As far as FTB you need to reconcile otherwise you will end up with a bill of the money you were paid. Last year we didn't reconcile and we got a bill in the post for the money we had been paid that year. I rang up and reconciled (i did two years at once) and then we got paid $8000 in money we were owed.
I have no idea what you mean ladybirdflies Is this the estimate I give centerlink? When do I have to give that by?

Also, does my DH need to chase up group certificates from past bosses or can the tax accountant (eg H&R block) do this?