Providing for a mobile communication device (MCD) credit account and credit transactions by way of such an MCD is described herein. As an example, a credit account sponsored by a financial or commercial entity can be associated with a unique ID of an MCD. The MCD can interface with another electronic device and initiate credit transactions, such as commercial purchases, credit transfers, currency conversions, and the like, via the interface. Further, rules provided by the sponsoring entity can guide such transactions, enforcing credit limits, for instance. A management component can then synchronize transactions conducted by the device with a server of a financial institution over a remote communication interface, such as the Internet or a cellular/mobile communication network. Accordingly, a mobile device can replace a traditional credit card in transacting credit business.