Registration for 2025–26 is now open for the period 1 September 2025 to 31 August 2026.

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Help and guides

Browse our online guides and tools for information about registering your business, how to categorise your introduction, and other help to meet your obligations.

Temporary call out: SIR

NEW! Changes to specific information requirement (SIR) guidance

We recently published a variation of Inventory listings that includes more SIR details for NICNAS-assessed chemicals. These changes are part of our commitment to make it easier for you to comply with SIR obligations.

In line with the changes, we also announced updates to our SIR guidance with new guides to help you complete your SIR forms. Read our new SIR help guides to learn more.

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Browse our top enquiries, learn the basics about complying with our regulation and access our registration hub.

Guides on specific information requirement

Categorisation Guide and decision tools

Extra categorisation help

Reporting and record-keeping obligations

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