Financial Crimes Enforcement Network

The Financial Crimes Enforcement Network (FinCEN) is a bureau of the U.S. Department of the Treasury that administers and enforces the Bank Secrecy Act and serves as the United States’ financial intelligence unit. It collects, analyzes and disseminates financial information to combat money laundering, terrorist financing, sanctions evasion and other illicit finance risks.^[1][6]

Role in the U.S. financial system

FinCEN sits at the intersection of financial regulation, law enforcement and national security. Unlike prudential bank regulators, it does not focus primarily on capital adequacy, bank safety and soundness, or consumer protection. Its central function is to make the formal financial system more resistant to abuse by criminals, terrorist financiers, corrupt officials, fraud networks and other illicit actors.

FinCEN describes its mission as receiving and maintaining financial-transaction data, analyzing and disseminating that data for law-enforcement purposes, and building cooperation with foreign counterpart organizations and international bodies.^[1] In a 2024 congressional testimony, FinCEN’s director described the bureau as both the primary U.S. regulator responsible for implementing the Bank Secrecy Act and the financial intelligence unit of the United States.^[6]

The agency’s work affects banks, broker-dealers, money services businesses, casinos, mutual funds, certain insurance companies, operators in the virtual-currency sector, and other businesses covered by Bank Secrecy Act regulations. Its rules and guidance also influence the compliance programs of large diversified financial groups such as JPMorgan Chase, payments companies, securities firms and non-bank financial intermediaries.

FinCEN’s role is distinct from, but closely connected to, the roles of the Office of the Comptroller of the Currency, the Federal Deposit Insurance Corporation, the Board of Governors of the Federal Reserve System, the U.S. Securities and Exchange Commission and the Commodity Futures Trading Commission. Those agencies supervise different categories of financial institutions or markets, while FinCEN administers the principal federal anti-money-laundering and countering-the-financing-of-terrorism framework.

Legal basis and delegation of authority

FinCEN’s main legal foundation is the Currency and Foreign Transactions Reporting Act of 1970 and related amendments, collectively known as the Bank Secrecy Act (BSA).^[1][2] The BSA authorizes the Treasury Department to impose reporting, recordkeeping and program requirements on financial institutions and other covered businesses in order to detect and prevent money laundering and related crimes.^[2]

FinCEN states that the BSA is the United States’ first and most comprehensive federal anti-money-laundering and counter-terrorism-financing statute.^[1] The statute authorizes requirements for covered institutions to maintain anti-money-laundering programs and file reports that are useful in criminal, tax, regulatory, intelligence and counter-terrorism matters.^[1]

Treasury has delegated to the director of FinCEN the authority to implement, administer and enforce compliance with the BSA and associated regulations.^[1] FinCEN’s legal-authorities page also identifies Treasury Order 180-01 as the delegation describing the bureau’s responsibilities for BSA implementation, administration and enforcement.^[2]

The BSA framework has been amended repeatedly. The USA PATRIOT Act of 2001 expanded anti-money-laundering authorities after the September 11 terrorist attacks, including measures aimed at terrorist financing and enhanced due diligence.^[2] The Anti-Money Laundering Act of 2020 and the Corporate Transparency Act, enacted as part of the fiscal year 2021 National Defense Authorization Act on January 1, 2021, introduced significant reforms to the U.S. anti-money-laundering regime.^[2]

Bank Secrecy Act reports and records

FinCEN’s best-known function is the administration of BSA reporting and recordkeeping rules. These rules are designed to produce financial intelligence that can be used by law enforcement, tax authorities, regulators and national-security agencies.

The BSA requires financial institutions, among other things, to keep records of cash purchases of negotiable instruments, file reports of cash transactions exceeding $10,000 in daily aggregate amount, and report suspicious activity that may indicate money laundering, tax evasion or other criminal conduct.^[2] The Internal Revenue Service describes the BSA as one of the first U.S. laws to fight money laundering and states that it requires businesses to keep records and file reports that are useful in criminal, tax, regulatory, intelligence and counterintelligence matters.^[5]

Two core BSA reports are Currency Transaction Reports (CTRs) and Suspicious Activity Reports (SARs). CTRs generally document cash transactions above specified thresholds, while SARs are filed when a covered institution detects activity that may involve money laundering, terrorist financing, fraud or other suspicious conduct. FinCEN does not prosecute crimes directly; instead, it collects and organizes information that can support investigations by other authorities.

