Common Procurement Mistakes — and the Red Flags Every Team Should Know 

Most procurement mistakes don’t look like fraud. They look like a missed approval step, a spreadsheet that’s slightly out of date, or a supplier nobody quite remembers onboarding properly. On their own, these look like small operational slip-ups. But they matter more than most teams realise. 

Here’s why. The same weak controls that cause everyday mistakes — no clear ownership, no audit trail, no segregation of duties — are exactly the gaps that fraud exploits. A missed check isn’t just an efficiency problem. It’s an open door. 

The scale involved makes this worth taking seriously. International estimates suggest that 3% to 5.95% of government expenditure worldwide is lost to fraud and error each year. In Australia alone, government procurement contracts reported on AusTender are worth over $70 billion annually. Even a small error rate adds up to a very large number. 

This post covers both ends of that spectrum: the everyday process mistakes that trip up procurement teams, and the fraud red flags that show up when those same gaps go unaddressed. 

The Most Common Procurement Mistakes (and Why They Keep Happening) 

Most procurement mistakes trace back to a handful of root causes. They show up differently in different organisations, but the pattern is consistent. 

No clear process owner. When purchasing responsibility is split across departments with no single point of accountability, nobody has full visibility over what’s being bought, from whom, or why. Gaps and duplications become the norm rather than the exception. 

Manual, spreadsheet-based workflows. Spreadsheets don’t scale. They’re easy to edit without a trace, hard to audit, and prone to version confusion — three problems that compound the moment more than one person touches a purchasing decision. 

Reactive rather than planned purchasing. Buying decisions made under time pressure skip the steps that exist to catch problems: competitive quotes, proper approvals, supplier checks. Urgency becomes the justification for cutting corners. 

Skipping supplier due diligence. Onboarding a new supplier without verifying who they are, checking references, or confirming they’re a genuine, independent business creates risk that’s very difficult to unwind later. 

Poor intake design. If there’s no clear, easy way for staff to request a purchase through the proper channel, they’ll find their own way around it — commonly known as maverick spend. It’s rarely malicious. It’s usually just a process that didn’t make the right path the easy path. 

Rushed technology or AI adoption. New procurement tools and AI-driven analytics can genuinely reduce error rates, but only when they’re built on clean, well-governed data. Adopting new technology on top of messy foundations tends to automate the mistakes, not fix them. 

When Mistakes Become Fraud Risk 

Here’s the uncomfortable connection: the same weaknesses that cause honest mistakes are what make fraud possible. ICAC NSW points out that procurement functions carry high corruption risk precisely because they combine discretionary decision-making with the transfer of large amounts of public funds. Add weak oversight to that mix, and an honest error and a deliberate exploit start to look very similar from the outside. 

This is why fraud prevention and process discipline aren’t separate conversations. They’re the same conversation. 

Common procurement fraud red flags to watch for 

Fraud in procurement tends to cluster around a few recognisable patterns. None of these alone proves wrongdoing, but each one is worth a closer look. 

• Bidding irregularities — bids that are unusually close together, one supplier consistently winning despite higher prices, or specifications that seem written around a particular vendor 
• Invoice irregularities — duplicate invoices, inflated charges, or invoices too vague to verify against what was actually delivered 
• Relationship red flags — undisclosed conflicts of interest, unexplained favouritism toward one supplier, or contracts awarded without competition when competition was clearly possible 
• Split purchases — a single need broken into smaller transactions that each fall just under an approval threshold, avoiding the scrutiny a larger purchase would trigger 

IBAC Victoria also flags a simpler tell: invoices that are sloppy, inconsistent, or missing basic detail. Genuine suppliers tend to get the paperwork right. 

What This Looks Like in Australia 

This isn’t a hypothetical risk. The Australian Institute of Criminology’s 2023–24 fraud census recorded 288,808 allegations of fraud against the Commonwealth, with 95% of those relating to external fraud. The same census found that 32% of responding government entities hadn’t tested the effectiveness of their fraud controls in the previous two years. 

ICAC South Australia’s “Buying Trust” report adds useful context on why this happens. Many procurement officers, the report found, are under-resourced and haven’t received adequate training in recognising corruption risk — not because they’re careless, but because the training simply hasn’t reached them. That’s a capability gap, not a character flaw, and it’s one that’s genuinely fixable. 

How to Prevent Procurement Mistakes and Reduce Fraud Risk 

The fixes for everyday mistakes and the fixes for fraud exposure overlap almost entirely. Strengthen one, and you strengthen the other. 

Establish clear ownership and segregation of duties. No single person should be able to request, approve and pay for a purchase without another set of eyes involved. This is one of the simplest and most effective controls available. 

Move off spreadsheets and email. Centralised, auditable procurement systems create a clear trail of who did what, and when — which deters both careless mistakes and deliberate manipulation. 

Build structured supplier due diligence into onboarding. Verify who you’re dealing with before the relationship starts, not after a problem surfaces. 

Audit regularly, not just on paper. A fraud control policy that’s never tested isn’t a control — it’s a document. Regular, even random, audits are what actually catch problems early. 

Train staff to recognise red flags, not just follow process. Process compliance and risk awareness are different skills. Teams need both. This is exactly the kind of practical, applied capability we build into Transformed’s Procurement and Contract Management courses — turning policy knowledge into the judgement to spot a problem before it escalates. 

What to Do When a Mistake Happens 

Even well-run procurement functions make mistakes. What matters is how they respond. 

1. Pause. Stop the process before it goes further. 
2. Assess. Work out what actually happened, and how serious it is. 
3. Notify. Loop in the right people early — this isn’t the moment to handle it quietly. 
4. Fix. Correct the immediate issue. 
5. Find the root cause. A mistake is a symptom. Find what actually allowed it to happen. 
6. Prevent recurrence. Update the process so the same gap can’t be exploited again, whether by accident or on purpose. 

The Takeaway 

Procurement mistakes are inevitable — no process is perfect, and no team catches everything. But the gap between an honest error and an exploitable weakness is smaller than most organisations assume. It’s closed by the same things: clear ownership, auditable systems, proper due diligence, and staff who know what to look for. 

That capability doesn’t happen by accident. It’s built. 

Want to strengthen your team’s procurement risk capability? Explore our procurement and contract management training or get in touch to talk about what stronger controls could look like for your organisation.