FBAR Direct prepares and files your FBAR (FinCEN Form 114) on your behalf. You are responsible for reviewing all information for accuracy before submission to FinCEN. This article is for informational purposes only and does not constitute tax, legal, or financial advice.

FBAR Reasonable Cause Defense: How to Eliminate Non-Willful Penalties

The FBAR reasonable cause defense can wipe out non-willful FBAR penalties. Under 31 USC 5321(a)(5)(B)(ii), the IRS must waive the FBAR penalty when a taxpayer shows reasonable cause for failing to file the Report of Foreign Bank and Financial Accounts — not willful neglect.

Expats and US persons who missed the FBAR filing deadline often did so for common reasons. Some relied on a CPA who never raised the issue. Others did not know about the Bank Secrecy Act's reporting requirements for non willful FBAR filers. Still others had recently become US persons with foreign bank accounts. These facts can form the basis of a strong argument. The burden falls on you to prove it.

This article explains what reasonable cause means for FBAR purposes, which factors the IRS and courts weigh, and how to present your case.

What Is the FBAR Reasonable Cause Defense?

The FBAR reasonable cause defense is a statutory shield under 31 USC 5321(a)(5)(B)(ii). It wipes out non-willful civil penalties — up to $16,117 per violation — when you show reasonable cause for the failure to timely file. The IRS applies this standard through IRM 4.26.16.4.4.

Revenue agents examine each case on its facts. The core question: did the taxpayer use ordinary business care and prudence? A good-faith effort to comply — even one that failed — carries far more weight than ignoring the duty.

Reasonable cause is not a free pass. If the facts show the taxpayer knew about the FBAR or had access to info that should have prompted inquiry, the defense will fail.

The Statutory Language: 31 USC 5321(a)(5)(B)(ii)

The statute states: a civil penalty shall not apply if the person shows the violation was due to reasonable cause and not willful neglect. This section covers only the non-willful tier. It does not apply to willful violations under 31 USC 5321(a)(5)(C).

If the IRS classifies your case as willful, no reasonable cause defense applies. Willful FBAR penalties — civil and criminal fines — can reach $100,000 or 50% of the account balance, per account, per year.

How Reasonable Cause Differs from the Delinquent FBAR Submission Procedures

Both paths can result in zero penalties for failing to file an FBAR. The Delinquent FBAR Submission Procedures apply when you properly reported all foreign income on your tax returns and the IRS has not contacted you. Reasonable cause applies within an IRS audit — when a revenue agent reviews your foreign financial accounts and decides whether to assess a penalty. See our guide on FBAR delinquent filing procedures.

What Factors Does the IRS Consider for Reasonable Cause?

The IRS looks at five factors from IRM 4.26.16.4.4 and court rulings. These factors include reliance on expert advice, the complexity of FBAR rules, your education level, your compliance history, and whether you disclosed foreign income. No single factor controls the outcome. Revenue agents look at all the facts together.

Factor	How It Helps Your Case	How It Hurts Your Case
Reliance on professional advice	CPA or attorney failed to advise you, and you gave them all relevant records	You concealed foreign accounts from your advisor
Complexity of FBAR rules	Rules were unclear for your account type	Accounts were simple foreign bank accounts at known institutions
Education and sophistication	No finance, law, or tax background	Career in banking, accounting, or law
Prior compliance history	First-time FBAR filer with no prior violations	Past FBAR filings suggest you knew the rule existed
Disclosure of income	Reported all foreign interest income on your tax returns	Omitted foreign interest income — suggests awareness of accounts

The IRS will find reasonable cause when multiple factors align. A single strong factor — like reliance on a CPA who should have caught the duty — can also carry weight on its own. Courts in Jarnagin v. United States and Kimble v. United States have reviewed these factors in detail.

Ordinary Business Care and Prudence

This is the core standard. Did you take the steps a prudent person would take to meet your filing duties? The IRS looks at your education, your grasp of tax rules, and how complex your case was.

For example, an expat who inherited a foreign bank account and spoke limited English would likely meet this bar. This is true if their tax preparer never asked about foreign accounts. In contrast, a US-born CPA who opened a foreign account and never told their own preparer would not.

Complexity of the Reporting Duty

FBAR reporting rules can be complex. Foreign pension funds, mutual funds, and other financial accounts held in trust structures had shifting IRS guidance over many years. If your account type fell into an unclear category when you failed to file, that supports reasonable cause.

For simple checking or savings accounts, complexity is a weaker argument. The IRS expects taxpayers to find the filing duty through basic research or advice from a tax professional.

Does Reliance on a Tax Advisor Eliminate FBAR Penalties?

Reliance on a tax advisor can wipe out non-willful FBAR penalties — but you must meet three tests. First, the advisor must have been fit to advise on FBAR matters. A CPA who lacks international tax skills may not qualify. Second, you must have given the advisor all key info about your foreign accounts. Third, your reliance on their advice or silence must have been fair.

