ATO Objection (Disputing an Australian Taxation Office Decision)

An ATO objection is the formal document by which a taxpayer disputes a decision made by the Australian Taxation Office — typically a tax assessment, amended assessment, or private ruling. Under Part IVC of the Taxation Administration Act 1953, you generally have between 60 days and 4 years to lodge an objection (depending on the type of decision) and the ATO must consider it before any further appeal pathway opens (AAT or Federal Court).

Why this document matters

A well-drafted ATO objection is the cheapest way to overturn a wrong tax decision. The cost of getting it wrong is having to pursue a much more expensive AAT appeal — which still requires you to have lodged an objection first.

How Claim Done can help

ATO objections require specialist tax-law analysis of your specific assessment and supporting evidence. Claim Done doesn’t offer flat-fee ATO objections; this is best handled by a tax agent or tax lawyer (typically $500–$3,000). If your dispute is actually about a debt the ATO claims you owe — and you’ve already objected and lost — our Letter of Demand ($79) can be used as the precursor to an AAT application disputing the actual debt amount.

Start your Letter of Demand ($79) →

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