SuperStream is a government reform aimed at improving the efficiency of the superannuation system. Under SuperStream, employers must make super contributions on behalf of their employees by submitting data and payments electronically in accordance with the SuperStream standard. All superannuation funds, including SMSFs, must receive contributions electronically in accordance with this standard.
Note that contributions sent to an SMSF from a related-party employer are exempt from SuperStream and can be made using existing processes.
For more information about the SuperStream standard for contributions to SMSFs, go here