A money transmitter is a business or individual that accepts funds from one party and transmits them to another party or another location on that party’s behalf. In the U.S., FinCEN generally treats money transmitters as a type of Money Services Business (MSB), which can bring registration and anti-money laundering (AML) obligations.
How money transmission works
In practical terms, money transmission is about taking custody or control of value long enough to move it for someone else. Traditionally, this includes remittance providers, payment apps, and issuers of payment instruments like money orders or certain stored-value products. The defining feature is the service of transferring value for a customer, not merely providing software or communications.
Money transmitters in cryptocurrency
Crypto businesses can fall into money transmitter categories when they receive and send value on behalf of users. Examples include a custodial exchange that accepts customer deposits and sends withdrawals to external addresses, a hosted wallet provider that can move user funds, or a payment processor that collects crypto (or fiat) and forwards it to merchants. By contrast, many non-custodial wallet developers, where users hold their own private keys and the provider cannot move funds, are often viewed differently because they are not actually receiving and transmitting customer funds.
Licensing and compliance implications
Beyond FinCEN, U.S. money transmission frequently involves state-level money transmitter licensing, plus ongoing compliance such as customer identification practices, transaction monitoring, recordkeeping, and reporting of suspicious activity. These requirements shape how crypto products are built, where services can be offered, and which partners (banks, trust companies, licensed transmitters) are needed.
Understanding the money transmitter concept matters because it sits at the core of how regulators apply AML and consumer protection rules to crypto on-ramps, exchanges, and payment services.