"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, or seek re-election, at a general 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 general election.

For more information, check out this fact sheet.

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?