An examiner testing a bank's cash reporting will want a list: every business day on which one customer's cash in, or cash out, passed $10,000 across all branches, and the CTR filed for each. That list is built from the same data a transaction monitoring program reads.
What is a currency transaction report, and what does CTR stand for in banking?
CTR stands for currency transaction report. That is the full form FinCEN uses in US banking. Under 31 CFR 1010.311, a financial institution other than a casino reports each deposit, withdrawal, exchange of currency or other payment or transfer that "involves a transaction in currency of more than $10,000".
Congress created the reports in 1970 because they have "a high degree of usefulness in criminal, tax, and regulatory investigations and proceedings", as its 2001 findings put it (note to 31 U.S.C. 5313). That law, the Bank Secrecy Act (BSA), still anchors the anti money laundering (AML) rules in the United States.
FinCEN received 21.5 million CTRs in fiscal year 2025, and of the IRS Criminal Investigation cases opened from a BSA filing that year, 9.2 percent started with a CTR (FinCEN Year in Review FY 2025, pp. 9 and 10).
What does CTR mean in Indian banking?
The CTR meaning in Indian banking differs. There it is the report of cash transactions that reporting entities send to India's financial intelligence unit, covering what rule 3 of the PMLA Rules, 2005 lists: cash transactions "of the value of more than ten lakh rupees", and connected series whose "monthly aggregate exceeds" that amount. The report is due "by the 15th day of the succeeding month" (the FIU's FAQ).
What is the $10,000 rule, and how are deposits added up?
FinCEN's own example: Tom Doe deposits $6,000 in the morning and another $5,000 later the same business day. Together that is $11,000, so the bank files one CTR and checks the "Multiple transactions" box (FinCEN CTR FAQ, question 18).
The rule behind it is 31 CFR 1010.313. All domestic branches count as one institution, and cash transactions count as one when the bank "has knowledge that they are by or on behalf of any person" and they total more than $10,000 "during any one business day". FinCEN adds that "debits must be added to debits, and credits must be added to credits" (question 17), so cash in and cash out are never netted. Night, weekend and holiday deposits count on the next business day.
Ufuk Gürdaş, the reviewer of this entry, on thresholds across a border: "A cash deposit of exactly $10,000 needs no CTR in the United States on its own, because 31 CFR 1010.311 starts at more than $10,000, while 10,000 Canadian dollars in cash needs a Large Cash Transaction Report, because FINTRAC's line is $10,000 or more. A group that copies one country's threshold into the other's rules files too many reports or too few." (FINTRAC, 19 January 2024)
Which transactions are reported under a CTR?
Only currency counts: coin and paper money designated as legal tender (31 CFR 1010.100(m)). Cash deposits, withdrawals and exchanges are reported, and so is a monetary instrument bought with $15,000 in cash (question 30). Wires and checks are not currency.
Who files a CTR, on which form, and by when?
Institutions required to file include banks, broker dealers in securities, money services businesses (MSBs), telegraph companies, futures commission merchants and introducing brokers in commodities (1010.100(t)). Casinos and card clubs with gaming revenue "in excess of $1 million" a year file under their own rule.
The filing requirements sit in 31 CFR 1010.306: file "within 15 days following the day on which the reportable transaction occurred" and keep a copy for five years. FinCEN counts calendar days and takes the form, the FinCEN CTR (Form 112), through the BSA E-Filing System (questions 12 and 13).
Under 31 U.S.C. 5326 the Treasury can also issue a geographic targeting order (GTO) that makes businesses in one area report transactions at or above an amount it sets.
Which customers are exempt from CTRs?
31 CFR 1020.315 lets a bank skip CTRs on transactions with exempt persons: other banks, government bodies, companies listed on the New York Stock Exchange, the American Stock Exchange or the NASDAQ National Market and their subsidiaries at least 51 percent owned, and non listed businesses and payroll customers, usually after two months with an account. Except for banks and government bodies, each is designated on FinCEN Form 110 within 30 calendar days and reviewed yearly.
CTR, SAR or Form 8300: what are the key differences?
Table 1. Three US cash and suspicion reports compared.
| Report | What triggers it | Threshold | Who files | Deadline | Rule |
|---|---|---|---|---|---|
| Currency transaction report (CTR) | Cash in or cash out above the line; no suspicion needed | More than $10,000 per person per business day | Banks, MSBs, broker dealers, casinos and other financial institutions | 15 days | 31 CFR 1010.311 and 1010.313 |
| Suspicious activity report (SAR) | The bank knows or suspects funds from crime, evasion of the BSA, or no apparent lawful purpose | Involves or aggregates at least $5,000 (banks) | The bank | 30 calendar days after initial detection | 31 CFR 1020.320 |
| Form 8300 | Currency received in a trade or business | More than $10,000 in one or related transactions | The business that receives it | 15 days after receipt | 31 CFR 1010.330 |
The amount alone triggers a CTR; a SAR rests on the bank's judgment. The CTR rules set no duty to tell the customer, while a SAR and anything that would reveal it stay confidential (1020.320(e)). A Form 8300 comes from the seller, a car dealer for example; FinCEN received 420,400 in fiscal year 2025, against 4.8 million SARs (Year in Review, p. 10). One cash deposit can lead to both a CTR and a SAR.
What are the consequences of failing to file a CTR?
Willful failure carries civil and criminal penalties. The civil penalty under 31 U.S.C. 5321(a)(1) is up to the greater of the amount involved, capped at $286,184, or $71,545, for penalties assessed from 17 January 2025 (31 CFR 1010.821).
The criminal penalty in 31 U.S.C. 5322 is a fine of up to $250,000, up to five years in prison, or both. It rises to $500,000, 10 years, or both when the violation comes while breaking another US law or as part of a pattern of illegal activity involving more than $100,000 in 12 months.
Is splitting cash to avoid a CTR a crime?
Picture a customer who deposits $9,500 in cash at each of three branches on one Tuesday (illustrative). The branches count as one bank, so the day's $28,500 needs a CTR. Splitting cash on purpose is a separate crime: 31 U.S.C. 5324(a)(3) bars structuring a transaction "for the purpose of evading" the report, with up to five years in prison, or 10 in aggravated cases, and a fine.
Cash rules catch the pattern by totaling each customer's cash per business day across branches. In the transaction monitoring software of complead, formerly Sanction Scanner, such a rule is built without code and backtested on 30, 60 or 90 days of history, and an analyst decides whether a hit becomes a SAR.
With cash in and cash out totaled separately per person and business day, the examiner's list of days becomes a single query, and every day over $10,000 should match a CTR filed within 15 days.
Related terms
- Suspicious activity report. The report a bank files when it suspects crime or evasion.
- Structuring. Splitting cash to stay under a reporting line.
- Smurfing. Structuring spread across several people.
- Money mule. Someone who moves money for another.
- Geographic targeting order. A Treasury order that adds reporting for businesses in one area.
- Know your transaction (KYT). Checking each transaction against the customer's profile.
