What Is An ISO?
The acronym ISO stands for independent sales organization. The merchant processing industry defines an ISO as a person or organization that is not a Visa or MasterCard member bank, but who has bank card relationships.
Depending on the information source, an ISO may be referred to as an MSP, which stands for member service provider. Both are one in the same.
This type of partnership can involve the following: acquiring or issuing functions, acquiring new customers, providing terminal purchases or leases, customer service, acquiring cardholders, and other various tasks.