Ways to keep the tax man at arm's length
In truth, the taxman never knocks unannounced. Business owners will be aware in advance if the Tax Office is on their case. It might start with a letter to "check" that tax forms have been lodged correctly, inviting the business to make voluntary disclosures.
If the Tax Office isn't satisfied with the response, it will let the business know it is under review.
This is not an audit, just a demand for further information. If the ATO is still dissatisfied after a review, the owner will be told the business is being audited.
Simon Le Maistre, a KPMG director of private enterprise and former Tax Office official, describes the process as a funnel. "They'll select a certain amount of taxpayers to be reviewed. They'll ask questions, but of all those reviewed, perhaps only about 20 per cent move to full audit."
The best way to deal with an audit threat is never to allow the tax man to get past the review stage. It is not only the quality of information that will determine the extent of inquiries, it is also the quality and tenor of the response.
Elenie Ferrier, a director at Sydney accountancy firm Masselos Grahame Masselos, says any request for information should be answered with a courtesy call back to the ATO.
"Start off on a good foot, then compile the information they need in a clear and logical fashion, which they can follow easily," she says.
"Don't be scared to provide them with more information than they have requested. The more compliant you are, the more likely they will look at you favourably."
John Brazzale, a managing partner at Pitcher Partners in Melbourne, says: "Your adviser should be involved as early as possible, dealing with the ATO's timeline. Make sure what he is doing does not disrupt your business."
Mr Le Maistre says if you are perceived to be efficient and correct, the ATO will quickly move on. "Hand over information quickly and you'll be seen to be low risk. If you've made a mistake, make a voluntary disclosure - almost certainly it will reduce penalties," he says.
Many business are targeted because they do not fit the ATO's benchmarks or "norms". Frank Brass, regional director of tax consultants H&R Block, says audit targets for the year ahead are always clearly foreshadowed in Tax Office guidance. Mr Brazzale says often it is anomalies such as why taxable income doesn't square with the accounting profit.
Ms Ferrier cites the relationship between costs and turnover. It may be items such as motor vehicle expense claims relative to turnover. "There might be a percentage of turnover the ATO would normally apply to rent, and anything outside of that may be questionable," she says.
Mr Le Maistre says low income tax rates ring the loudest alarm bells. "Other notables might be a large capital gains tax incident or a number of large international transactions," he says.
Frequently Asked Questions about this Article…
An ATO review is an initial request for more information to check that your tax forms and records are correct — it’s not a full audit. The Tax Office will ask questions and assess responses, and only a smaller portion of reviewed cases progress to a full audit. As KPMG director Simon Le Maistre describes it, the process works like a funnel: many are reviewed, but only about 20% may move to a full audit.
No — the Tax Office does not typically turn up unannounced. Businesses are usually informed in advance, often starting with a letter asking you to check lodgements or inviting voluntary disclosures before any review or audit is opened.
Start with a courtesy call to the ATO, then compile the requested information in a clear, logical way they can follow. Be proactive: provide the information promptly and consider supplying more detail than asked for to show compliance and cooperation, which can help your case.
Yes. If you’ve made a mistake, making a voluntary disclosure to the ATO is likely to reduce penalties. Acting quickly and being open about errors signals lower risk and can lead to more favourable treatment.
The ATO often targets businesses that don’t fit established benchmarks or norms. Common triggers include taxable income that doesn’t match accounting profit, unusually high motor vehicle or other expense claims relative to turnover, rent or cost ratios outside typical percentages, very low reported income tax rates, large capital gains events, or significant international transactions.
Yes. Involve your adviser as early as possible so they can manage the ATO’s timeline and liaise on your behalf. Your adviser should act in a way that complies with the ATO’s requests while minimising disruption to your business operations.
Be efficient and responsive: hand over information quickly, be clear and organised in your responses, and demonstrate compliance. The quality and tone of your replies matter — a fast, cooperative approach makes you look low risk and reduces the chance of escalation.
The ATO foreshadows audit targets and areas of focus in its public guidance. Watching the Tax Office’s guidance and benchmarking information can help you spot potential risks and address anomalies before they attract scrutiny.

