What is the ATO?

Claudia AinsleyWritten byClaudia Ainsley
Reviewed byMatt Leeburn
Updated 09 Sept 2026

The ATO is the Australian Taxation Office, the national tax authority that collects income tax, GST and PAYG, administers superannuation rules, issues rulings and enforces compliance.

Also known as: Australian Taxation Office, tax office, Australian tax office

Key points

  • The Commissioner of Taxation runs it under laws such as the Taxation Administration Act and the Income Tax Assessment Acts.
  • It processes tax returns, activity statements (BAS) and business registrations through myGov and ATO online services.
  • Its public rulings decide how tax law applies in practice, including how depreciation and GST credits on a financed asset are claimed.
  • Enforcement is progressive: education first, then penalties and interest charges, then garnishee notices, director penalty notices and court action.
  • It shares data with ASIC, banks and other agencies to run data-matching programs and pick audit targets.

What the ATO does

Compliance and enforcement powers

Your obligations and record keeping

Disputes, payment arrangements and getting help

Example

Not to be confused with

ASIC
ASIC registers companies and regulates financial services and credit; the ATO collects tax and administers GST, PAYG and super
AUSTRAC
AUSTRAC collects financial transaction reports to fight money laundering; the ATO collects tax, and the two agencies share intelligence

Frequently asked questions

What does ATO stand for?

ATO stands for the Australian Taxation Office, the federal government agency that administers Australia's tax system. It collects income tax, GST, PAYG and other federal taxes, oversees superannuation compliance, issues rulings on how tax law applies and runs the online services that individuals, businesses and tax agents use to lodge and pay.

What happens if I lodge my BAS or tax return late?

Late lodgment can attract a failure-to-lodge penalty, and any unpaid tax accrues the general interest charge until it is paid. The ATO usually starts with reminders, but ongoing non-lodgment can escalate to default assessments, garnishee notices or legal action. Lodging as soon as possible and contacting the ATO about payment limits the damage.

Can the ATO make directors personally liable for company tax debts?

Yes. Through a director penalty notice, the ATO can hold company directors personally liable for the company's unpaid PAYG withholding, GST and superannuation guarantee amounts. The notice sets a deadline for action, so directors who receive one need to respond quickly and get independent advice.

How do I dispute an ATO decision?

Lodge a written objection with the ATO within the statutory time limit, attaching your evidence. If the objection decision goes against you, you can apply for independent merits review at the federal administrative review tribunal, and questions of law can go to the Federal Court. A registered tax agent can help you prepare and lodge the objection.

How do I link the ATO to myGov?

Sign in to myGov, choose "Link a service", select the Australian Taxation Office and complete the identity checks. Once linked you can lodge returns and activity statements, check your accounts, receive electronic notices and manage payment arrangements online. The official myGov help pages walk through the steps.

Go deeper

Sources

This article is general information only and is not financial advice.