How do I object to an ATO decision?

Common question · Tax Law · Australia · 23 October 2026

General information from Lawmateanz

If you disagree with a tax assessment or certain other decisions from the Australian Taxation Office, you can lodge an objection.

For most individuals and small businesses, you generally have two years from the notice of assessment to object, while others may have four years. Late objections can sometimes be accepted.

If the objection is disallowed, you can seek review at the Administrative Review Tribunal or appeal to the Federal Court.

A tax agent or tax lawyer can help prepare an objection.

Written by Lawmateanz, not by a lawyer. General information only, not legal advice about your situation. For advice about your own matter, talk to a lawyer.

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