What are the penalties for not filing FBAR?

The penalties for failing to file FBAR are among the most severe in the US tax system, and they can be applied per account, per year, making the potential exposure enormous for taxpayers with multiple foreign accounts over several years.

For non-willful violations — where the failure to file was due to negligence or genuine ignorance of the requirement — the penalty is up to $16,536 per violation (adjusted annually for inflation). A violation can be assessed per unreported account per year, so if you have 3 unreported accounts over 5 years, the theoretical maximum non-willful penalty could reach $247,000 or more.

For willful violations — where the taxpayer knew about the requirement and intentionally failed to comply — the penalties escalate dramatically. The penalty is the greater of $165,353 per violation or 50% of the highest balance in the unreported account at the time of the violation. Additionally, willful failure to file FBAR is a federal crime that can result in criminal prosecution, with fines up to $500,000 and imprisonment of up to 10 years.

The IRS determines willfulness based on the totality of circumstances. Factors that suggest willfulness include using foreign accounts to hide income, lying to tax preparers about foreign accounts, using nominees or shell entities to conceal account ownership, and taking active steps to evade detection. Simply having a large balance abroad is not evidence of willfulness.

In practice, the IRS has some discretion in penalty assessment. For minor, clearly non-willful violations, the IRS may assess reduced penalties or issue a warning letter. The IRS Internal Revenue Manual provides guidance on mitigation, and examiners can consider reasonable cause arguments.

The best way to address missed FBARs is through the IRS Streamlined Filing Compliance Procedures, which waive all FBAR penalties for qualifying foreign-resident taxpayers. For US-based taxpayers, the Streamlined Domestic Offshore Procedures impose a 5% miscellaneous offshore penalty. Taking proactive steps to come into compliance before the IRS contacts you is always better than waiting.