ASIC deregistration and ATO cancellations cover the federal side of closing a business — state-based registrations are a separate, easily forgotten checklist of their own, and requirements vary by state.

Payroll tax

If the business (or a group it was part of) was registered for payroll tax in any state, that registration needs to be cancelled separately with the relevant state revenue office, along with lodging a final return for the period up to closure. This is state-specific — check the requirements with the revenue office in whichever state(s) the business was registered in.

Workers compensation insurance

If the business had employees, workers compensation insurance is compulsory in every state and needs to be formally cancelled once there are no more employees — most insurers require a final wage declaration for the policy period, which affects the final premium (a refund or a top-up payment, depending on how the estimate tracked against actuals).

Other state-based licences and registrations

Depending on the industry, there may be state-issued licences, permits, or registrations tied to the business — trade licences, liquor licences, environmental permits, and similar. These typically need to be actively surrendered or cancelled; most don't lapse automatically just because the underlying business has stopped trading, and some carry ongoing obligations (or fees) until they're formally closed out.

Why this is easy to miss

None of these are checked by ASIC when you lodge Form 6010, and none of them are checked by the ATO when you finalise tax obligations — they're genuinely separate systems, which is exactly why they're the loose ends that surface as a surprise bill or compliance letter long after you thought everything was closed.

A practical approach

Make a specific list of every state-based registration or licence the business held, and work through cancelling each one directly with the relevant state authority — there's no single federal step that covers this for you.

This is general information, not legal advice — check the specific requirements with each state authority the business was registered with.