The ATO continues to increase data matching, compliance monitoring and audit activity across Australia.
And in 2026, they are watching more closely than ever.
Many audits do not start because of massive fraud.
They start because something simply does not look right.
Here are some of the most common red flags we are seeing.
- Unrealistic Motor Vehicle Claims
Vehicle claims continue to attract attention.
Common issues include:
- Claiming 100% business use without evidence
- Poor logbooks
- Private expenses claimed through the business
- Luxury vehicle claims that do not match income levels
The ATO is increasingly reviewing motor vehicle deductions closely.
- Late Super Payments
Late super remains a major focus area.
Many businesses underestimate:
- Penalties
- Interest charges
- Administrative costs
With Payday Super approaching, scrutiny in this area is expected to increase further.
- Rental Property Errors
Rental property claims are one of the ATO’s biggest compliance targets.
Common mistakes include:
- Claiming renovations incorrectly
- Incorrect interest apportionment
- Missing private usage adjustments
- Incorrect depreciation claims
The ATO already receives significant data from banks, property managers and government agencies.
- Director Loan Accounts
Director loan accounts continue to create issues for small businesses.
Problems often arise when:
- Personal expenses are paid from company accounts
- Loan agreements are missing
- Minimum repayments are not made
- Business and personal spending become mixed
These situations can create unexpected tax consequences.
- GST Reporting Errors
The ATO’s systems are becoming increasingly sophisticated at identifying unusual GST activity.
Red flags can include:
- Large fluctuations in GST claims
- Repeated BAS revisions
- Inconsistent reporting patterns
- Significant refunds without clear explanation
Accurate bookkeeping matters more than ever.
- Crypto Transactions
Cryptocurrency reporting continues to expand.
The ATO now receives extensive information from crypto platforms and exchanges.
Many taxpayers incorrectly assume crypto activity is invisible.
It is not.
- AI Generated Bookkeeping Mistakes
As AI tools become more common, we are also seeing more bookkeeping errors created by automation and incorrect categorisation.
Technology can improve efficiency, but it still requires human review.
Incorrect data leads to incorrect reporting.
Final Thoughts
Most ATO problems begin with poor systems, weak record keeping or simple misunderstandings.
The businesses and individuals who stay organised, proactive and transparent usually place themselves in the strongest position.
Good bookkeeping and early advice are often the best audit protection available.