Contract Variation

What is a Contract Variation?

A contract variation is a formal change to an existing government contract. Variations modify the original agreement — whether that means adding or removing scope, adjusting pricing, extending timeframes, or changing deliverables. In Australian government procurement, variations must be properly documented and approved through the agency’s governance processes.

When Do Contract Variations Occur?

Variations arise for many reasons during the life of a government contract:

• Scope changes — the agency identifies additional work not covered in the original Scope of Works, or determines that some planned work is no longer required
• Time extensions — the project timeline needs adjustment due to unforeseen circumstances, design changes, or agency-caused delays
• Price adjustments — changes in scope, quantities, or market conditions that affect the contract price
• Personnel changes — replacement of key personnel named in the contract
• Technical changes — revised specifications or updated standards that affect deliverables

How Does the Variation Process Work?

1. Identification — either party identifies the need for a change
2. Proposal — a formal variation proposal is prepared, detailing the change, its impact on scope, time, and cost
3. Assessment — the agency assesses the proposal for reasonableness and value for money
4. Approval — an authorised officer with appropriate delegation approves the variation
5. Documentation — a formal variation document is executed by both parties, becoming part of the contract

Rules and Limitations

Australian procurement frameworks impose limits on contract variations:

• Variations should not fundamentally change the nature of the original contract
• The Commonwealth Procurement Rules require that variations represent Value for Money
• Significant variations may trigger requirements to report on AusTender or equivalent portals
• Agencies must ensure variations do not circumvent the competitive process that was used to award the original contract

Tips for Suppliers

• Document everything — keep detailed records of any instructions, changes, or events that may give rise to a variation.
• Raise variations promptly — do not wait until the end of a project to claim for additional work.
• Price variations transparently — use the rates and methodologies from the original contract where possible.
• Get written approval before commencing varied work — verbal agreements are difficult to enforce.