"When does a Member who does not recontest their seat at the next election effectively retire? Is it at the dissolution of the House?"

Thanks for your question.

Yes, you’re right! A member of the House of Representatives who does not recontest—seek re-election—at a federal election ceases to be a member from the date of the dissolution of the House. Dissolution refers to the act of closing the House of Representatives prior to calling a federal election.

This fact sheet has more information about members of the House of Representatives.

diagram to help explain When does a Member who does not recontest their seat at the next election effectively retire? Is it at the dissolution of the House?