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Security of Payment NSW:
Issuing an Invoice
Understand tax invoice requirements and payment claim procedures under the NSW Security of Payment Act.
You can be confident that you are getting the right legal advice.
Whether you're a builder, contractor, subcontractor, or supplier, properly issuing invoices is essential for protecting your payment rights under the Building and Construction Industry Security of Payment Act 1999 (NSW). Learn the requirements for valid tax invoices, when to issue them, and how they relate to SOPA payment claims.
BOOK YOUR FREE FIRST CONSULTWhat is a Security of Payment Invoice?
An invoice is an invaluable document that acts as a confirmation receipt of payment. In the construction industry, invoices serve a dual purpose—they satisfy Australian Taxation Office (ATO) requirements for GST purposes and can form part of your payment claim process under the Security of Payment Act.
Drafting an invoice for construction projects is not like creating any other plain bill. When dealing with payments in the building industry, you should do it the legal way to protect your rights and maintain compliance with both tax and construction payment legislation.
Tax Invoice Definition
An invoice is basically referred to as a tax invoice. It is a document issued by a provider of products or services to the purchaser. It serves as a record of purchase or proof of transaction.
You will need a tax invoice if the claim is more than $82.50 (including Goods and Services Tax or GST). The customer must request the tax invoice within thirty (30) days from the service of the products or materials or from when the customer receives a bill. The tax invoice must be provided within twenty-eight (28) days from the customer's request.
As a subcontractor or supplier, you should specify the quantities and costs of the used products or services in the invoice. The information the invoice contains can vary depending on what has been used, the type of transaction, and the preferences of the purchasing company.
The Role of Invoices in SOPA
Proper documentation is essential when making payment claims under the Security of Payment Act NSW. While SOPA does not require tax invoices specifically—it requires payment claims that meet statutory requirements—many contractors choose to use their tax invoice as their payment claim document. This dual-purpose approach can streamline administration, but only if the document satisfies both ATO tax requirements and all SOPA payment claim requirements. If you need to pursue adjudication for unpaid amounts, having documentation that clearly identifies the work performed, amounts claimed, and compliance with SOPA procedures will strengthen your position.
Tax Invoice, Payment Claim,
and Payment Schedule
Understanding the relationship between tax invoices, payment claims, and payment schedules is crucial for contractors and subcontractors navigating the NSW Security of Payment framework.
Is a Tax Invoice the Same as a Payment Claim?
A tricky question! The answer is it can be—but only if specific requirements are met.
A tax invoice and a payment claim serve different legal purposes. A tax invoice is issued under Australian tax law when a taxable supply is made (typically when goods or services are provided). A payment claim under the Security of Payment Act is a demand for a progress payment for construction work carried out or related goods and services supplied.
Your tax invoice can serve as your payment claim if—and only if—it satisfies all SOPA requirements: it must identify the construction work or related goods and services, state the amount claimed, be served at the correct reference date, be issued by the correct party under a construction contract, and (depending on your contract and when it was entered into) may need to include an endorsement stating it is made under the Security of Payment Act. Simply adding the SOPA wording to a standard invoice does not automatically make it a valid payment claim unless all these requirements are met.
What is a Payment Schedule?
A payment schedule is the respondent's formal response to your payment claim. Under the Security of Payment Act NSW, if the party receiving your payment claim disputes the amount, they must provide a payment schedule within the time required by the construction contract or within 10 business days after the payment claim is served, whichever time expires earlier. This payment schedule must identify the payment claim, indicate the amount the respondent proposes to pay (if any), and provide reasons for any difference between the claimed and scheduled amounts.
When to Issue a Tax Invoice
Timing matters for both tax compliance and payment claim purposes. You should issue your tax invoice in accordance with ATO requirements (generally when you make a taxable supply or when requested by the customer). For Security of Payment purposes, if you intend your invoice to also serve as a payment claim, you must serve it at the correct reference date specified in your construction contract (or monthly if not specified).
Whether you need to include an endorsement stating the document is made under the Security of Payment Act depends on when your construction contract was entered into and what type of contract it is. While including a statement such as "This Tax Invoice is a Payment Claim under the Building and Construction Industry Security of Payment Act 1999 (NSW)" is consistent with current best practice and will satisfy endorsement requirements where they apply, not all contracts require this endorsement. If you're unsure whether your payment claim needs specific endorsement wording, seek specialist construction law advice to ensure compliance with SOPA requirements for your particular contract.
Tax Invoice Requirements
For a tax invoice to be valid under Australian tax law, it must contain at least seven significant pieces of information. The invoice requirements differ based on the value of the invoice and what is being sold.
