CMP is a scheme that reimburses landlords and tenants should a letting agent misappropriate their rent, deposit or other client funds. It has long been a requirement for ARLA Propertymark members to have CMP and has been a legal requirement for all letting agents since 1 April 2019.

CMP is mandatory for every company that acts as an agency in property, which handles client money or uses a third party to oversee client money.