Usually, trade support loan that is paid to a person must be repaid through the tax system in accordance with Part 3.2, after the person's income reaches a certain threshold. However, in certain situations where trade support loan is wrongly paid to a person, the amount becomes a debt under this Part called an overpayment debt.

Overpayment debts can be recovered through the courts, or under an arrangement the Commonwealth might enter into with the person.