1. Tax Invoice Statement
A statement declaring that the document is intended to be a tax invoice. Generally, the word 'tax invoice' is used to label the document, preferably at the top of the page.
2. Seller's Identity
The identity of the seller, such as the business name or trading name. This establishes who is providing the goods or services.
3. ABN and/or ACN
The seller's Australian Business Number (ABN) and/or Australian Company Number (ACN). This is essential for tax identification purposes.
4. Issue Date
The date when the tax invoice was created or issued. This establishes the timeline for payment obligations and tax reporting.
5. Description of Goods or Services
A brief list of the items sold including quantity and price for each, and the total price. For construction work, provide sufficient detail to identify what work or materials are being claimed.
6. GST Amount Payable
The GST amount payable. The vendor can display GST for each item in a separate column, or within the total price. If you choose not to display it separately, use a statement such as 'Total includes GST'.
7. Payer's Identity
The payer's identity or ABN and/or ACN. Include the payer's ABN if the invoice is over $1,000. This identifies who is responsible for payment.
1. Tax Invoice Statement
A statement declaring that the document is intended to be a tax invoice. Generally, the word 'tax invoice' is used to label the document, preferably at the top of the page.
2. Seller's Identity
The identity of the seller, such as the business name or trading name. This establishes who is providing the goods or services.
3. ABN and/or ACN
The seller's Australian Business Number (ABN) and/or Australian Company Number (ACN). This is essential for tax identification purposes.
4. Issue Date
The date when the tax invoice was created or issued. This establishes the timeline for payment obligations and tax reporting.
5. Description of Goods or Services
A brief list of the items sold including quantity and price for each, and the total price. For construction work, provide sufficient detail to identify what work or materials are being claimed.
6. GST Amount Payable
The GST amount payable. The vendor can display GST for each item in a separate column, or within the total price. If you choose not to display it separately, use a statement such as 'Total includes GST'.
7. Payer's Identity
The payer's identity or ABN and/or ACN. Include the payer's ABN if the invoice is over $1,000. This identifies who is responsible for payment.
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Just a little reminder: the tax invoice is normally created by the providers of goods and services. It must contain at least these seven important details to be valid for both tax purposes and to support your payment entitlements under construction contracts.
Recipient Created Tax Invoices (RCTI)
In some special cases, the recipient of the construction goods or services may create the tax invoice and send it to the supplier. This is called a Recipient Created Tax Invoice (RCTI). After receiving the payment claim, the payer creates the invoice on behalf of the supplier.
When Can a Payer Issue an RCTI?
The payer can issue an RCTI if all of the following conditions are met:
- You and the payer are both registered for GST
- You and the payer agree in writing that the payer may issue an RCTI, and you will not issue a tax invoice
- The agreement is current and effective when the payer has issued the RCTI
- The goods or services being sold under the agreement are of the type determined by the ATO that can be invoiced using an RCTI
The written agreement can be a separate document or included within your construction contract.
Requirements for a Valid RCTI
The RCTI is valid if it meets these requirements:
- Contains enough information (all seven tax invoice requirements)
- Includes the purchaser's identity or ABN
- Is payable by the supplier (if GST is payable)
- The payer issues the original or a copy of the RCTI to the supplier within 28 days of the date of the sale and the value of the sale is determined
- The payer retains the original or a copy of the RCTI
- Both parties reasonably comply with their obligations under the tax laws
RCTI arrangements are common in construction where head contractors issue payment schedules and tax invoices to subcontractors as part of streamlined payment processes.
How to Write a Tax Invoice
As part of the Security of Payment process, you should know how to properly serve a tax invoice. There are multiple templates available, but there is a general arrangement of details that should appear on your invoice for construction work.
Step 1: Create a Header
The header contains the information about your construction business.
- Put the word 'Tax Invoice' at the upper right portion of the document
- On the upper left side of the page, include:
- • Your construction business name
- • ABN and/or ACN
- • Business address
- • Business phone number and email address
- • Business logo (optional but recommended for professional presentation)
Step 2: Include the Recipient and Invoice Information
- Include the recipient's details below the header:
- • Recipient's name
- • Recipient's ABN and/or ACN (if invoice is over $1,000)
- • Recipient's address
- On the right side of the page, cross from the recipient's contact information, include:
- • Invoice number (use a sequential numbering system)
- • Invoice date
- • Payment terms or due date
- • Reference to project or contract (if applicable)
Step 3: Itemise the Services Rendered
- Create a chart to itemise the goods or services with these column headings:
- • Date
- • Materials
- • Quantity
- • Labour
- • Rate
- • Hours
- • Subtotal
- Calculate totals:
- • Subtotal the amount due
- • Add any delivery fees or other charges
- • Show GST separately or include statement 'Total includes GST'
- • Calculate the overall total
- Add supplemental information:
- • Payment instructions (bank account details, payment methods accepted)
- • Late payment terms (if applicable)
- • Professional courtesy message thanking the recipient
Important for Security of Payment purposes:
If you intend this invoice to also serve as your payment claim under SOPA, you must ensure it meets all statutory requirements including being served at the correct reference date, identifying the construction work or related goods and services, stating the amount claimed, and (depending on when and what type of contract you have) potentially including an endorsement. While including a statement such as "This Tax Invoice is a Payment Claim under the Building and Construction Industry Security of Payment Act 1999 (NSW)" is best practice and will satisfy endorsement requirements where they apply, simply adding this wording does not automatically make an invoice a valid payment claim—all SOPA requirements must be met. Seek specialist advice if you're unsure about your specific contract requirements.
