A MEC group is a group of Australian entities that is wholly foreign-owned and does not have a common Australian resident head company. Formation of a MEC group and certain other events must be notified to the ATO on the following downloadable paper forms:
Notification of formation of a multiple entry consolidated (MEC) group
Notification of members joining and/or leaving a Multiple entry consolidated (MEC) group
Notification of conversion to a multiple entry consolidated (MEC) group
Notification of continuation of a multiple entry consolidated (MEC) group with a new provisional head company
Notification of provisional head company no longer eligible (MEC) group
Notification of error(s) in the calculation of tax cost setting amounts - Multiple entry consolidated (MEC) group
Alternatively, a tax agent can notify via ELS, but must also post to the ATO a nomination of provisional head company, signed by all eligible tier one companies, which is included as part 5 of the MEC formation form (NAT 7024). Notification will not be processed until this nomination is received.
For information on the notifiable events and the use of the various forms refer to section C10-1-110 'MEC groups - notifiable events' in the Consolidation reference manual. Section C10 as a whole contains detailed information on the rules for MEC groups.