CTR (Currency Transaction Report)

What Is a Currency Transaction Report?

A Currency Transaction Report (CTR) is a regulatory form (FinCEN Form 112) that financial institutions must file with the Financial Crimes Enforcement Network (FinCEN) whenever they handle a cash transaction exceeding $10,000 in a single business day. The filing captures details about the transaction and the individuals involved, creating a paper trail that law enforcement can use to detect money laundering, tax evasion, and other financial crimes.

CTRs are a cornerstone of the Bank Secrecy Act (BSA) framework, codified at 31 U.S.C. 5313 and implemented through 31 CFR 1010.311. Unlike Suspicious Activity Reports (SARs), which are triggered by suspicion of wrongdoing, CTRs are purely threshold-based: the dollar amount triggers the filing, not the nature of the transaction. Most CTRs involve entirely legitimate activity.

The $10,000 threshold was established in 1972 and has never been adjusted for inflation. A December 2024 GAO report (GAO-25-106500) found that the inflation-adjusted equivalent would be approximately $72,880, and that adjusting for inflation would have reduced CTR filings by at least 90% annually since 2014.

How It Works

CTR filing is triggered by any cash transaction (or series of related cash transactions by the same person) that exceeds $10,000 during a single business day. The process follows a specific sequence:

1. A customer conducts a cash transaction: a deposit, withdrawal, currency exchange, or purchase of monetary instruments (cashier's checks, money orders) with cash
2. The institution determines whether the transaction, alone or aggregated with other same-day cash transactions by that customer, exceeds $10,000
3. If the threshold is crossed, the institution collects required identification: full name, address, date of birth, Social Security number, and government-issued ID
4. The institution files FinCEN Form 112 electronically through the BSA E-Filing System within 15 calendar days of the transaction
5. The institution retains a copy of the CTR for five years

What Counts as Currency

Only physical cash triggers CTR requirements. This includes U.S. coins and paper bills, as well as foreign currency. The following do not count as "currency" for CTR purposes:

• Wire transfers and ACH payments
• Personal checks, cashier's checks, or money orders (unless purchased with cash)
• Debit or credit card transactions
• Cryptocurrency transfers (crypto-to-crypto)

The Aggregation Rule

Financial institutions must aggregate multiple cash transactions conducted by or on behalf of the same person during a single business day. If the combined total exceeds $10,000, a CTR is required even though no individual transaction crossed the threshold. For example, a $6,000 deposit at one branch in the morning and a $5,000 deposit at another branch in the afternoon totals $11,000, triggering a CTR.

Information Required on the CTR

FinCEN Form 112 captures comprehensive details about the transaction:

• Transaction type, amount, date, and associated account number
• Full identity of the person conducting the transaction: name, address, date of birth, taxpayer ID, and government-issued photo ID details
• Account owner information (if different from the person conducting the transaction)
• Institution details and the filing employee's information
• Notation of whether the filing represents aggregated transactions

Who Must File

CTR obligations apply to all entities classified as "financial institutions" under the BSA. This includes a broader range of businesses than many people realize:

• Banks, credit unions, and savings institutions (31 CFR Part 1020)
• Money services businesses (MSBs): money transmitters, currency exchangers, check cashers, and issuers of money orders (31 CFR Part 1022)
• Casinos and card clubs with annual gaming revenue exceeding $1 million (31 CFR Part 1021)
• Broker-dealers in securities (31 CFR Part 1023)
• Mutual funds (31 CFR Part 1024)
• Futures commission merchants and introducing brokers (31 CFR Part 1026)

Exemptions

Not every large cash transaction requires a CTR. The regulations provide two phases of exemptions (31 CFR 1020.315):

• Phase I (automatic): transactions by U.S. federal, state, and local government agencies, and by publicly traded companies listed on major exchanges like NYSE or NASDAQ
• Phase II (bank-designated): non-listed businesses and payroll customers may qualify if they have maintained an account for at least two months, conduct five or more transactions above $10,000 per year, and are organized in the U.S.

Exemptions require annual review and do not apply to businesses primarily acting as financial institutions, or to dealers in vehicles, vessels, aircraft, or farm equipment.

Structuring: The Anti-Evasion Rule

Structuring is the practice of deliberately breaking a large cash transaction into smaller amounts to stay below the $10,000 reporting threshold. Under 31 U.S.C. 5324, structuring is a federal crime regardless of whether the money itself is legally earned. The intent to evade the reporting requirement is the offense.

Common structuring patterns include depositing $9,500 on consecutive days instead of $19,000 at once, or sending multiple people to different branches to make sub-threshold deposits on the same day. Financial institutions train staff to recognize these patterns and file SARs when structuring is suspected.

