This document provides a specification for QR codes for mobile (instant) credit transfers (MCTs) whereby the payer uses a mobile device to initiate the payment transaction. The QR code is used to exchange data between the payer and the payee to enable the initiation of the (instant) credit transfer by the payer. This document is applicable to both cases where the QR code is presented by the payee or by the payer. This document excludes the following from its scope: The details of technical requirements and the supporting infrastructure to achieve interoperability amongst mobile (instant) credit transfer (MCT) service providers; The detailed implementation specification of the payload included in the QR code.