It may not work out to that amount. The system will work out what you are receiving and will reduce your current year payments from now until end of June to reduce any debt. Hopefully that will be enough for it to correct itself otherwise your FTB supplements will be with held

CSS payments only impact you in the financial year that you receive them, so last fin year was reconciled and won't be touched at all. This year is the inky one that will be impacted. No debt will be raised until after reco - and that would only happen if reduction to payment and supplement amounts weren't enough to offset any over payment you may have received.