ATO & Tax Law — All States & Territories
ATO & Tax Lawyers — Protect Your Position. Resolve the Dispute.
Whether the ATO has issued an amended assessment, audit, director penalty notice, statutory demand, or fraud and evasion allegation, the window to respond is narrow and the consequences of inaction are severe. A tax lawyer protects your rights, navigates the objection and appeal process, and negotiates with the ATO on your behalf. Get connected with an ATO and tax lawyer for a free urgent consultation today.
⚠ Director penalty notices require a response within 21 days. ATO objections must generally be lodged within 60 days of the disputed assessment. ATO statutory demands must be responded to within 21 days or the company is deemed insolvent. Get urgent legal advice today.
ATO & Tax Law Practice Areas
Every ATO dispute and tax law matter — audit to Federal Court.
Select the ATO or tax issue that matches your situation. Each page explains the legal framework, the process, and the critical deadlines that apply to your specific type of dispute.
ATO Audit Defence
An ATO audit — whether a review, audit, or tax office investigation — requires careful management from the first information request. A tax lawyer manages the process, protects your rights, and prevents unnecessary disclosures that can expand the scope of the audit.
Get ATO audit help →Amended Assessment Disputes
When the ATO issues an amended assessment — raising additional tax, penalties, and interest — the amount must be paid or disputed within strict time limits. A lawyer challenges amended assessments through the objection process, the AAT, or the Federal Court.
Get amended assessment help →ATO Objections & Appeals
A formal objection under Part IVC of the Tax Administration Act 1953 is the first step to challenging an ATO decision. A lawyer prepares a compelling objection, manages the review process, and pursues the matter to the AAT or Federal Court if the objection is disallowed.
Get objection & appeal help →Director Penalty Notices
A director penalty notice (DPN) makes directors personally liable for a company's unpaid PAYG withholding, superannuation guarantee charge, and GST. Directors have only 21 days to respond before personal liability is locked in. Urgent legal advice is essential.
Get DPN help →ATO Debt & Payment Plans
ATO tax debts accrue general interest charge (GIC) at a high rate. When a payment arrangement breaks down or becomes unmanageable, a lawyer negotiates with the ATO for a sustainable payment plan, interest remission, and penalty remission — avoiding statutory demands and wind-up action.
Get ATO debt help →GST & BAS Disputes
GST disputes — including input tax credit disallowance, taxable supply classification, and unreported GST — can result in significant assessments, penalties, and GIC. A tax lawyer challenges ATO GST decisions through the objection and appeal process and manages GST audits.
Get GST & BAS help →Tax Litigation — AAT & Federal Court
When an ATO objection is disallowed, the taxpayer can pursue the matter to the Administrative Appeals Tribunal or the Federal Court. Tax litigation requires specialist knowledge of both tax law and administrative law procedure. A tax lawyer manages the proceedings from objection through to hearing.
Get tax litigation help →ATO Fraud & Evasion Allegations
ATO fraud and evasion allegations carry severe consequences — unlimited amendment periods, penalties of up to 75% of the tax shortfall, and criminal prosecution. A tax lawyer responds to fraud and evasion allegations, manages voluntary disclosure to minimise penalties, and defends criminal proceedings.
Get fraud & evasion help →Why ATO Legal Advice Matters
The ATO has broad powers — and most taxpayers don't know their rights.
The ATO is the most powerful creditor in Australia. It has access to third-party data, can issue assessments without lodged returns, and can make directors personally liable for company tax debts. Understanding your rights — and acting within the time limits — is essential.
Pay first, argue later — the ATO's collection power
A fundamental principle of Australian tax law is "pay first, argue later" — once an assessment is issued, the tax is due and payable even if you dispute it. Failure to pay (or obtain a stay) while disputing can result in the ATO pursuing enforcement action — including statutory demands, garnishee orders on bank accounts, and wind-up applications — while the dispute is still on foot. A lawyer can apply for a stay of collection in appropriate cases, but this requires urgent action and a strong legal basis. Understanding the collection timeline is critical to managing ATO disputes effectively.
Director penalty notices — personal liability for company tax debts
Since 2012, the ATO has had broad powers to make company directors personally liable for unpaid PAYG withholding, superannuation guarantee charge (SGC), and GST through director penalty notices (DPNs). There are two types of DPN — those where the director can avoid personal liability by appointing an administrator or liquidator within 21 days, and "lockdown" DPNs where personal liability cannot be avoided regardless of what the director does. Whether a DPN is a lockdown DPN depends on whether the company lodged its BAS, IAS, and SGC statements on time. Directors who receive a DPN must take immediate legal advice — the 21-day window is not negotiable.
The objection time limit — 60 days that matters
A taxpayer who wishes to challenge an ATO assessment or decision must lodge a formal objection within 60 days of the date of the assessment or decision (or 4 years from the date of the relevant assessment, in some cases for income tax). The objection must be in writing, state the grounds in full, and be lodged with the ATO Commissioner. An objection lodged out of time requires a separate application for an extension — which the ATO may refuse. If the objection is disallowed (in whole or in part), the taxpayer has 60 days to elect to have the matter reviewed by the AAT or appeal to the Federal Court. Missing these deadlines can permanently bar a meritorious challenge.
GIC and penalties — the cost of delay
The general interest charge (GIC) that accrues on unpaid ATO debts compounds daily at a rate set by the ATO each quarter (currently around 11% per annum). Shortfall penalties — which apply where a tax assessment is amended because the taxpayer took an incorrect position — range from 25% of the shortfall amount (for failure to take reasonable care) to 75% of the shortfall amount (for intentional disregard of the law or tax fraud). These penalties can themselves be subject to a separate remission application. A tax lawyer identifies whether penalties and GIC are properly imposed and pursues remission in appropriate cases — significantly reducing the overall liability.
