The statutory framework
6 Section 18 of the Social Security Act 1991 (Cth) (hereafter, the "SS Act") defines (and defined) "parenting payment":
18 Parenting payment definitions
In this Act, unless the contrary intention appears:
…
parenting payment means:
(a) pension PP (single); or
…
pension PP (single) means parenting payment whose rate is worked out under the Pension PP (Single) Rate Calculator in section 1068A.
…
7 Section 23(1) of the SS Act defines "social security pension" to include parenting payments, "social security payment" to include social security pensions, and "income support payment" to also include social security pensions:
23 Dictionary
(1) In this Act, unless the contrary intention appears:
…
social security payment means:
(a) a social security pension; or
…
social security pension means:
…
(e) a pension PP (single); or
…
income support payment means a payment of:
…
(b) a social security pension; or
….
8 Thus, Ms Fahy's claim concerns a social security payment, which is a kind of income support payment.
9 The eligibility criteria for the Parenting Payment is (and was) governed by s 500 of the SS Act. There is no dispute that Ms Fahy was eligible for the Parenting Payment at all of the relevant times.
10 Part 3 of the Administration Act is entitled "provision of benefits". Division 1 of that part is entitled, "claim for social security payment or concession card". That division commences with s 11, which relevantly provides (and provided):
11 General rule
(1) Subject to subsections (2) and (3) and Subdivision B, a person who wants to be granted:
(a) a social security payment…
…
must make a claim for the payment or card in accordance with this Division.
…
11 Section 16 of the Administration Act (which is also within Div 1 of Pt 3) specifies how a claim for a social security payment is to be made. Relevantly, it provides (and provided):
16 How to make a claim
(1) A person makes a claim for a social security payment or a concession card:
(a) by lodging a written claim for the payment or card; or
(b) by making the claim in accordance with subsection (7).
(2) A written claim for the purpose of subsection (1) for one social security payment or for a concession card must be in accordance with a form approved by the Secretary.
…
(4) A written claim is lodged by being delivered:
(a) to a person apparently performing duties at a place approved for the purpose by the Secretary; or
(b) to a person approved for the purpose by the Secretary; or
(c) in a manner, and to a place, approved for the purpose by the Secretary.
…
(7) A person may make a claim in a manner approved by the Secretary for the purposes of this subsection.
…
12 Ordinarily, a social security payment becomes payable on the "start day". The relevant provisions are as follows, namely:
41 Commencement
(1) Unless another provision of the social security law provides otherwise, a social security payment becomes payable to a person on the person's start day in relation to the social security payment.
(2) Unless another provision of the social security law provides otherwise, a concession card takes effect on the person's start day in relation to the card.
42 Start day
For the purposes of the social security law, a person's start day in relation to a social security payment or a concession card is the day worked out in accordance with Schedule 2.
13 Schedule 2 to the Administration Act provides (and provided) that, subject to certain exceptions that do not presently apply, the "start day" in relation to a claim for a social security payment is the day on which the claim is made. Item 3 of Sch 2 provides as follows, namely:
3 Start day - general rule
(1) If:
(a) a person makes a claim for a social security payment; and
(b) the person is qualified for the payment on the day on which the claim is made;
the person's start day in relation to the payment is the day on which the claim is made.
…
14 Thus, in the normal case, a social security payment becomes payable on the day on which the claim is made, which, in the case of a written claim, is when it is lodged. In turn, a written claim is lodged when it is "delivered".
15 There are some exceptions. Sections 12, 13 and 15 of the Administration Act provide (and provided) that a person may be deemed to have made a claim for an income support payment in certain cases, the relevance of which will become apparent. Those provisions are as follows, namely:
12 Deemed claim in certain cases
(1) The Secretary may determine that, for the purposes of the social security law, a person is taken to have made a claim for an income support payment (the new payment), if:
(a) the person became qualified for the new payment while receiving another income support payment; or
(b) the person became qualified for the new payment immediately after ceasing to receive another income support payment.
(2) The person is taken to have made the claim for the new payment on the day specified in the Secretary's determination. That day must not be earlier than:
(a) the day that is 13 weeks before the day on which the Secretary's determination is made; or
(b) if the person became qualified for the new payment after the day referred to in paragraph (a) - the day on which the person became qualified for the new payment.
…
13 Deemed claim - person contacting Department about a claim for a social security payment
(1) For the purposes of the social security law, if:
(a) the Department is contacted by or on behalf of a person in relation to a claim for a social security payment; and
(aa) the person is, on the day on which the Department is contacted, included in a class of persons determined in an instrument under section 14A; and
(b) the person is, on the day on which the Department is contacted, qualified for the social security payment; and
(d) the person lodges a claim for the social security payment within 14 days after the Department is contacted;
the person is taken to have made a claim for the social security payment on the day on which the Department was contacted.