Step 1: Create a Header
The header contains the information about your construction business.
- Put the word 'Tax Invoice' at the upper right portion of the document
- On the upper left side of the page, include:
- • Your construction business name
- • ABN and/or ACN
- • Business address
- • Business phone number and email address
- • Business logo (optional)
Step 2: Include the Recipient and Invoice Information
- Include the recipient's details below the header:
- • Recipient's name
- • Recipient's ABN and/or ACN (if over $1,000)
- • Recipient's address
- On the right side, include:
- • Invoice number
- • Invoice date
- • Payment terms or due date
- • Project/contract reference
Step 3: Itemise the Services Rendered
- Create a chart with column headings: Date, Materials, Quantity, Labour, Rate, Hours, Subtotal
- Calculate totals: Subtotal, delivery fees, GST, overall total
- Add supplemental information: Payment instructions, late payment terms, courtesy message
Important for SOPA purposes:
If you intend this invoice to also serve as your payment claim under SOPA, ensure it meets all statutory requirements. While including "This Tax Invoice is a Payment Claim under the Building and Construction Industry Security of Payment Act 1999 (NSW)" is best practice, simply adding this wording does not automatically make it a valid payment claim—all SOPA requirements must be met. Seek specialist advice if unsure.
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Navigating tax invoice requirements and Security of Payment procedures can be complex, especially when payment disputes arise or you need to enforce your rights under the Act. If you're facing late payments, disputed invoices, or need guidance on SOPA payment claims, John Dela Cruz can provide clarity on your rights and practical advice on your next steps. With over 17 years focusing exclusively on construction law, John helps builders, contractors, subcontractors, and suppliers across NSW resolve payment issues efficiently and protect their businesses.
Why Choose Contracts Specialist
John Dela Cruz
Principal Lawyer, Contracts Specialist
When you work with Contracts Specialist, you receive legal advice directly from John Dela Cruz — Principal Lawyer with over 17 years of exclusive construction law experience.
John is an Australian Legal Practitioner and he services NSW, Queensland, Victoria, and Tasmania. He has dedicated his entire legal career to specialise in construction law. As a former Divisional President of the Master Builders Association NSW, he combines deep legal expertise with comprehensive industry knowledge. He maintains daily experience in building dispute tribunals (NCAT, VCAT, QCAT) and courts across multiple jurisdictions.
Unlike generalist lawyers who handle various legal matters, John specialises exclusively in construction law matters affecting homeowners, builders, contractors, and subcontractors. You receive focused expertise from a lawyer who understands both the legal framework and the practical realities of the building industry.
How to Get Started
1
Book Your Free Consultation
Book your free consultation through our online calendar - choose a time that suits you. No cost, no obligation. Direct access to Principal Lawyer John Dela Cruz to discuss your payment dispute or Security of Payment matter.
2
Discuss Your Matter with Our Principal Lawyer
Speak directly with John Dela Cruz, Principal Lawyer, about your construction payment issue, invoice disputes, or SOPA payment claim. We may request copies of your invoices, contracts, or payment claim documents to fully understand your situation and assess your legal position.
3
Receive Your Cost Disclosure & Proceed
Receive a detailed cost disclosure outlining the scope of work and fees for handling your Security of Payment matter. Transparent fee structure with clear documentation. Review and agree to proceed when you're ready - no hidden costs, no surprise fees.
1
Book Your Free Consultation
Book your free consultation through our online calendar - choose a time that suits you. No cost, no obligation. Direct access to Principal Lawyer John Dela Cruz to discuss your payment dispute or Security of Payment matter.
2
Discuss Your Matter with Our Principal Lawyer
Speak directly with John Dela Cruz, Principal Lawyer, about your construction payment issue, invoice disputes, or SOPA payment claim. We may request copies of your invoices, contracts, or payment claim documents to fully understand your situation and assess your legal position.
