The ATO Is Not Looking Away
If your business handles a lot of cash, now is the time to pay close attention. The Australian Taxation Office (ATO) has made it very clear that it is actively targeting businesses that use cash to avoid their tax, employer, and business obligations. This is not a vague warning. The ATO has dedicated compliance teams, joint government agency operations, and sophisticated data-matching tools specifically aimed at uncovering cash-based non-compliance.
The message from the ATO is direct: keeping transactions off the books is not a mistake. It is a deliberate action, and one that carries serious financial and legal consequences.
What Exactly Is the ATO Targeting?
According to the ATO’s own Businesses Using Cash to Dodge Obligations page, the compliance focus is on businesses that are:
- Failing to report all sales transactions and failing to issue receipts
- Avoiding paying GST, income tax, PAYG withholding, superannuation guarantee, insurance, and work cover protection
- Reporting income below the $75,000 threshold to deliberately avoid registering for GST
- Exploiting workers by not meeting award conditions and work cover protections
- Undercutting honest businesses by offering lower prices for cash
Each of these behaviours represents a choice to operate outside the tax and regulatory system, and the ATO is increasingly equipped to detect all of them.
How Big Is the Problem?
The scale of the shadow economy in Australia is significant. According to the ATO’s shadow economy explained page, a 2016 government taskforce estimated the economic impact of the shadow economy to be as large as 3% of GDP, which equates to roughly $80 billion in today’s terms. More recent data from the ATO’s own tax gap program shows the tax impact of the shadow economy grew from 3.8% in 2017 to 5.4% in 2023, suggesting the problem has roughly doubled over the past decade.
This is why the ATO is not easing up. The resources being dedicated to shadow economy compliance are significant, with funding directed towards advanced analytics, cross-agency joint operations, and targeted industry visits.
How the ATO Detects Cash Non-Compliance
Many business owners assume that cash transactions are harder to trace. That assumption is increasingly wrong. The ATO uses a range of sophisticated tools, outlined on its cash and shadow economy page, to identify businesses that may not be meeting their obligations. These include:
Data matching: The ATO cross-references information from banks, payment platforms, third-party data providers, and government agencies. Even PayID payments and ATM transactions have been used as evidence in audits.
Industry benchmarks: The ATO publishes benchmarks for hundreds of industries. If your reported income falls significantly below what comparable businesses are earning, that discrepancy becomes a red flag.
Community tip-offs: The ATO receives a very high volume of reports each month through its Tax Integrity Centre. Competitors, customers, and former employees regularly report suspected cash economy behaviour. All tip-offs are treated as private, and reporters can remain anonymous.
Protecting honest business visits: The ATO conducts unannounced visits to businesses in high-risk industries, particularly those that advertise as cash-only or where data matching suggests limited electronic payment activity. Hospitality, construction, cleaning, and trades are among the sectors under the most scrutiny.
A Real-World Consequence: The Pizza Restaurant Case
The ATO has published a case study that illustrates exactly what can happen when a business relies on cash to stay off the radar. A pizza restaurant operated mostly on a cash-only basis, directing customers to an ATM at the shopfront to pay for orders. The business failed to keep accurate records and did not report all income.
After an initial audit in 2023 resulted in a 50% penalty for reckless behaviour, the business continued its practices. A second audit was triggered by a community tip-off for the 2024 income year. The ATO found approximately $140,000 in unreported income, along with approximately $80,000 in expenses claimed without adequate proof. The result included a GST shortfall exceeding $17,400, a shortfall penalty exceeding $38,000 for making false and misleading statements, and significant adjustments across income tax reporting.
This example makes clear that the ATO does follow up and that penalties escalate significantly when non-compliance continues after an initial warning.
What Happens to Workers Paid Cash-in-Hand?
The compliance issue is not only about the business. Workers who are paid cash-in-hand or are working off the books are often significantly disadvantaged. According to the ATO, these workers typically:
- Miss out on entitlements such as paid holiday and sick leave
- Do not receive superannuation contributions
- Are not covered by workers’ compensation
If a worker paid cash-in-hand is injured on the job, they may face substantial medical expenses with no insurance protection. This is why the ATO frames its cash economy crackdown not just as a revenue protection measure, but as a worker protection initiative as well.
Which Industries Are Under the Most Scrutiny?
While the ATO’s compliance activity covers all industries, certain sectors attract more attention due to their higher rates of cash transactions and historically lower compliance levels. These include:
- Hospitality (restaurants, cafes, bars)
- Building and construction
- Cleaning services
- Trades (plumbers, electricians, carpenters)
- Road freight and courier services
- Retail (particularly smaller independent stores)
If your business operates in any of these industries, the likelihood of an ATO visit, data review, or audit is meaningfully higher than in sectors with predominantly electronic payment records.
The ATO’s Joint Operations Approach
The ATO does not operate alone. Through its shadow economy action program, it coordinates joint operations with the Fair Work Ombudsman, the Department of Home Affairs, and other Commonwealth agencies. These operations involve surprise visits to businesses where non-compliance is suspected, investigating tax, superannuation, workplace, and immigration obligations simultaneously.
In August 2025, the ATO joined forces with the Fair Work Ombudsman for Operation Sentinel, conducting surprise visits to more than 30 food and hospitality businesses in Darwin. Operations like these are a clear signal that the ATO is committed to coordinated, multi-agency enforcement, not just desk-based audits.
What Are Your Obligations as a Business?
If your business accepts cash payments, your obligations are straightforward:
Report all income. Every dollar of cash received is taxable income and must be included in your tax return and BAS lodgements.
Issue receipts. All transactions should be recorded and receipts provided.
Register for GST if required. If your annual turnover meets or exceeds the $75,000 threshold, you are required to register for GST and charge it on taxable supplies. Deliberately keeping reported income below this threshold to avoid registration is one of the specific behaviours the ATO is targeting.
Pay workers correctly. All employees must be paid in accordance with the applicable award or agreement, receive their superannuation entitlements, and be covered by workers’ compensation.
Keep accurate records. The ATO requires businesses to keep records for at least five years. This includes records of all cash transactions.
Already Off Track? What to Do Now
If you have been operating partly outside the system, the best course of action is to address it proactively. The ATO does have voluntary disclosure provisions, and coming forward before an audit is initiated can reduce the penalties that apply. Penalties are generally higher when the ATO uncovers non-compliance through its own investigations rather than through a taxpayer’s own disclosure.
The ATO’s Tax Integrity Centre provides a point of contact for reporting suspected shadow economy activity. If you are on the other side of this equation and want to get back into compliance, speaking to a registered tax agent is the most practical first step.
How JMB Consultants Can Help
At JMB Consultants, we work with small and medium businesses across a range of industries to ensure their reporting, record-keeping, and employer obligations are properly managed. Whether you need to review your current practices, understand your GST registration requirements, or address outstanding lodgements, we can help you get on the right track before the ATO comes knocking.
Contact us for a confidential conversation about your business’s compliance position.
The information in this blog is general in nature and does not constitute personal tax or legal advice. Please seek professional advice to confirm how these rules apply to your specific circumstances.