Answer
You will have to pay back family allowances if you received them but you were not entitled to them. This could happen, for example, when your child is no longer in education but you continue to receive an education allowance for him because either you have not informed the competent family allowances compensation fund of this change in circumstances or you have given false information.
In this instance, though, the obligation to pay back the allowances may be waived if you are able to demonstrate that you had always acted in good faith and that the recovery of these overpayments would leave you in extreme financial difficulty. Please note that both these conditions must be met.