Subcontractor & Supplier Claims
Building and Construction Law
Key Takeaway
Subcontractors and suppliers are vital to Queensland's construction industry but often face significant challenges in securing payment for work performed and materials supplied.
Subcontractors and suppliers are vital to Queensland's construction industry but often face significant challenges in securing payment for work performed and materials supplied. Our team provides focused legal assistance to subcontractors and suppliers throughout Queensland, helping them navigate the complex web of statutory protections available under the Building Industry Fairness (Security of Payment) Act 2017 (Qld), the Queensland Building and Construction Commission Act 1991 (Qld), and the Subcontractors' Charges Act 1974 (Qld). We understand the unique pressures faced by subcontractors and suppliers and work efficiently to protect your payment entitlements and cash flow.
Subcontractors and suppliers in Queensland benefit from a range of statutory protections designed to ensure they are paid for work performed down the contractual chain. The BIF Act provides the right to progress payments and the ability to adjudicate payment disputes. The Subcontractors' Charges Act allows subcontractors and suppliers to lodge a charge over amounts payable to the head contractor by the principal. Project bank accounts under the BIF Act protect subcontractors on qualifying projects by requiring prompt payment into trust accounts. Supporting statement requirements create transparency in the payment chain. Our team advises on the full suite of protections available, helps prepare and lodge compliant claims, and takes enforcement action when payments are not made. We act swiftly to protect your position, including issuing suspension notices, lodging charges, and making QBCC complaints when necessary.
Subcontractors' Charges Act Protections
The Subcontractors' Charges Act 1974 (Qld) provides a powerful mechanism for subcontractors and suppliers to secure payment by placing a charge over money payable to the head contractor by the principal. To lodge a valid charge, the subcontractor must serve a notice of charge within three months after the work was last performed or materials were last supplied. The charge attaches to the unpaid portion of the head contract proceeds and gives the subcontractor priority over other unsecured creditors of the head contractor. This is particularly valuable when the head contractor becomes insolvent or is delaying payment. The process requires strict compliance with the Act's requirements, including correctly identifying the principal, head contractor, and contract details, and serving the notice within the prescribed timeframe. Once a charge is lodged, the principal must retain sufficient funds to satisfy the charge when making payments to the head contractor. Our team prepares and serves charge notices promptly, ensures strict compliance with legislative requirements, and takes enforcement action through the District Court of Queensland if the charge is not satisfied.
Payment Claims and Supporting Statements
The BIF Act requires head contractors to provide supporting statements when serving payment claims on principals. Supporting statements list all subcontractors and suppliers who have supplied labour, materials, or services in connection with the project and confirm that all amounts due to subcontractors have been paid. This transparency mechanism is critical for protecting subcontractors because it enables principals to make direct payments to subcontractors if the head contractor fails to pay. For subcontractors, preparing a compliant payment claim under the BIF Act involves identifying the correct reference date, describing the work performed, and stating the amount claimed. The claim must be served on the party immediately above in the contractual chain. Subcontractors also have the right to suspend work if a payment claim is not paid or a payment schedule is not provided within the statutory timeframe. Our team assists subcontractors with preparing compliant payment claims, reviewing supporting statements for accuracy, and exercising suspension rights when necessary to apply commercial pressure for payment.
Project Bank Accounts and Retention Sums
Project bank accounts (PBAs) under Part 3 of the BIF Act apply to qualifying government projects with a contract value of $1 million or more and private sector projects valued at $10 million or more. PBAs require the principal to establish a project trust account into which all payments for the project are made. The trustee must then distribute payments promptly to head contractors and subcontractors in accordance with the payment distribution statement. This framework ensures that funds are held in trust for subcontractors and cannot be used by the head contractor for other purposes. Our team advises subcontractors on their rights under the PBA framework, including entitlement to progress payments from the project trust account, review of payment distribution statements, and mechanisms for disputing distributions. We also advise on retention sum trust requirements, which require head contractors to hold retention amounts in trust accounts for the benefit of subcontractors. Understanding these trust account protections is essential for subcontractors seeking to minimise payment risk in Queensland's construction industry.
Subcontractor & Supplier Claims FAQs (Queensland Law)
What are a subcontractor's payment rights under the BIF Act?
Under the BIF Act 2017 (Qld), our team advises that subcontractors and suppliers have a statutory entitlement to progress payments for construction work or related goods and services. The Act provides a rapid adjudication process for payment disputes. A subcontractor may serve a payment claim and, if not paid, may apply for adjudication or suspend work.
What is a supporting statement and when is it required?
At our firm, we help subcontractors prepare proper supporting statements. A supporting statement is a statutory declaration that must accompany payment claims under the BIF Act for certain projects, detailing the construction work carried out and the amount claimed.
How do project bank accounts protect subcontractors?
At our firm, we help head contractors and subcontractors comply with project bank account (PBA) requirements. PBAs under the BIF Act require project funds to be held in trust for the benefit of subcontractors and suppliers. PBAs are mandatory for government projects over million and private projects over million. Funds in a PBA are protected from the head contractor insolvency.
What are my rights regarding retention sums in Queensland?
Under the BIF Act, our team advises that retention sums withheld by a head contractor from subcontractors must be held on trust. The contractor must hold retention money in a separate trust account. The maximum retention is typically 5% of the contract value.
Can a subcontractor lodge a lien in Queensland?
At our firm, we help subcontractors use the statutory protections available in Queensland. Queensland does not have a common law lien system for subcontractors. Instead, subcontractors' rights are protected through the BIF Act (payment claims and adjudication), QBCC complaint mechanisms, and project bank accounts. Subcontractors may also issue statutory demands under the Corporations Act.
Subcontractor & Supplier Claims Services
- Subcontractors' charges under the Subcontractors' Charges Act 1974 (Qld)
- BIF Act payment claims down the contractual chain
- Supporting statement preparation and compliance
- Project bank account advice and claims
- Security of payment adjudication for subcontractors
- Notice of intention to suspend work services
- QBCC complaints for unpaid subcontractor amounts
- Head contractor insolvency advice and protection
- Back-to-back contract review for subcontractors
- Supplier payment claims for materials provided
- Retention sum recovery and trust claims
- Direct payment claims against principals
Last updated: July 2026
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