Glossary term

Cluster B · B2

Tier 1

Group 1 entity

Definition

A Group 1 entity is in the first cohort captured by Australia’s mandatory climate reporting regime and reports for annual reporting periods commencing on or after 1 January 2025. An entity is Group 1 if it meets two of three thresholds: consolidated revenue of $500 million or more, consolidated gross assets of $1 billion or more, or 500 or more employees.

Corporations Act 2001

· section 292A ·

In force

In practice

The size test is not the only route into Group 1. An entity registered under the National Greenhouse and Energy Reporting Act that is above the publication threshold in section 13(1)(a) of that Act is Group 1 regardless of its revenue, assets or headcount. That catches emissions-intensive operations that are not large in financial terms.

The gateway condition is often missed. Section 292A only applies to an entity that is already required to prepare a financial report under Chapter 2M. If you do not lodge a financial report, you do not lodge a sustainability report, however large you are.

What the assurer does with it

Group determination sits in engagement acceptance, because under ASSA 5010 the reporting year counted from the entity’s own first reporting period sets what is assured and at what level. The assurer asks for the threshold calculation agreed to the audited consolidated financial statements, and separately asks whether the entity or any controlled entity is a registered NGER corporation. They reject a Group 1 determination reached on the size test alone where a NGER registration exists and has not been assessed against the section 13(1)(a) publication threshold.

Timing and relief

For a 30 June year end, a Group 1 entity’s first reporting period is the year commencing 1 July 2025 and ending 30 June 2026. For a 31 December year end, it is the year ended 31 December 2025.

Sources

1

Corporations Act 2001 (Cth)

Federal Register of Legislation

2

Who must prepare a sustainability report?

ASIC

3

National Greenhouse and Energy Reporting Act 2007 (Cth)

Federal Register of Legislation

4

ASSA 5010 Timeline for Audits and Reviews of Information in Sustainability Reports under the Corporations Act 2001

AUASB

Review status

Review required

Last reviewed

15 September 2026

Editorial pass, unsigned

Reviewer required

Corporate lawyer or registered company auditor

Next scheduled review

1 July 2027

Part of

Cluster B, Regulation, capture and thresholds / Regulation, capture and timing

26 terms on who has to report, when their first report is due, and what the regime is built on.