The $10,000 threshold applies to aggregated daily transactions by the same person - not individual transactions

Currency Transaction Reports are required for every cash transaction - or series of related transactions - that exceeds $10,000 in a single business day. The filing obligation is straightforward in principle but generates a surprising number of errors in practice. CTR filing mistakes are among the most common findings in BSA examinations, and they range from minor technical errors to substantive failures that suggest a program that isn't being actively managed.

CTRs must identify the person on whose behalf the transaction is conducted, not just the conductor

Mistake #1: Failing to aggregate related transactions. The $10,000 threshold applies to the aggregate of all cash transactions conducted by or on behalf of the same person in a single business day. If a customer makes three separate cash deposits of $4,000 each on the same day, a CTR is required even though no single transaction exceeded the threshold. Businesses that track transactions individually rather than aggregating by customer and day are systematically under-filing.

The 15-day filing deadline is strict - monthly batch filing is systematically late

Mistake #2: Incorrect beneficial owner identification. The CTR must identify the person on whose behalf the transaction is conducted - not just the person who physically conducts it. When a business employee deposits cash on behalf of the business, the CTR must identify the business as the entity on whose behalf the transaction is conducted, and must identify the individual who conducted the transaction. Getting this distinction wrong is a common technical error that examiners flag.

CTR information must be accurate - errors in amounts, dates, or transaction types are examination findings

Mistake #3: Missing the 15-day filing deadline. CTRs must be filed within 15 calendar days of the transaction. Missing this deadline is a separate compliance failure from the underlying transaction. Businesses that batch their CTR filings monthly are systematically late. Build a CTR filing process that identifies reportable transactions daily and files within the required window.

CTR filing and SAR filing are independent obligations - a suspicious large cash transaction requires both

Mistake #4: Incomplete or inaccurate transaction information. CTRs require specific information about the transaction: the amount, the type of transaction, the date, and the location. Errors in this information - wrong amounts, wrong dates, missing transaction types - are technical violations that examiners flag. Review your CTR filings for accuracy before submission, and maintain a log of filed CTRs for internal quality control.

Mistake #5: Treating CTR filing as a substitute for SAR filing. A CTR is a reporting obligation for large cash transactions - it is not a substitute for a SAR when the transaction is suspicious. A $15,000 cash deposit that is suspicious requires both a CTR and a SAR. Many businesses file the CTR and consider their obligation satisfied. The two filing obligations are independent and must both be met when both thresholds are triggered.