ATO information powers — what you must and need not disclose
The ATO has broad powers under s353-10 of Schedule 1 to the Tax Administration Act 1953 to require a person to attend and give evidence, produce documents, and answer questions. These powers are extensive — but they are not unlimited. Legal professional privilege protects confidential communications between a lawyer and their client from compulsory disclosure. The ATO cannot compel production of privileged documents. Understanding what is and is not required to be disclosed — and what is protected by privilege — is critical to managing an audit effectively. A tax lawyer manages the information-gathering process, asserts privilege where appropriate, and ensures the audit does not expand beyond its proper scope.
ATO fraud and evasion — the consequences of inaction
Where the ATO forms the view that a taxpayer has engaged in fraud or evasion, there is no time limit on the ATO's power to amend assessments — it can go back unlimited years. Shortfall penalties for fraud are 75% of the shortfall, with no cap. Where the ATO refers a matter to the Commonwealth Director of Public Prosecutions (CDPP), criminal prosecution for tax evasion (s8T TAA 1953) can result in imprisonment of up to 2 years per offence. Voluntary disclosure — made before the ATO commences an audit or investigation — can reduce penalties to as little as 5% of the shortfall and significantly reduces the risk of criminal prosecution. A tax lawyer who is engaged early can manage the voluntary disclosure process and achieve the best possible outcome.
How It Works
One request. A free ATO & tax law consultation.
Tell us the nature of your ATO dispute — audit, amended assessment, director penalty notice, payment arrangement, or fraud allegation — and any deadlines that apply. A tax lawyer will contact you urgently.
Submit Your RequestDescribe your ATO matter
Tell us the type of ATO dispute (audit, amended assessment, DPN, statutory demand, fraud allegation), any letters or notices you have received, and the deadlines that apply. Include your state and whether the matter is for an individual, company, or trust.
Matched to a tax lawyer
Your request is matched to a tax lawyer experienced in your specific type of ATO dispute — whether that is an audit defence, objection and appeal, director penalty notice, or tax litigation in the AAT or Federal Court.
Free urgent consultation
A tax lawyer contacts you for a free, confidential consultation — identifying the deadlines that apply, advising on your legal position, and providing a clear strategy and cost estimate for resolving the dispute.
About ATO & Tax Law in Australia
The Part IVC process — how Australian tax disputes are resolved.
Australian tax law is primarily governed by federal legislation — the Income Tax Assessment Act 1936 (ITAA 1936), the Income Tax Assessment Act 1997 (ITAA 1997), the Tax Administration Act 1953 (TAA 1953), the A New Tax System (Goods and Services Tax) Act 1999 (GST Act), and the Superannuation Guarantee (Administration) Act 1992. The Australian Taxation Office (ATO) administers these Acts and has broad powers of assessment, audit, and collection under the TAA 1953.
The formal process for disputing an ATO decision is set out in Part IVC of the TAA 1953. A taxpayer who is dissatisfied with an assessment or other reviewable decision of the Commissioner must first lodge a written objection with the Commissioner. The objection must be lodged within the relevant time limit (generally 60 days for individuals, 4 years from the assessment for income tax in some cases). The Commissioner then makes a decision on the objection — either allowing it (in whole or in part) or disallowing it. If the objection is disallowed, the taxpayer can elect to have the matter reviewed by the Administrative Appeals Tribunal (AAT) or to appeal to the Federal Court of Australia.
The AAT provides a merits review of ATO decisions — the Tribunal stands in the shoes of the original decision maker and decides the matter afresh on the evidence. The Federal Court, by contrast, conducts a de novo appeal on questions of law and fact. In practice, the AAT is the more commonly used forum for tax disputes — it is less formal than the Federal Court and allows the taxpayer to present new evidence. Decisions of the AAT on questions of law can be appealed to the Federal Court (and beyond to the Full Federal Court and High Court in appropriate cases).
The ATO's audit and compliance program targets a range of taxpayers — from individuals with rental property deductions to large corporations with complex international structures. Common audit triggers include: unusually high deductions relative to income; discrepancies between tax returns and third-party data (including bank data, property data, and Single Touch Payroll data); involvement in known tax avoidance schemes; cash economy businesses; and referrals from informants. When the ATO commences an audit, it sends a formal notification letter and may follow up with information requests under s353-10 TAA 1953.
Shortfall penalties under Subdivision 284-B ITAA 1997 are imposed where a tax assessment is amended because the taxpayer's position was incorrect. The base penalty amount depends on the taxpayer's culpability — 25% for failure to take reasonable care, 50% for recklessness, and 75% for intentional disregard of the law or fraud. These base amounts can be reduced by voluntary disclosure (before or after the audit commences) and by the taxpayer's cooperation with the ATO. A tax lawyer prepares detailed penalty remission submissions that identify mitigating factors and seek the lowest possible penalty.
The ATO is subject to a model litigant obligation — a whole-of-government policy that requires Commonwealth agencies to act honestly, consistently, and fairly in litigation, and to avoid unnecessary legal costs. In practice, this means the ATO is required to consider settlement offers in appropriate cases, not to pursue unmeritorious positions, and to concede issues that are clearly decided against it. A tax lawyer who understands the model litigant obligation can use it to achieve better settlement outcomes and to hold the ATO to its obligations in litigation.