South Australia
Late Payment of Government Debts (Interest) Act 2013
An Act to provide for interest to be paid on the late payment of debts due to businesses in connection with contracts for the supply of goods or services to State Government; and for other purposes.

Contents
1	Short title
3	Preliminary
4	Change in identity of parties
5	Occurrence of default event
6	Interest payable if default event occurs
7	Disputes
8	Reporting
9	Regulations
Legislative history

The Parliament of South Australia enacts as follows:
1—Short title
This Act may be cited as the Late Payment of Government Debts (Interest) Act 2013.
3—Preliminary
	(1)	In this Act, unless the contrary intention appears—
contract for the supply of goods or services means a contract—
	(a)	for the sale or transfer of goods; or
	(b)	for the hire of goods; or
	(c)	for the provision of services;
designated contract means a contract for the supply of goods or services but does not include—
	(a)	a written contract where the contract—
	(i)	makes specific provision for payment terms that are greater than the prescribed number of days; or
	(ii)	makes specific provision for the payment of interest if a payment is not made in accordance with the terms of the contract; or
	(b)	a construction contract under the Building and Construction Industry Security of Payment Act 2009; or
	(c)	a contract where the consideration for the sale, transfer or hire of goods, or the provision of services, is not, or does not include, a monetary consideration; or
	(d)	a contract of a class excluded from the ambit of this definition by the regulations;
designated payment period means the period of days that applies under section 5(1)(e);
GST means the tax payable under the GST law;
GST law means—
	(a)	A New Tax System (Goods and Services Tax) Act 1999 of the Commonwealth; and
	(b)	the related legislation of the Commonwealth dealing with the imposition of a tax on the supply of goods and services;
not-for-profit entity means—
	(a)	an entity that is registered, or entitled to be registered, under the Australian Charities and Not-for-profits Commission Act 2012 of the Commonwealth; or
	(b)	any other entity (other than a government entity) that is not carried on for the purposes of profit or gain or for the benefit of particular people;
public authority means a public authority under the Public Finance and Audit Act 1987 brought within the ambit of this definition by notice published by the Treasurer in the Gazette;
purchaser means the buyer in a contract for the sale of goods or the person who contracts with the supplier in any other contract for the supply of goods or services (subject to the operation of section 4);
qualifying body means—
	(a)	a corporation incorporated under the Corporations Act 2001 of the Commonwealth; or
	(b)	a not-for-profit entity;
qualifying contract means a designated contract where—
	(a)	the purchaser is a public authority; and
	(b)	the supplier is a qualifying person or a qualifying body;
qualifying day means the day immediately following the end of a designated payment period that applies in relation to a particular qualifying contract under section 5;
qualifying debt means a debt created by virtue of a qualifying contract;
qualifying person means a natural person whose principal place of residence is situated in Australia;
supplier means the seller in a contract for the sale of goods or the person agreeing with the purchaser to transfer property in goods or to provide a service under any other contract for the supply of goods or services (subject to the operation of section 4);
Treasurer's instruction means an instruction issued by the Treasurer under section 41 of the Public Finance and Audit Act 1987.
	(3)	This Act applies in relation to an invoice sent or a claim made to a public authority or other entity on or after the day on which this Act comes into operation (subject to the invoice or claim being rendered in accordance with a relevant Treasurer's instruction).
4—Change in identity of parties
The operation of this Act in relation to a qualifying debt is not affected by—
	(a)	a change in the identity of a party to the contract creating the debt; or
	(b)	the passing of the right to be paid the debt or the duty to pay it (in whole or in part) to a person other than a party to the contract creating the debt.
5—Occurrence of default event
	(1)	For the purposes of this Act, a default event occurs if—
	(a)	goods or services are provided to a public authority under a qualifying contract; and
	(b)	an invoice is sent or a claim is made by the supplier under the qualifying contract for the payment of a qualifying debt; and
	(ba)	the amount specified as being payable in the invoice or claim does not exceed $1 million (exclusive of GST); and
	(c)	the invoice or claim is rendered to the public authority, or to another public authority or other entity, in accordance with any relevant Treasurer's instruction; and
	(d)	the invoice or claim complies with any requirements as to the imposition of GST (as between supplier and purchaser); and
	(e)	payment by or on behalf of the public authority is made to the supplier but the payment is made more than the prescribed number of days after the relevant day; and
	(f)	the public authority (or another public authority or entity acting on behalf of the public authority) did not dispute a relevant matter within the designated payment period.