(2) For the purposes of the social security law, if:
(a) the Department is contacted by or on behalf of a person in relation to a claim for a social security payment, other than crisis payment or special employment advance; and
(aa) the person is, on the day on which the Department is contacted, included in a class of persons determined in an instrument under section 14A; and
(b) the person is, on the day on which the Department is contacted, qualified for the social security payment; and
(d) the person lodges a claim for the payment more than 14 days, but not more than 13 weeks, after the Department is contacted; and
(e) the Secretary is satisfied that:
(i) throughout the period starting on the day on which the Department was contacted and ending on the day on which the person lodged the claim, the person was suffering from a medical condition; and
(ii) that medical condition, or circumstances related to that medical condition, had a significant adverse effect on the person's ability to lodge the claim earlier;
the person is taken to have made a claim for the social security payment on the day on which the Department was contacted.
(3) For the purposes of the social security law, if:
(a) the Department is contacted by or on behalf of a person (the claimant) in relation to a claim for a social security payment, other than crisis payment or special employment advance; and
(aa) the claimant is, on the day on which the Department is contacted, included in a class of persons determined in an instrument under section 14A; and
(b) the claimant is, on the day on which the Department is contacted, qualified for the social security payment; and
(d) the claimant lodges a claim for the payment more than 14 days, but not more than 13 weeks, after the Department is contacted; and
(e) the Secretary is satisfied that:
(i) throughout the period starting on the day on which the Department was contacted and ending on the day on which the claimant lodged the claim, the claimant was caring for, or was the partner of, another person; and
(ii) throughout that period, the other person suffered from a medical condition; and
(iii) the medical condition, or circumstances related to the medical condition, from which the other person was suffering had a significant adverse effect on the claimant's ability to lodge the claim earlier;
the claimant is taken to have made a claim for the social security payment on the day on which the Department was contacted.
(3A) For the purposes of the social security law, if:
(a) the Department is contacted by or on behalf of a person in relation to a claim for a social security payment; and
(aa) the person is, on the day on which the Department is contacted, included in a class of persons determined in an instrument under section 14A; and
(b) the person is, on the day on which the Department is contacted, qualified for the social security payment; and
(d) the person lodges a claim for the social security payment more than 14 days, but not more than 13 weeks, after the Department is contacted; and
(e) the Secretary is satisfied that, in the special circumstances of the case, it was not reasonably practicable for the person to lodge the claim earlier;
the person is taken to have made a claim for the social security payment on the day on which the Department was contacted.
…
15 Deemed claim - incorrect or inappropriate claims
(1) For the purposes of the social security law, if:
(a) a person makes an incorrect claim; and
(b) the person subsequently makes a claim for a social security payment for which the person is qualified; and
(c) the Secretary is satisfied that it is reasonable that this subsection be applied;
the person is taken to have made a claim for that social security payment on the day on which he or she made the incorrect claim.
(2) For the purposes of this section, a claim made by a person is an incorrect claim if:
(a) the claim is for a social security payment, other than a supplementary payment; and
(b) when the claim was made, the person was not qualified for the payment claimed but was qualified for another social security payment, other than a supplementary payment.
(3) For the purposes of this section, a claim made by a person is an incorrect claim if:
(a) the claim is for a supplementary payment; and
(b) when the claim was made, the person was not qualified for the payment claimed but was qualified for another supplementary payment.
(4) For the purposes of the social security law, if:
(a) a person makes a claim for a pension, allowance, benefit or other payment under a law of the Commonwealth, other than this Act or the 1991 Act, or under a program administered by the Commonwealth, that is similar in character to a social security payment, other than a supplementary payment (the initial claim); and
(b) when the claim was made, the person was qualified for a social security payment, other than a supplementary payment; and
(c) the person subsequently makes a claim for the social security payment referred to in paragraph (b) (the later claim); and
(d) the Secretary is satisfied that it is reasonable that this subsection be applied;
the person is taken to have made the later claim on the day on which the initial claim was made.
(4A) For the purposes of the social security law, if:
(a) a person makes a claim for an income support payment (the initial claim); and
(b) on the day on which the initial claim is made, the person is qualified for another income support payment (the other income support payment); and
(c) the person subsequently makes a claim for the other income support payment (the later claim); and
(d) the Secretary is satisfied that it is reasonable that this subsection be applied;
the person is taken to have made the later claim on the day on which the initial claim was made.
(4B) For the purposes of the social security law, if:
(a) a person makes a claim for a supplementary payment (the initial claim); and
(b) on the day on which the initial claim is made, the person is qualified for another supplementary payment (the other supplementary payment); and
(c) the person subsequently makes a claim for the other supplementary payment (the later claim); and
(d) the Secretary is satisfied that it is reasonable that this subsection be applied;
the person is taken to have made the later claim on the day on which the initial claim was made.
(5) In this section:
supplementary payment means:
(a) carer allowance; or
(b) double orphan pension; or
(c) education entry payment; or
(i) mobility allowance; or
(j) pensioner education supplement.
16 Section 34 of the Administration Act governs the manner in which a claim can be withdrawn. It is not disputed that, on 5 April 2020, Ms Fahy validly withdrew the online claim that she had previously commenced on 20 September 2017 - it is the hard copy claim that she says was posted on 20 September 2017 that is in issue presently.