Having a chat with Centrelink is definitely a good suggestion, as is sussing out their website. They have factsheets that you can print out which outline all the thresholds and requirements etc.

I was able to work out what we were entitled to based on the thresholds and factsheets and I basically rang Centrelink to confirm it all and to make sure I hadn't made any mistakes!! My background is in financial planning so I was already familiar with a lot of this info which made it easier and I just set up a spreadsheet.

You may also like to investigate whether you are entitled to the Parenting Payment, which is another Centrelink payment.