This three-part test comes from the broader federal tax reasonable cause framework. Courts and the Internal Revenue Service apply it to FBAR cases. If you meet all three, the IRS cannot impose a penalty for non willful violations under 31 USC 5321(a)(5)(B)(ii).

What "Competent Advisor" Means

A competent advisor for FBAR purposes is one who claims expertise in international tax reporting. The following types of advisors typically qualify:

CPAs who focus on international tax or expat returns
Tax attorneys who practice cross-border compliance
Enrolled agents with documented international tax experience

A CPA who files only domestic returns may not meet this standard — even if they never asked about foreign accounts or financial interest in accounts abroad. The IRS may argue that you should have sought a specialist once you knew about your foreign account.

What You Must Disclose to Your Advisor

Your reliance defense fails if you hid foreign accounts from your advisor. The IRS looks at whether you told your preparer these key facts:

That you held or had signature authority over foreign financial accounts
The approximate balances and countries involved
Whether you received income from those accounts

If you checked "No" on Schedule B's foreign account question while holding accounts abroad, you have a problem. Courts treat that checkbox as proof that you knew about the FBAR duty. Checking "No" when the answer is "Yes" will undermine any reasonable cause argument.

When Advisor Silence Counts as Reliance

Say your CPA prepared your returns. You told them about your foreign accounts. They never mentioned the FBAR. Their silence can count as reasonable cause — you relied on a professional to catch what they should have caught. This argument has won in IRS audits and in court.

The key proof is your records of contact with the advisor. Emails, organizer forms, and meeting notes that show you disclosed the accounts and got no FBAR guidance in return carry strong weight.

FBAR Direct can help you file your overdue FBARs while you prepare your reasonable cause statement. We handle the FinCEN Form 114 filing. You address the explanation separately.

What Case Law Says About Reasonable Cause?

Key court rulings shape how the FBAR reasonable cause defense works in practice. These cases show how federal courts apply the ordinary business care standard. They also reveal when advisor reliance is reasonable and when the IRS can reclassify a violation as willful.

United States v. Bittner (2023 — Supreme Court)

Bittner addressed how to count penalties for non-willful violations — not reasonable cause directly. But its outcome changes the stakes. The Supreme Court held 5-4 that non-willful penalties apply per annual FBAR report, not per account. A successful reasonable cause defense saves up to $16,117 per year. Over five years, that is up to $80,585. See FBAR penalties: what happens if you don't file.

Jarnagin v. United States (Court of Federal Claims)

Jarnagin is one of the most cited cases in FBAR reasonable cause disputes. The court looked at whether reliance on a tax professional supported the defense. It confirmed the three-part test: competent advisor, full disclosure, and fair reliance. It also held that the IRS must prove willfulness. The taxpayer must prove reasonable cause.

Kimble v. United States (Court of Federal Claims)

Kimble involved a taxpayer who argued they did not know about the FBAR. The court found that not knowing alone does not prove reasonable cause. You must also show you used ordinary care. Ignorance of the law helps only when a prudent person in your spot would not have known about the FBAR duty either.

The Willfulness Boundary: Why It Matters for Reasonable Cause

Reasonable cause only applies to non-willful FBAR violations. Courts use the Safeco v. Burr standard: knowing breach of a known legal duty, or reckless disregard. If the IRS can show reckless disregard — such as checking "No" on Schedule B while holding large foreign accounts — the defense is gone. See FBAR willful vs. non-willful penalties.

Realistic Scenarios: When Reasonable Cause Works and When It Fails

Scenario 1: Successful — Reliance on CPA

Maria, a software engineer, moved to the United States from Germany in 2018. She kept a Deutsche Bank savings account (peak $45,000). Each year, she gave her US-based CPA the German bank statements. The CPA never mentioned the FBAR or FinCEN Form 114.

In 2025, the IRS found the late FBARs for 2019 through 2024. The agent proposed $16,117 per year — $96,702 total.

Maria's attorney wrote a reasonable cause statement showing: (1) she disclosed the account by giving bank statements; (2) her CPA held himself out as her tax advisor; and (3) she had no background in US international tax law. The IRS waived all FBAR penalties under 31 USC 5321(a)(5)(B)(ii).

Scenario 2: Unsuccessful — Concealment and Schedule B

James, a retired banker, opened a Swiss account in 2010 to hold $300,000. Each year, his CPA asked about foreign accounts on the Schedule B organizer. James checked "No" each year and intentionally hid the Swiss account.

In 2024, the IRS found the account through FATCA data. The agent proposed willful penalties based on three facts: (1) James's finance career showed awareness of reporting rules; (2) his repeated "No" on Schedule B proved deliberate fraud; and (3) the large balance made forgetting implausible.

Because the IRS classified the violation as willful, no reasonable cause defense applied. The steep fines reached $100,000 per year under 31 USC 5321(a)(5)(C). The IRS referred James to the IRS Voluntary Disclosure Practice to avoid criminal penalties.

