BSA & money-services-business analysis
Analysis of how the Bank Secrecy Act's money-services-business definition applies to a cryptocurrency business, and what FinCEN registration follows if it does.
Anti-money-laundering and know-your-customer counsel for cryptocurrency businesses, covering Bank Secrecy Act and FinCEN obligations, OFAC sanctions screening, the Travel Rule, and the design of risk-based compliance programs that hold up under examination.
A digital-asset business becomes a money services business under the Bank Secrecy Act by what it does, not what it calls itself: if it accepts value from one person and transmits it to another, FinCEN has treated it as a money transmitter under guidance dating from 2013. The consequences are specific. Registration within 180 days of establishment, renewal every two years, and a written anti-money-laundering program whose absence is itself a violation.
The program has four required parts. Written policies and internal controls, a designated compliance officer and a training program come first; independent testing of all three completes it. Around it sit the clocks: a suspicious activity report within 30 days of detection, transmittal records from $3,000, and a blocked-property report to OFAC within ten business days of a sanctions hit.
We have advised digital-asset ventures on regulatory and structuring questions since 2014. Where a matter draws scrutiny we act for the business before FinCEN and the other agencies, and the first document they ask for is the written analysis of why the business registered, or why it did not.
Analysis of how the Bank Secrecy Act's money-services-business definition applies to a cryptocurrency business, and what FinCEN registration follows if it does.
Design of risk-based anti-money-laundering programs, with written policies and procedures, a designated compliance officer, training, and independent testing.
Know-your-customer onboarding, customer-identification procedures, risk tiering, and enhanced due diligence for higher-risk relationships.
Sanctions-screening frameworks and OFAC compliance, including counterparty screening, the blocking and rejecting of prohibited transactions, and program documentation.
Guidance on collecting and transmitting required originator and beneficiary information for qualifying transfers as the Travel Rule applies to digital assets.
Counsel on transaction-monitoring frameworks, suspicious-activity reporting, and the recordkeeping and reporting obligations that accompany them.
Review and independent testing of existing AML and KYC programs against current expectations, with remediation guidance where gaps appear.
Representation in regulatory examinations and matters before FinCEN and other authorities involving anti-money-laundering and sanctions questions.
FinCEN's 2013 guidance drew the line that still holds: a person who exchanges convertible virtual currency for currency or other value, or who issues and redeems it, is a money transmitter; a person who uses it to buy goods is not. Its 2019 guidance applied the same test to wallets, kiosks and decentralized applications.
Under the 2019 guidance a hosted wallet provider that holds the private keys and moves value on a customer's instruction is a money transmitter; a developer of software that lets users hold their own keys generally is not. Where a protocol's operators keep control of funds, the software exemption tends to fall away.
The money services business rule requires written policies and internal controls, a designated compliance officer and training, plus independent testing by someone who does not run the program. The risk assessment is not named in the rule, but it is the first thing an examiner reads, and a program without one is argued from memory.
The customer-identification rule binds banks and broker-dealers, not money services businesses. An exchange's know-your-customer duty comes from the program rule and the recordkeeping rule, which for a transmittal of $3,000 or more requires the sender's name, address and account, and identity verification for a sender without one. Tiering above that floor is the business's design.
OFAC does not require intent. A transfer to a wallet address on the SDN list, or to an entity owned 50 percent or more by listed persons, is a violation, so screening runs before the transaction and against addresses as well as names. Blocked property is reported within ten business days and again each September.
For transmittals of $3,000 or more the sending exchange passes the originator's and beneficiary's details to the next institution. FinCEN proposed in 2020 to lower the threshold to $250 for cross-border transfers and never finalized it, so $3,000 stands; the Financial Action Task Force recommends $1,000. A business in both builds to the lower number.
The GENIUS Act, signed in July 2025, treats permitted payment stablecoin issuers as financial institutions under the Bank Secrecy Act, with program, sanctions and reporting duties of their own. State money transmitter licenses still apply to exchanges, every state but one requires some form of them, and New York has required its BitLicense since 2015.
We map what the venture does with value, whether custody, exchange, or transmission, against FinCEN's money-services-business definition under the Bank Secrecy Act. If the BSA reaches it, registration follows within the statutory window. If it does not, we document why, because that memo is the first thing an examiner asks for.
A written risk assessment across products, customers, geographies, and channels becomes the spine of the program: policies and procedures, a designated compliance officer, training, KYC onboarding tiers, OFAC screening logic, and Travel Rule data flows built into the transfer systems themselves.
