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Nobody wants a letter from the ATO. But in 2026, the chances of receiving one are higher than ever — because the ATO has been given almost $1 billion in additional funding specifically to increase compliance activity targeting small businesses through to 2029.
Combined with new data-matching technology that can cross-check your income, BAS, bank deposits, and payroll data in near real-time, the ATO is more capable of spotting discrepancies than at any point in Australian tax history.
The good news: most audits are avoidable. Here is exactly what triggers ATO scrutiny in 2026 — and how to make sure your business is not on the list.
The ATO’s compliance focus in 2026 is squarely on small and medium businesses. According to the Australian National Audit Office, 92% of businesses audited by the ATO for unpaid superannuation had a turnover of less than $10 million. The ATO has made no secret of its 2026 priorities:
The ATO’s data-matching capability now connects your tax return, BAS, bank records, payroll reports, property transactions, and even third-party platforms like eBay, Airbnb, and online payment systems. If something does not add up, the system flags it automatically.
This is the number one trigger. If your reported income is significantly lower than the deposits going into your business bank account, the ATO’s automated system will flag it. Every dollar of income — including cash — must be declared.
The ATO cross-checks your BAS GST credits against supplier data. If you are claiming GST on purchases that suppliers have not reported, or if your GST credits seem disproportionate to your industry, it raises questions.
A business that reports losses for multiple years in a row — especially while the owner’s personal lifestyle appears comfortable — is a common audit trigger. The ATO questions whether the business is genuinely commercial or being used to generate deductions.
The ATO benchmarks businesses against industry averages. If your deductions for vehicles, travel, or meals are significantly higher than similar businesses in your sector, you will be noticed. Check the ATO’s Small Business Benchmarks to see where your business sits.
Claiming that a car, phone, or laptop is used 100% for business is a major red flag — unless you have a second vehicle or device for personal use. The ATO expects most assets to have some private use component and scrutinises claims of total business use heavily.
Businesses that consistently lodge BAS late — or not at all — signal poor record-keeping and are more likely to be selected for a review. Timely lodgement is one of the simplest ways to stay off the ATO’s radar.
With Payday Super starting 1 July 2026, the ATO will have real-time visibility of every super payment. If your Single Touch Payroll (STP) data shows wages paid but super contributions do not follow, penalties will be applied quickly.
Hospitality, retail, cleaning, and construction businesses that deal heavily in cash are under heightened scrutiny in 2026. The ATO uses data modelling to estimate expected income based on your industry, size, and location — and will investigate if your reported figures fall well below expectations.
An ATO audit or review can range from a simple letter requesting clarification to a full examination of your books going back five years. The process can be time-consuming, stressful, and expensive — even if you have done nothing wrong.
Common outcomes of an audit include:
You do not need to be doing anything wrong to be selected for an audit — but you do need clean records to defend yourself if it happens. Here is how to reduce your risk:
Keep records throughout the year, not just at EOFY The ATO requires records to be kept for five years. That means every tax invoice, receipt, logbook, and contract. Use cloud accounting software (Xero or MYOB) to store and categorise everything automatically.
Reconcile your bank accounts monthly Unreconciled bank transactions create gaps that look suspicious. Monthly reconciliation catches errors before they become problems.
Be accurate about business vs personal use If your car is 70% business use, claim 70% — not 100%. Document it with a logbook. The ATO accepts reasonable claims with proper substantiation; it rejects inflated ones regardless of documentation.
Lodge everything on time BAS, tax returns, STP reports, and super payments — all on time, every time. Consistent on-time lodgement is one of the strongest signals of a well-run business.
Use a registered tax agent A registered tax agent does not just save you time — they are accountable to the ATO and follow professional standards. Working with one demonstrates good faith and significantly reduces your audit risk profile.
Review the ATO benchmarks for your industry The ATO publishes benchmarks showing typical income and expense ratios for different industries. If your business is outside those ranges, be prepared to explain why — or review whether your records accurately reflect your actual activity.
If you are heading into EOFY 2026 with messy books, unreconciled accounts, or uncertainty about your BAS or super obligations — now is the time to fix it, not after you receive a letter from the ATO.
At Procura Global, we work with Melbourne small businesses to get their accounts clean, their obligations current, and their records audit-ready before June 30. Whether you need a one-off review or ongoing accounting and compliance support, our team is here to help.
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