3
Receive Your Cost Disclosure & Proceed
Receive a detailed cost disclosure outlining the scope of work and fees for handling your Security of Payment matter. Transparent fee structure with clear documentation. Review and agree to proceed when you're ready - no hidden costs, no surprise fees.
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Get Expert Advice on Security of Payment Invoices
Whether you're dealing with unpaid invoices, need to prepare a SOPA payment claim, or require guidance on tax invoice requirements for construction work, our Principal Lawyer provides specialist advice with transparent fees and direct access.
Book your free consultation today - understand your payment rights and recovery options with no cost and no obligation.
BOOK YOUR FREE FIRST CONSULT
or contact us at john@contractsspecialist.com.au
Frequently Asked Questions
About Security of Payment Invoices
Common questions about tax invoice requirements, payment claims, and Security of Payment procedures in NSW construction.
Can my tax invoice also be a payment claim under the Security of Payment Act?
Yes, your tax invoice can serve as a payment claim under the Building and Construction Industry Security of Payment Act 1999 (NSW) if—and only if—it satisfies all SOPA requirements. This means the document must identify the construction work or related goods and services, state the amount claimed, be served at the correct reference date under your construction contract, be issued by the correct party, and (depending on when and what type of contract you have) may need to include an endorsement stating it is made under the Act. Simply adding SOPA wording to a standard invoice does not automatically make it a valid payment claim—all statutory requirements must be met. This dual-purpose approach can streamline your payment process while maintaining both tax compliance and SOPA protection, but only when properly executed.
What happens if I don't issue a tax invoice for construction work over $82.50?
If you don't issue a tax invoice when required, you may face ATO compliance issues and you'll lack proper documentation to support your payment claim under the Security of Payment Act. The customer can request a tax invoice within 30 days of receiving goods or services, and you must provide it within 28 days of their request.
Do I need to include the customer's ABN on every tax invoice?
You only need to include the customer's ABN or ACN if the invoice total is over $1,000. For invoices under this amount, the customer's name and address are sufficient. However, including the ABN for all invoices is good practice for record-keeping purposes.
What is a Recipient Created Tax Invoice (RCTI) and when is it used in construction?
An RCTI is when the payer (often a head contractor) creates the tax invoice on behalf of the supplier (subcontractor). This is common in construction where head contractors manage centralised payment systems. Both parties must be GST registered and have a written agreement allowing RCTI arrangements. The RCTI must be provided to the supplier within 28 days.
How long do I need to keep copies of tax invoices?
You must keep tax invoice records for at least five years from the date you prepared or obtained them, or completed the transactions, whichever is later. This applies for both ATO tax compliance and potential Security of Payment disputes that may arise.
What should I do if a customer disputes my invoice?
If your invoice is also a payment claim under the Security of Payment Act, the customer must provide a payment schedule within the time required by the contract or within 10 business days after the payment claim is served, whichever time expires earlier. If they fail to provide a payment schedule, you may be entitled to the full amount claimed. Seek specialist construction law advice promptly to understand your rights and enforce payment.
Can my tax invoice also be a payment claim?
Yes, if it satisfies all SOPA requirements including correct reference date, identifies work and amount, correct party, and (depending on your contract) required endorsement. Simply adding SOPA wording doesn't automatically make it valid—all statutory requirements must be met.
What if I don't issue a tax invoice?
You may face ATO compliance issues and lack proper documentation for SOPA claims. Customers can request within 30 days, you must provide within 28 days.
Do I need customer's ABN on every invoice?
Only if invoice total is over $1,000. Below this, name and address sufficient. Including ABN for all invoices is good practice.
What is an RCTI?
When the payer creates the tax invoice for the supplier. Common in construction with head contractors. Both must be GST registered with written agreement.
How long to keep tax invoices?
At least five years from date prepared or transactions completed, whichever is later. Required for ATO and potential SOPA disputes.
What if customer disputes my invoice?
They must provide payment schedule within contract time or 10 business days, whichever is earlier. Seek specialist advice if they fail to respond.
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Related Resources
Explore our comprehensive guides and resources to learn more about Security of Payment and protecting your payment rights.
Security of Payment Act NSW
Comprehensive guide to the Building and Construction Industry Security of Payment Act 1999 (NSW) and how it protects your payment rights.
Learn More →SOPA Payment Claims
Learn how to prepare and submit an effective payment claim under the Security of Payment Act to recover unpaid amounts.
Learn More →Security of Payment Act NSW
Comprehensive guide to the Building and Construction Industry Security of Payment Act 1999 (NSW) and how it protects your payment rights.
Learn More →SOPA Payment Claims
Learn how to prepare and submit an effective payment claim under the Security of Payment Act to recover unpaid amounts.
Learn More →→ Swipe to see all resources