The program goes live. Transaction monitoring is tuned to on-chain activity, enhanced diligence is applied to the relationships that warrant it, suspicious-activity reports are filed on the BSA's clock, and blocked property is handled when a screen hits a sanctions list.
Independent testing probes the program before a regulator does, so that gaps become documented remediation before they become findings. When an examination or inquiry arrives, we speak for the business in front of FinCEN and other authorities, with accurate disclosure, sound records, and a defensible file.
An AML program is judged on the day someone tries to abuse it, so we build for that day.
It can, and for an exchange it usually does. FinCEN's 2013 guidance classified exchangers and administrators of convertible virtual currency as money transmitters, and its 2019 guidance applied that test to hosted wallets, kiosks and other models. A business that qualifies registers with FinCEN within 180 days of establishment and renews every two years, maintains a written program under a designated compliance officer, and files suspicious activity reports on suspect transactions of $2,000 or more. A business that does not qualify, because its users hold their own keys or it only develops software, should have a written analysis saying so, because that memorandum is the first thing an examiner asks to see.
Less than most founders expect in the rule and more in practice. The Bank Secrecy Act's customer-identification and beneficial-ownership rules apply to banks, broker-dealers and a few other covered institutions, not to money services businesses. An exchange's duty comes from the program rule, which requires controls reasonably designed to know who its customers are, and from the recordkeeping rule at $3,000. A workable program verifies identity at onboarding against a document and a database, assigns each customer a risk tier based on geography, volume and source of funds, and applies enhanced diligence to the top tier. Re-screening follows as behavior changes. Examiners test whether the tiers were applied, not whether they were written.
The Travel Rule is the part of FinCEN's recordkeeping regulation that requires a financial institution sending a transmittal of $3,000 or more to pass the originator's name, address and account information, and the beneficiary's details, to the next institution in the chain. It was written for wires in 1995 and applies to convertible virtual currency transfers between money services businesses. FinCEN proposed in 2020 to lower the threshold to $250 for transfers that cross the border and never finalized the rule, so $3,000 remains the US figure; the Financial Action Task Force recommends $1,000 and many jurisdictions have adopted it. The practical problem is that a blockchain carries no field for the data, so compliant exchanges pass it through separate messaging protocols, and a transfer to an unhosted wallet raises collection questions the rule does not answer.
Fully, and without a knowledge requirement. OFAC's prohibitions apply to US persons wherever the value moves, and civil liability is strict, so a transfer to a wallet address or an entity on the Specially Designated Nationals list is a violation whether or not anyone noticed. OFAC has added digital currency addresses to that list since 2018, and its 50 percent rule extends the block to any entity owned half or more by listed persons. A digital-asset business therefore screens names, addresses and counterparties before execution, blocks or rejects what hits, and reports blocked property to OFAC within ten business days and again each September. The sanctions program is documented separately from the anti-money-laundering program it sits beside.
The money services business rule names four parts. Written policies, procedures and internal controls come first, then a designated compliance officer with authority to act and a training program for the people who touch transactions. Independent testing by someone who does not run the program completes it. The risk assessment is not listed, but every examiner starts with it, because it is what makes the program risk-based rather than copied. For a digital-asset business the assessment covers the products and whether value can leave the platform, the customers and their jurisdictions, and the channels, including any exposure to mixers or unhosted wallets. Suspicious activity reports go to FinCEN within 30 days of detection, with a further 30 to identify a suspect, and every record is kept five years.
Hart David Carson LLP advises digital-asset businesses on building and documenting their compliance programs, and we represent clients in matters before regulators, including FinCEN and other authorities, on anti-money-laundering and sanctions questions. We act for the business in front of the agency, never for the agency itself, and we focus on accurate disclosure, sound documentation, and a defensible record.
Federal and state cryptocurrency regulation, compliance programs, and risk management across the digital-asset space.
Explore →Entity formation and structuring that can carry money-services, sanctions, and other regulatory obligations.
Explore →Securities-regulation counsel on token classification, registration and exemptions, disclosure, and matters before the SEC.
Explore →Derivatives and CFTC compliance for cryptocurrency futures and options markets and their institutional participants.
Explore →← Back to all Digital Assets practices
Reviewed by Jonathan D. Herpy, Sr., Senior Partner · Last updated October 2026 · Educational overview · Not legal advice
Bring us the registration question, the program design, a sanctions screen, the Travel Rule, or a matter already before a regulator. One partner is accountable for the whole of it, and you have that partner's direct line. Chicago, London, and Dubai work to the same standard.