(1) This section applies to a debt if:
(a) under section 82, the debt is recoverable by the Commonwealth by means of deductions from instalments of family tax benefit to which the person is entitled; or
(b) the debt is a debt due by the person to the Commonwealth under the Social Security Act 1991 , the Data - matching Program (Assistance and Tax) Act 1990 , the Farm Household Support Act 2014 , the Paid Parental Leave Act 2010 , the Social Security Act 1947 , the Student Assistance Act 1973 , the Veterans' Entitlements Act 1986 or the Military Rehabilitation and Compensation Act 2004 ; or
(c) the debt was incurred under Part 8 of the Student and Youth Assistance Act 1973 as in force before 1 July 1998.
(2) The debt is to be deducted from instalments of family tax benefit to which the person is entitled in the following way:
(a) the Secretary is to determine the amount by which each instalment of family tax benefit is to be reduced; and
(aa) a determination under paragraph (a) may be an amount that would reduce the payment to nil if the person has consented to the amount of the deduction being an amount that would reduce the payment to nil; and
(b) each instalment of family tax benefit is to be reduced by the amount determined by the Secretary until the sum of those amounts, and any amounts recovered under an Act referred to in paragraph (1)(b), is equal to the debt.
The Secretary may from time to time vary the amount by which instalments of family tax benefit are to be reduced.