A money service bureau (MSB) is a business that provides financial services such as transmitting money, cashing checks, or exchanging currency. These are non-bank financial institutions that include a wide range of operations, from small check-cashing businesses to large money transmitters like wire services and prepaid access providers. MSBs are subject to strict anti-money laundering (AML) regulations and reporting requirements to prevent illicit financial activities. MSBs facilitate money movement and cash services, while PSPs facilitate electronic business transactions.