05/01/2026
What constitutes the high water mark of an account? The high water mark denotes the highest balance or value attained in an account at any point during a specific reporting period, typically a calendar year. Within the context of Foreign Bank Account Reporting (FBAR), the high water mark serves as a benchmark to ascertain the maximum amount of funds present in a foreign account. For FBAR purposes, the high water mark is utilized to calculate penalties for non-compliance. According to relevant guidelines, the penalty for willful non-filing can amount to up to 50% of the high water mark of the account. Consequently, if the account balance reached a peak of $100,000 during the reporting period, the penalty could amount to up to $50,000.
