I rang centrelink the other week (unreplated question) and I asked about this as well. Now just to make sure I have my info right..

I have to ring tomorrow and say no I don't lodge a tax return. Dh did his Tax yesterday (we are going away so did it early) So I should recieve my payment sometime this month

Is there anything else I need to do. oh and I think they saud I could do it online but im not sure how to