Payment Terms - Cost Plus Payment Claim Best Practices | Contracts Administrator

Payment Terms in Cost Plus Payment Claims

📅 Updated: August 2025 ⏱️ 8 min read 📋 Cost Plus Payment Claim Best Practices

⚠️ Compliance Warning

Incorrectly stating payment terms can lead to uncertainty about payment due dates, difficulty enforcing your rights, and potential disputes over late payment interest.

1. Field Name and Definition

Payment Terms refers to the agreed timeframe and conditions for payment of amounts claimed in a Cost Plus Payment Claim under a construction contract in NSW. This field specifies the number of days within which payment must be made after a payment claim is served, along with any specific payment methods or requirements outlined in the contract.

The Payment Terms field appears on a Cost Plus Payment Claim because it establishes the contractual deadline for payment, which is crucial for determining when payment becomes due and payable. This information is essential for enforcing payment rights under the Building and Construction Industry Security of Payment Act 1999 (NSW) (the Act) and calculating when late payment consequences may apply.

3. Practical Guidance

Step-by-Step Instructions

  1. Review Your Contract: Locate the payment provisions in your construction contract that specify payment timeframes. This is often in a clause titled "Payment" or "Terms of Payment".
  2. Identify the Correct Terms: Note the specific number of days for payment after a claim is submitted. For Cost Plus contracts, this is typically expressed as "X days from submission of claim."
  3. Check for Special Requirements: Note any specific payment methods (e.g., electronic transfer), approval processes, or documentation requirements.
  4. Enter the Information: In the Payment Terms field of your claim, enter the number of days (e.g., "14 days", "30 days") and include any specific methods if relevant.
  5. Verify Against the Act: Ensure the payment terms comply with the minimum requirements of the Act. Remember that the Act may impose shorter maximum timeframes than your contract, especially for subcontractors.

Where to Find This Information

  • The "Payment" or "Terms of Payment" clause in your written construction contract.
  • Special conditions or schedules attached to the contract.
  • The contract's preliminaries section.
  • Relevant Australian Standard form contract terms (if incorporated by reference).

4. Common Mistakes and How to Avoid Them

Using Vague or Ambiguous Terms

Error: Writing "as per contract" without specifying the actual terms. This creates ambiguity and can lead to disputes.

Solution: Always state the specific timeframe clearly, e.g., "14 days from receipt of claim".

Contradicting the Contract or the Act

Error: Stating payment terms that differ from the contract or including "pay when paid" provisions, which are void under the Act.

Solution: Ensure the stated terms are a true reflection of the contract and are compliant with the Security of Payment Act.

Omitting Special Requirements

Error: Failing to include specific payment methods or documentation requirements that are part of the agreed terms.

Solution: Concisely include all relevant details, e.g., "21 days via electronic transfer to nominated account".

Best Practices to Ensure Accuracy

  • Always refer to the original signed contract when determining payment terms.
  • Clearly specify the number of days and when the period begins.
  • Include specific payment methods if stipulated in the contract.
  • Keep terms consistent across all payment claims for the same project.

5. Risks of Not Including This Information

Failing to clearly and correctly state the payment terms exposes you to significant legal, financial, and dispute-related risks that can undermine your cash flow and contract administration.

Risk Type Impact Consequence
Legal Risks Uncertainty of due date Delays enforcement and makes it hard to prove entitlement to interest.
Financial Risks Delayed payments Cash flow disruption and loss of interest on late payments.
Dispute Risks Increased arguments Disputes over when payment was due and when suspension rights can be exercised.
Adjudication Risks Weakened position Respondent may use ambiguity to argue for a later payment due date.

6. Examples

Example 1: Standard Cost Plus Contract

✅ Correct Format:

Payment Terms: 14 days from receipt of payment claim

Example 2: With Payment Method Specified

✅ Correct Format:

Payment Terms: 21 days from receipt of payment claim via electronic transfer to nominated account

Example 3: With Reference to Contract Clause

✅ Correct Format:

Payment Terms: 30 days from receipt of payment claim (as per clause 12.3 of the Contract)

8. Frequently Asked Questions

Q: Can payment terms in my contract be shorter than those specified in the Security of Payment Act?
A: Yes. The Act establishes maximum timeframes for payment, but contracts can specify shorter payment periods. If your contract states payment is due in 7 days, this shorter timeframe applies.
Q: What happens if my contract contains a "pay when paid" provision?
A: "Pay when paid" provisions are void under Section 12 of the Security of Payment Act. Even if such terms appear in your contract, they cannot be enforced, and you should not include them in your payment terms field. Standard statutory payment timeframes will apply instead.
Q: Can I change payment terms during a project?
A: Yes, but only by mutual agreement in writing. Any variation should be clearly documented and reflected in subsequent payment claims. Without formal agreement, the original contract payment terms continue to apply.
Q: What if my contract doesn't specify payment terms?
A: If your contract is silent on payment terms, the Security of Payment Act's default provisions apply. For a head contractor, payment becomes due 15 business days after a payment claim is made. For subcontractors, different statutory timeframes apply.
Q: Do payment terms apply to variations in a Cost Plus contract?
A: Yes. The same payment terms that apply to the original scope of work also apply to variations, unless your contract specifically states otherwise for variations. This is particularly important in Cost Plus contracts where variations are common.

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