporting violations, the date of the transaction is the due date of the FBAR. For calendar years 2015 and earlier, the due date was June 30 of the following year. For calendar year 2016 and later, the due date is April 15 of the following year, and the manual tells examiners to treat April 15 as the date the statute begins to run, even though FinCEN grants an automatic extension to October 15.

So, for the calendar year 2020 FBAR, due April 15, 2021, the IRS treats the six-year assessment period as running from April 15, 2021. For calendar year 2025, due April 15, 2026, the clock starts April 15, 2026.

Each year is its own violation with its own six-year clock. Old years fall away one by one.

A worked timeline

Suppose today is October 2026 and you have never filed an FBAR, though you have had foreign accounts over $10,000 every year since 2015. Which years can the IRS still penalize?

• Calendar year 2019: due April 15, 2020. Six years from that date ran to April 2026. Generally closed for a reporting penalty.
• Calendar year 2020: due April 15, 2021. Open until April 2027.
• Calendar years 2021 through 2025: each open for six years from its own April 15 due date.

That is roughly six open years at any moment, which is exactly why the compliance programs focus on six years of FBARs. It is also why waiting has a strange double edge. Each year that passes closes an old year, but it opens a new one if you are still not filing. The window does not shrink. It slides.

Two warnings about this kind of math. First, if you sign an FBAR statute extension, the dates move. Second, a recordkeeping violation can be measured from a much later date, as explained below.

Recordkeeping violations run on a different clock

The FBAR rules also require you to keep records. IRM 4.26.17.3.1.1 explains that the date of the transaction for a recordkeeping violation is the date the examiner first requests the required records by summons. The manual notes that records must be kept for five years from the date the FBAR was due, that the examiner's first request must come within that five-year period, and that the date of the request starts the six-year statute.

In practical terms, if you are examined and cannot produce records the regulations required you to keep, the IRS has a separate path to a penalty, and the clock for that path starts late. Keep your statements.

The Title 26 statute does not control

Because FBAR penalties sit in Title 31, a consent to extend the statute of limitations on your income tax return does not extend the FBAR statute. IRM 4.26.17.3.1.3 says so directly: a consent to extend the statute for the Title 26 examination will not extend the statute on the FBAR examination.

The FBAR statute can be extended, but only by a separate agreement. The manual describes a specific FBAR consent form, and directs examiners to solicit one when less than 180 days remain on the FBAR assessment statute. If you are asked to sign one, understand what you are agreeing to. Sometimes extending is in your interest, because it gives time for Appeals to consider the case. Sometimes it is not.

Two years to sue, and collection after that

Assessment is not the end of the road. Under 31 U.S.C. 5321(b)(2), the government may commence a civil action to recover an assessed FBAR penalty within two years beginning on the later of the date the penalty was assessed or the date any judgment becomes final in a related criminal action under 31 U.S.C. 5322.

IRM 4.26.17.3.1.3 also notes the IRS position that there is no statute of limitations on the collection of assessed FBAR penalties. The two-year window in the statute is about filing a lawsuit to recover the penalty. Read the two together, and do not assume an assessed FBAR penalty simply expires.

Who collects FBAR penalties

This surprises people who are used to dealing with the IRS on tax debts. FBAR penalties are not collected through the normal IRS collection machinery. IRM 4.26.17 describes the process: after assessment, if the penalty is not paid, a notice and demand letter, Letter 3708, is issued with interest at the rate published by the Bureau of the Fiscal Service. If it is not paid within 45 days, the case is referred to the Bureau of the Fiscal Service for collection. The manual states that all collection activity for FBAR penalties is handled by the Bureau of the Fiscal Service and the Department of Justice, not by the IRS.

That means the tools you may know from IRS collection, such as an installment agreement, an offer in compromise or a Collection Due Process hearing under the tax code, do not map neatly onto an assessed FBAR penalty. The time to fight is before assessment.

Before assessment: where the leverage is

When an examiner proposes FBAR penalties, IRM 4.26.17 calls for a report package that includes Letter 3709, the FBAR 30-day letter, and Form 13449, an agreement to assessment and collection of the penalties. That 30-day window is where you can ask for review by the IRS Independent Office of Appeals. The IRM's Appeals rules require substantial time left on the FBAR statute when a case reaches Appeals, which is why examiners often request a statute extension before sending a case there.

The IRM also notes that an FBAR penalty can be considered for Fast Track Settlement only if it has not yet been assessed.

How this interacts with compliance programs

One more practical point. If an examiner asks you to sign an FBAR statute extension, ask how much time is left on each year, which years the examiner is focused on, and whether Appeals review is contemplated. The answers tell you a lot about where the case is headed. A request to extend is not an accusation, and refusing is not always smart, but signing without understanding the dates is never smart.

The six-year FBAR period is why the IRS streamlined procedures ask for FBARs for the most recent six years for which the FBAR due date has passed. It lines up with how far back penalties can generally reach. See the Streamlined Foreign Offshore Procedures guide for the details.

Two cautions. First, the six-year rule is about civil penalties. Criminal exposure is a separate analysis. Second, the income tax side has its own extended statutes when foreign assets are involved. A missing Form 8938 or other international information return can keep the tax year open under 26 U.S.C. 6501(c)(8). See Form 8938 penalties and the statute of limitations.

Time is on your side only if nobody is looking. Once an examination opens, the most favorable programs close. If you have open years, let's talk about them while you still choose how they get resolved.