Abstract: A system and method for making payments using an application installed on a mobile device, which has access to at least one source of funds. Said application interacts with a Point of Sale (POS) terminal through an application server. The user “checks-in” from the mobile application into said application server and the POS terminal sends a verification request to said application server, where the user confirms payment for a purchase. An Electronic Funds Transfer processing and switching system requests authorization from an issuer for completing said payment and provides confirmation of the transaction being authorized to the application server. The application server then notifies the mobile application and the POS terminal that the transaction has been completed in order to update the transaction records. A receipt of the transaction details may be printed or sent by email to the user.