Penalties

Structuring carries severe consequences:

Beyond criminal penalties, structured funds are subject to civil asset forfeiture, and institutions face regulatory sanctions including consent orders, monitorship, and license revocation.

CTRs and Cryptocurrency

The intersection of CTR requirements and cryptocurrency is nuanced. FinCEN classifies cryptocurrency exchanges, wallet providers, and crypto ATM (kiosk) operators as money transmitters under the MSB category, per guidance issued in 2013 (FIN-2013-G001) and clarified in 2019 (FIN-2019-G001). As registered MSBs, these businesses must comply with full BSA requirements, including KYC/AML programs and CTR filing.

The key distinction: CTRs are triggered specifically by physical currency (cash). A customer depositing $15,000 in cash at a Bitcoin ATM to purchase cryptocurrency triggers a CTR. A customer transferring $15,000 in Bitcoin to another wallet does not, because no physical currency changed hands. This creates an asymmetry that regulators have been working to address.

Regulatory Developments

In August 2025, FinCEN issued notice FIN-2025-NTC1 specifically addressing convertible virtual currency kiosks, reminding operators of their BSA obligations including CTR filing, SAR filing, AML program maintenance, and customer identification. The notice highlighted kiosk use in fraud schemes and illicit activity.

Proposed rulemaking from December 2020 would have extended CTR-like reporting to transactions involving convertible virtual currency or digital assets exceeding $10,000 when involving unhosted wallets. This proposed rule has not been finalized as of mid-2026, and its future remains uncertain. Separately, the STREAMLINE Act introduced in October 2025 proposes raising the CTR threshold from $10,000 to $30,000, with mandatory inflation adjustments every five years.

For digital payment networks and stablecoin platforms, CTR obligations depend on whether the transaction involves physical cash at any point. Stablecoin transfers settled entirely on-chain do not currently trigger CTR requirements, though they may be subject to other transaction monitoring obligations under the broader BSA framework.

Why It Matters

CTRs serve as one of the primary tools in the U.S. anti-money laundering infrastructure. Law enforcement agencies use CTR data to identify patterns of illicit cash movement, build cases against money laundering networks, and trace the financial flows behind drug trafficking, tax evasion, and terrorism financing. As detailed in broader analyses of fraud prevention in digital payments, transaction reporting forms a critical layer of the overall financial crime detection framework.

For businesses operating in digital payments and cryptocurrency, understanding CTR obligations is essential. Any service that touches physical cash: on-ramps, off-ramps, crypto ATMs, or currency exchange services: must implement systems to detect threshold-crossing transactions, collect required identification, and file reports within the 15-day window. Failure to do so carries both criminal and civil penalties, as demonstrated by enforcement actions like the $3.09 billion penalty assessed against TD Bank in 2024 for systemic BSA compliance failures.

The growing adoption of stablecoin payment rails and digital settlement networks shifts many transactions away from physical cash entirely, potentially reducing CTR exposure. However, the points where digital value converts to or from physical currency remain firmly within the CTR reporting regime, making compliance at these boundaries critical for any financial services platform.

Risks and Considerations

Compliance Burden

The unchanged $10,000 threshold captures a vast number of routine business transactions that posed no regulatory concern when the threshold was set in 1972. The GAO found that law enforcement accessed less than 3% of CTRs filed between 2014 and 2023, suggesting significant over-reporting. For smaller institutions and MSBs, the operational cost of collecting customer data, filing reports, and maintaining five-year records is substantial relative to the intelligence value generated.

Privacy Considerations

Each CTR captures detailed personal information: name, address, date of birth, Social Security number, and transaction details: for individuals conducting entirely legal transactions. The sheer volume of data collected (millions of CTRs annually) raises questions about the balance between law enforcement utility and financial privacy. Financial institutions are prohibited from notifying customers that a CTR has been filed (31 U.S.C. 5318(g)(2)).

Evolving Regulatory Landscape

The regulatory framework around CTRs continues to evolve. FinCEN has used Geographic Targeting Orders (GTOs) to temporarily lower reporting thresholds in specific regions: as low as $1,000 for MSBs in certain Southwest border counties. Proposed legislation like the STREAMLINE Act would raise the threshold to $30,000 with inflation indexing. For businesses building compliance programs, the potential for threshold changes in either direction requires flexible monitoring systems capable of adapting to new requirements.

This glossary entry is for informational purposes only and does not constitute financial or investment advice. Always do your own research before using any protocol or technology.