The BSA also contains rules concerning cross-border currency transportation. The IRS states that a Currency and Monetary Instruments Report must be filed when a person transports, mails, ships, causes to be transported, mailed or shipped, or receives currency or monetary instruments in an aggregate amount exceeding $10,000 into or out of the United States.^[5]

Regulatory and supervisory functions

FinCEN issues regulations, interpretive guidance, administrative rulings, advisories, notices and enforcement actions. Its regulations are codified in 31 CFR Chapter X, after a 2011 transfer of BSA regulations from 31 CFR Part 103.^[2]

The agency’s regulatory activity covers multiple types of financial institutions. For example, banks and other covered firms are required to maintain anti-money-laundering and countering-the-financing-of-terrorism (AML/CFT) programs. FinCEN’s 2026 fact sheet on a proposed AML/CFT program rule stated that the BSA requires financial institutions to establish AML/CFT programs and that the proposal was designed to modernize the regulatory and supervisory framework around effectiveness, risk-based allocation of resources and the purposes of the BSA.^[4]

The 2026 proposal identified four core program pillars: internal policies, procedures and controls, including risk assessment processes and, where applicable, ongoing customer due diligence; independent program testing; designation of a U.S.-based compliance officer; and ongoing employee training.^[4] FinCEN also stated that the proposal would incorporate AML/CFT priorities into program requirements and reflect statutory changes made by the Anti-Money Laundering Act of 2020.^[4]

Supervision is shared across the U.S. regulatory system. Federal banking agencies and other functional regulators examine institutions under their jurisdiction, while FinCEN administers and enforces the BSA framework. FinCEN’s 2026 proposal emphasized the bureau’s central role in AML/CFT supervision and described a notice-and-consultation framework with federal banking supervisors for significant AML/CFT supervisory actions.^[4]

Financial intelligence function

As the U.S. financial intelligence unit, FinCEN receives a large volume of reports from the private sector and turns them into usable intelligence. It analyzes BSA filings, identifies patterns, supports domestic and international investigations, and shares information with authorized government users.

FinCEN has described its analytical work as covering trends and typologies in BSA data, including ransomware, identity-related fraud, business email compromise in the real-estate sector, illegal wildlife trafficking, Russian oligarch financial activity and evasion of Russia-related export controls.^[6] The Anti-Money Laundering Act page also states that FinCEN periodically publishes threat-pattern and trend information derived from BSA filings to highlight the value of information filed by financial institutions.^[3]

The bureau’s financial-intelligence role depends on the quality and timeliness of private-sector reporting. A suspicious activity report from a bank or money-services business may not by itself prove a crime, but it can provide leads, connections, account information, transaction patterns and counterparties that investigators can compare with other evidence.

Corporate Transparency Act and beneficial ownership

The Corporate Transparency Act (CTA), enacted within the Anti-Money Laundering Act framework, gave FinCEN a major role in beneficial-ownership reporting. Beneficial-ownership information is intended to identify the natural persons who own or control legal entities, reducing the ability of illicit actors to hide behind shell companies.

FinCEN issued a beneficial-ownership reporting rule in September 2022 and an access-and-safeguards rule in December 2023.^[3][7] The access-and-safeguards rule prescribed the circumstances under which beneficial-ownership information reported to FinCEN could be disclosed to authorized recipients and how the information must be protected.^[7]

The rule identified categories of authorized recipients, including federal agencies engaged in national-security, intelligence or law-enforcement activity; state, local and tribal law-enforcement agencies with court authorization; certain foreign law-enforcement and judicial authorities; financial institutions with customer-due-diligence requirements and their regulators; and Treasury personnel.^[7]

The CTA framework has been subject to significant rule changes and litigation. FinCEN’s AML Act page lists subsequent beneficial-ownership reporting rule revisions, including a final rule dated August 11, 2026, and earlier 2025 changes.^[3] As of the latest materials cited here, the scope of beneficial-ownership reporting had shifted materially from the original reporting framework, including exemptions for U.S.-created entities and their beneficial owners described in FinCEN materials.^[7]