	(2)	A public authority or other entity must, in initiating a dispute under subsection (1)(f), comply with any procedure set out in any relevant Treasurer's instruction.
	(3)	In this section—
relevant day means the day on which an invoice or claim (being an invoice or claim that complies with any relevant Treasurer's instruction and is in all other respects in the correct form for payment) is received by a public authority, or a public authority or other entity acting on behalf of a public authority, in accordance with any relevant Treasurer's instruction;
relevant matter means—
	(a)	whether goods or services have been provided in accordance with the terms or provisions of a qualifying contract; or
	(b)	some other matter relating to the supply of goods or services under a qualifying contract; or
	(c)	whether an invoice or claim has been properly rendered; or
	(d)	any other prescribed matter.
6—Interest payable if default event occurs
	(1)	The supplier under the qualifying contract in relation to which a default event occurs is (subject to this section) entitled to a minimum amount of interest calculated in accordance with the regulations.
	(2)	Regulations made for the purposes of subsection (1) must provide for a minimum amount of interest that is not less than the amount that would have applied under subsection (1) as in force immediately before the commencement of section 5 of the Late Payment of Government Debts (Interest) (Review) Amendment Act 2024.
	(3)	A supplier is not entitled to interest if the minimum amount of interest calculated under this section is less than—
	(a)	$10; or
	(b)	if another amount is prescribed by the regulations for the purposes of this subsection—that amount.
	(5)	Interest payable under this section will be a liability to be satisfied by the public authority that is in default (and will be payable out of money made available or held for the purposes of the public authority).
	(6)	Interest payable under this Act must be paid by the public authority within 2 business days of the authority making the payment for the goods or services supplied under the qualifying contract.
	(7)	To avoid doubt, interest is not payable on any unpaid interest under this section.
	(8)	This section applies subject to the outcome of any dispute under section 7.
7—Disputes
	(1)	If a dispute arises between a public authority and a supplier about whether interest or an amount of interest is payable under this Act on account of a prescribed matter, the matter may be referred to the Small Business Commission (which is conferred with the function of resolving the dispute).
	(2)	The Small Business Commission may specify procedures and requirements that are to apply in connection with the operation of subsection (1).
	(3)	The Small Business Commission may resolve a dispute in such manner as the Commission determines to be appropriate.
	(4)	The Small Business Commission may, in acting under this section, exercise any power of the Commission that applies under the Small Business Commission Act 2011 in relation to the performance of the Commission's functions under that Act.
	(5)	If the Small Business Commission determines that a public authority should pay interest with respect to a qualifying debt under this Act, the public authority must ensure that the interest, of an amount calculated by the Commission, is paid in accordance with any determination of the Commission.
8—Reporting
	(1)	This section applies in relation to a public authority—
	(a)	that is a government department; or
	(b)	that is a statutory authority that has a governing body.
	(2)	If a public authority to which this section applies makes a payment of interest under this Act in any month, the Chief Executive of the public authority must furnish a report with respect to the payment of the interest to—
	(a)	in the case of a government department—the Minister with responsibility for the department; or
	(b)	in any other case—the governing body of the public authority.
	(3)	The report—
	(a)	must contain any information required under a Treasurer's instruction; and
	(b)	must be furnished—
	(i)	in the case of a report under subsection (2)(a)—within 21 days after the end of the month in which the payment is made; or
	(ii)	in the case of a report under subsection (2)(b)—at the next regular meeting of the governing body of the public authority occurring after the end of the month in which the payment is made.
9—Regulations
The Governor may make such regulations as are contemplated by this Act or as are necessary or expedient for the purposes of this Act.

Legislative history
Notes
	•	Please note—References in the legislation to other legislation or instruments or to titles of bodies or offices are not automatically updated as part of the program for the revision and publication of legislation and therefore may be obsolete.
	•	Earlier versions of this Act (historical versions) are listed at the end of the legislative history.
	•	For further information relating to the Act and subordinate legislation made under the Act see the Index of South Australian Statutes or www.legislation.sa.gov.au.
