An independent redistribution committee will be appointed, as the electoral commission begins its regular look sat the voting boundaries in the ACT.
Acting Electoral Commissioner Tom Rogers said the process was required to take place every seven years.
"The ACT redistribution was due in December 2013 but was deferred at the time as population projections suggested the ACT might possibly gain a third seat," he said.
Population figures mean the seats of Fraser and Canberra will continue to cover the ACT, and the ACT will not get a third seat.
Organisations and members of the public will be invited to submit suggestions about the redistribution in April.
Federal redistributions are also commencing in Western Australia and New South Wales.