GBC provides full e-commerce processing services, which include authorization, settlement, fraud screening and prevention, and chargeback processing. GBC also conducts regulatory and fiduciary due diligence, risk management, and compliance on merchants, and provides merchant incorporation, set up and banking services as a part of this service. Online merchant services are available to account holders whose business entities are International Business Corporations formed in Antigua and Barbuda.

It is GBC's policy not to acquire high-risk merchants, such as those in the gaming industry.