Legislation amended by principal Act
The Late Payment of Government Debts (Interest) Act 2013 amended the following:
Public Finance and Audit Act 1987
Principal Act and amendments
New entries appear in bold.
Year	No	Title	Assent	Commencement	
2013	82	 Late Payment of Government Debts (Interest) Act 2013 	5.12.2013	17.2.2014 (Gazette 13.2.2014 p886)	
2018	19	 Late Payment of Government Debts (Interest) (Automatic Payment of Interest) Amendment Act 2018	25.10.2018	1.11.2018 (Gazette 1.11.2018 p3924)	
2024	36	Late Payment of Government Debts (Interest) (Review) Amendment Act 2024	19.9.2024	1.11.2024 (Gazette 31.10.2024 p4037)	
2024	65	Statutes Amendment (Small Business Commission and Retail and Commercial Leases) Act 2024	5.12.2024	Pt 6 (s 97)—1.7.2025 (Gazette 19.6.2025 p1865)	
Provisions amended
New entries appear in bold.
Entries that relate to provisions that have been deleted appear in italics.
Provision	How varied	Commencement	
Long title	amended by 19/2018 s 4	1.11.2018	
	amended under Legislation Revision and Publication Act 2002	1.11.2018	
s 2	omitted under Legislation Revision and Publication Act 2002	1.11.2018	
s 3			
s 3(1)			
annual turnover	deleted by 19/2018 s 5(1)	1.11.2018	
business	deleted by 19/2018 s 5(1)	1.11.2018	
designated contract	amended by 36/2024 s 3(1)	1.11.2024	
designated payment period	amended by 36/2024 s 3(2)	1.11.2024	
not-for-profit entity	inserted by 36/2024 s 3(3)	1.11.2024	
prescribed interest rate	deleted by 36/2024 s 3(4)	1.11.2024	
qualifying body	substituted by 19/2018 s 5(2)	1.11.2018	
	substituted by 36/2024 s 3(5)	1.11.2024	
small business	deleted by 19/2018 s 5(3)	1.11.2018	
s 3(2)	deleted by 19/2018 s 5(4)	1.11.2018	
s 5			
s 5(1)	amended by 19/2018 s 6	1.11.2018	
	amended by 36/2024 s 4	1.11.2024	
s 6			
s 6(1) before substitution by 36/2024	amended by 19/2018 s 7(1)	1.11.2018	
PIR	amended by 19/2018 s 7(2)	1.11.2018	
s 6(1)—(3)	substituted by 36/2024 s 5(1)	1.11.2024	
s 6(4)	amended by 19/2018 s 7(3)	1.11.2018	
	deleted by 36/2024 s 5(1)	1.11.2024	
s 6(6)	substituted by 19/2018 s 7(4)	1.11.2018	
	amended by 36/2024 s 5(2)	1.11.2024	
s 6(9)	deleted by 19/2018 s 7(5)	1.11.2018	
s 7			
s 7(1)	substituted by 19/2018 s 8	1.11.2018	
	amended by 65/2024 s 97(1)	1.7.2025	
s 7(2)	amended by 65/2024 s 97(2)	1.7.2025	
s 7(3)	amended by 65/2024 s 97(3)	1.7.2025	
s 7(4)	amended by 65/2024 s 97(4)—(6)	1.7.2025	
s 7(5)	amended by 65/2024 s 97(7)	1.7.2025	
s 10	deleted by 19/2018 s 9	1.11.2018	
Sch 1	omitted under Legislation Revision and Publication Act 2002	1.11.2018	
Transitional etc provisions associated with Act or amendments
Late Payment of Government Debts (Interest) (Automatic Payment of Interest) Amendment Act 2018, Sch 1
1—Transitional provision
An amendment made to the Late Payment of Government Debts (Interest) Act  2013 by this Act applies only in relation to an invoice or claim rendered by a supplier (within the meaning of that Act) after the commencement of the amendment.
Late Payment of Government Debts (Interest) (Review) Amendment Act 2024, Sch 1
1—Transitional provision
An amendment made to the Late Payment of Government Debts (Interest) Act 2013 by this Act applies only in relation to an invoice or claim rendered by a supplier (within the meaning of that Act) after the commencement of the amendment.
Historical versions
1.11.2018		
1.11.2024