Beneficial ownership also connects to customer due diligence. FinCEN’s director testified in 2024 that the agency had issued a customer-due-diligence rule in 2016, before Congress passed the CTA, and that the rule required certain financial institutions, such as banks, to identify beneficial owners of legal-entity customers.^[6]

AML/CFT priorities and modernization

The Anti-Money Laundering Act of 2020 required FinCEN to establish public, government-wide AML/CFT priorities and to issue regulations incorporating those priorities into revised program requirements.^[4] FinCEN’s AML Act page identifies AML/CFT priorities issued on June 30, 2021, as part of the bureau’s implementation of the statute.^[3]

The purpose of the priorities is to focus the financial system on the most important illicit-finance risks facing the United States. FinCEN’s director testified that priorities were intended to help financial institutions make better use of resources to stop financial crimes and to strengthen feedback between institutions and regulators.^[6]

Modernization has also involved reconsidering how AML/CFT programs are supervised. FinCEN’s 2026 proposed rule emphasized risk-based programs, effectiveness, and allocation of resources toward higher-risk customers and activities rather than lower-risk customers and activities.^[4] It also sought to distinguish between weaknesses in program design and weaknesses in day-to-day program maintenance.^[4]

Enforcement

FinCEN can bring civil enforcement actions for violations of the BSA and related regulations. Enforcement may involve civil money penalties, remedial undertakings and coordination with other regulators or law-enforcement agencies. In the banking sector, BSA enforcement can also involve federal banking supervisors, depending on the charter and regulator of the institution.

Enforcement is not limited to banks. Money services businesses, casinos, virtual-asset firms and other covered entities may be subject to FinCEN registration, reporting or program obligations. The BSA’s reach reflects the policy judgment that illicit finance can move through both traditional banks and non-bank channels.

FinCEN’s enforcement role is separate from criminal prosecution. Criminal cases are brought by the Department of Justice, while FinCEN’s role is administrative and regulatory. However, the same underlying facts may lead to parallel regulatory, civil and criminal actions.

Relationship with other regulators and institutions

FinCEN works with domestic regulators, law-enforcement agencies, intelligence agencies and foreign financial intelligence units. In banking, its rules are implemented alongside supervision by agencies such as the Office of the Comptroller of the Currency, Federal Deposit Insurance Corporation and Board of Governors of the Federal Reserve System.

In securities and derivatives markets, FinCEN’s AML/CFT framework overlaps with institutions regulated by the U.S. Securities and Exchange Commission, the Commodity Futures Trading Commission, exchanges such as the New York Stock Exchange and Nasdaq Stock Market, and clearing and settlement organizations such as Depository Trust & Clearing Corporation.

Internationally, FinCEN cooperates with counterpart financial intelligence units and participates in broader efforts to combat cross-border illicit finance. Its international function reflects the fact that money laundering, sanctions evasion, cybercrime and terrorism financing commonly involve transactions, entities and intermediaries across multiple jurisdictions.

Significance

FinCEN is central to the United States’ anti-money-laundering architecture because it defines many of the rules that determine how financial institutions identify customers, monitor transactions, report suspicious conduct and maintain compliance programs. Its databases and analytical products convert private-sector compliance activity into financial intelligence that can support investigations and national-security actions.

The agency is also significant because its rules impose operational obligations and compliance costs on financial institutions. Banks and other covered firms must design systems, hire compliance personnel, train staff, conduct monitoring, file required reports and respond to regulatory changes. These obligations are intended to protect the financial system, but they also require continuing calibration between regulatory burden, financial inclusion, law-enforcement usefulness and national-security priorities.

FinCEN’s importance has grown as illicit finance risks have evolved from traditional cash-based money laundering to include cybercrime, ransomware, digital assets, trade-based money laundering, proliferation finance, kleptocracy and complex transnational fraud. Its continuing challenge is to collect information that is useful to government users while keeping compliance requirements risk-based and proportionate for the private sector.