In linking mobile devices to facilitate a mobile commerce transaction, a primary mobile device creates an invitation to link to a mobile commerce account of the primary mobile device with a mobile commerce payment system and sends the invitation to a secondary mobile device. The secondary mobile device receives the invitation from the primary mobile device and sends an agreement to link to the mobile commerce account to the primary mobile device. The primary mobile device receives the agreement from the secondary mobile device and sends credentials for linking to the mobile commerce account to the secondary mobile device. The secondary mobile device receives the credentials from the primary mobile device and acquires information for enabling the link to the mobile commerce account using the credentials. The secondary mobile device links to the mobile commerce account using the information.