AI Fakes vs. AI Detectives: The New Arms Race Over Expense Fraud
Expense report software now uses A.I. to detect fake receipts created by chatbots, as these forgeries become harder to spot. Companies like AppZen and Expensify lead efforts to fight expense fraud.

A.I. vs. A.I.: Detecting Fake Receipts in Expense Reports
Expense report auditing software is adding new tools to catch receipts generated by A.I. chatbots. These fake receipts are increasingly realistic, making traditional detection methods less effective.
AppZen, a finance operations software company, was among the first to detect A.I.-generated receipts submitted by employees. This discovery pushed them to develop specialized tools to identify these fraudulent submissions.
The Challenge Faced by Expense Management Tools
When ChatGPT started creating realistic images, it quickly became apparent that it could generate convincing fake receipts. Anant Kale, CEO of AppZen, realized this posed a real threat to expense fraud detection. Their existing fraud-detection tools weren’t enough.
AppZen wasn't alone in this. Expensify enhanced its software in April to detect A.I.-generated receipts, while SAP Concur expanded similar capabilities globally through its Verify tool. Navan’s product development team highlighted the ongoing race: as A.I.-generated receipts improve, the response must also evolve using A.I.
Why Expense Fraud Is a Growing Concern
Expense fraud often starts small—a lost receipt replaced with a fake one. When employees don’t get caught, the behavior can escalate. AppZen uncovered a case where an employee submitted A.I.-generated receipts for hotels and flights in Bangkok, despite never visiting the city.
The Association of Certified Fraud Examiners reports that about 13% of occupational fraud cases involve inflated or fabricated expenses. The median financial loss in these cases is around $50,000, with some leading to criminal charges.
Practical Implications for Product Development Teams
- Integrate AI detection tools early. Embedding A.I.-powered fraud detection in expense management software can prevent losses and improve trust.
- Stay updated on A.I. capabilities. As fraudulent A.I. tools get more sophisticated, product teams must evolve detection methods accordingly.
- Balance automation with human oversight. Automated flags should be paired with manual reviews for edge cases to reduce false positives.
For product developers working in expense management or fraud detection, understanding these dynamics is key. Leveraging the right A.I. tools will be essential to keep pace with evolving fraud tactics.
To explore more about A.I. applications in product development and automation, consider checking out relevant courses and resources at Complete AI Training.