Scenario 3: Borderline — Unawareness With Some Due Diligence

Priya, a physician, moved from India in 2017. She had an NRE account at HDFC Bank (about $85,000). She used tax software and checked "No" to the foreign account question. She read "financial account" as meaning only brokerage accounts — not savings.

The IRS assessed non-willful penalties of $16,117 per year for 2018 through 2024 — $112,819 total. Priya's attorney argued reasonable cause based on: (1) genuine ambiguity between NRE accounts and "foreign financial accounts"; and (2) her lack of US tax knowledge.

The IRS partially accepted the argument. It waived penalties for the first two years but kept them for later years when guidance about NRE accounts had become public. The result was $80,585.

For taxpayers to avoid this outcome, the FBAR streamlined filing compliance procedures may offer a better path. The 5% penalty under Streamlined Domestic is often less costly than litigation risk.

How Do You Submit a Reasonable Cause Statement?

You present a reasonable cause defense in writing to the IRS examiner. There is no official form. The statement should be a signed letter — under penalty of perjury — that explains why your failure was not willful neglect.

State the basic facts — account names, countries, years not filed, balances
Describe what you knew at the time of each missed filing
Document your reliance on a tax advisor — name, credentials, what you disclosed
Attach proof — tax return transcripts, prior FBAR filings (if any), organizer forms, emails with your CPA
Cite the law — 31 USC 5321(a)(5)(B)(ii) and IRM 4.26.16.4.4
State your conclusion — how the facts meet the ordinary business care standard

A strong statement runs three to ten pages. Most taxpayers hire a tax attorney or CPA with FBAR experience to draft it.

The FBAR statute of limitations gives the IRS six years from the FBAR filing deadline to assess penalties. If your missed years are near that window, act promptly.

Let FBAR Direct Help You Get Current

Getting your FBAR filings current is the first step toward any reasonable cause defense. Do not argue reasonable cause while still refusing to file. Filing overdue FBARs through FinCEN's BSA E-Filing system — with a written explanation — shows good faith.

Let FBAR Direct prepare your filing for all missed years. We handle the FinCEN Form 114 and submit through BSA E-Filing. You focus on your reasonable cause statement with your tax advisor. See how it works.

Frequently Asked Questions About the FBAR Reasonable Cause Defense

Below are the most common questions taxpayers who face FBAR penalties ask about the reasonable cause defense, including what proof you need, how much you can save, and whether this path works better than the streamlined filing procedures.

What is the FBAR reasonable cause defense?

It is a protection under 31 USC 5321(a)(5)(B)(ii) that wipes out non-willful civil penalties when the taxpayer proves reasonable cause for the failure to file. The IRS applies the ordinary business care standard from IRM 4.26.16.4.4. This defense covers only non-willful violations.

Does reasonable cause apply to willful FBAR violations?

No. The waiver in 31 USC 5321(a)(5)(B)(ii) covers only non-willful penalties. Willful FBAR penalties are at least $100,000 or 50% of the account balance per account, per year. If the IRS classifies your case as willful, your only option is the IRS Voluntary Disclosure Practice.

Can I claim reasonable cause if I relied on a CPA who never told me about FBAR?

Yes, if you meet three conditions: your CPA had international tax expertise, you disclosed your foreign accounts to them, and your reliance was reasonable. Document what you told your CPA through organizer forms, emails, or meeting notes. If you concealed the accounts, the reliance defense will fail.

What documentation do I need for a reasonable cause statement?

Gather tax return transcripts showing you reported foreign income, prior FBAR filings, organizer forms from your CPA, email exchanges about foreign accounts, and any written advice. Describe what you knew at the time and how those facts meet the ordinary business care standard under IRM 4.26.16.4.4.

How much can reasonable cause save me?

After Bittner (2023), non-willful penalties apply per annual FBAR report — up to $16,117 per year under 31 USC 5321(a)(5)(B). A successful defense wipes out all those penalties. If you missed five years, that is up to $80,585 waived. If you also avoid a willful finding — where penalties can result in $100,000 or more per account, per year — the savings are far greater.

Is the reasonable cause defense better than the Streamlined Filing Procedures?

It depends on your facts. The FBAR streamlined filing compliance procedures charge a 5% offshore penalty under Streamlined Domestic, or zero under Streamlined Foreign. Reasonable cause, if it works, means zero penalty — but you must argue it in an IRS audit. Streamlined is a pre-audit path. If the IRS has not yet contacted you, Streamlined is the lower-risk option. Once an audit opens, reasonable cause becomes the main tool.

Let FBAR Direct File Your Overdue FBARs

A credible reasonable cause defense requires you to file before or during the audit. The sooner you file, the stronger your case. Filing late FBARs through FinCEN shows the IRS that you take your duties seriously.

Start your FBAR filing today with FBAR Direct. We prepare all missed years, apply Treasury Department exchange rates, and file through BSA E-Filing on your behalf. You review and approve every detail before we submit. See how it works.

Tax rules change often. Always verify current requirements at IRS.gov or FinCEN.gov. Consult a qualified tax professional for advice on your situation. This article is current as of March 13, 2026.