...if you have a birthday between being sent an Invitation to Apply and your application being lodged, this may mean you fall into a different age bracket. If this happens, and you are no longer eligible for as many points (see the table below), we may not be able to approve your application.
Although you have four months in which to lodge your application, if you know your upcoming birthday will change the age bracket you fall into, it is in your interest to lodge your application before your birthday – even though you have four months to do so.