Thanks everyone!
Mrs S - at the moment you can chose to have it paid to you quarterally, with the last quarter withheld until you do you tax return and once it is all reconciled, you get the remaining amount paid, or you can chose to get it as a lump sum at tax time. But is is changing from july, and you can then also choose to get it paid fortnightly to your own bank account, or fortnightly to your child care provider so it come off your bill (This is on top of what centrelink already pays directly to your child care provider), or you can choose to still do it quarterly or annually.