Check fraud is rarely obvious. Most of the time, it shows up in small details that are easy to overlook during a busy day.
During April’s KWLM Ask the Expert segment, I had the opportunity to talk about how businesses can spot check fraud early and why catching subtle warning signs can make a major difference.
If you’re responsible for reviewing transactions, here are the red flags to watch for.
Why Businesses Miss Early Signs of Check Fraud
One of the biggest misconceptions about fraud is that it’s dramatic or easy to recognize. In reality, it often looks normal at a glance. A check clears that seems familiar. A vendor request that appears routine. A transaction amount that feels close enough to what you expected.
Fraud today is designed to blend in. It relies on timing, small changes, and busy processes. That’s why businesses that only review activity monthly often miss early warning signs. A simple shift to more frequent reviews, even daily, can help you spot issues before they turn into losses.
Common Check Fraud Red Flags
Knowing what to look for is your first layer of protection. These are some of the most common warning signs we see across businesses.
Unexpected or Unfamiliar Payees
If a check clears and you don’t immediately recognize the payee, it’s worth a closer look.
Fraudsters will often insert names that sound similar to known vendors or vendors you’ve worked with in the past. That slight familiarity is intentional. Pause and confirm. If something feels off, it usually is.
Check Amounts That Do Not Match Records
Even small differences matter. A check that is just slightly higher than expected or doesn’t align with your records can be a sign that it was altered. These adjustments are often subtle to avoid detection.
Always compare cleared checks to your internal records, not just your memory.
Timing That Does Not Align with Issuance
If a check clears much sooner or much later than expected, it can signal potential fraud.
For example, a check that was just issued but clears immediately, or one that surfaces long after it was thought to be outstanding, could indicate interception or duplication. Timing patterns are often one of the earliest indicators that something is wrong.
Vendor Account Change Requests
Vendor impersonation is becoming more common and more convincing. You may receive a request to update payment details, mailing addresses, or check instructions. On the surface, these requests look legitimate.
Before making any changes, verify them using a known, trusted contact method. Never rely solely on the information provided in the request itself.
Duplicate or Reused Check Images
Seeing the same check processed more than once is a clear red flag. With the rise of mail theft and image-based fraud, duplicate presentment is an increasing concern. If you notice repeated check numbers or identical images, take action right away.
What To Do When Something Does Not Look Right
If you notice any of these red flags, don’t wait. Start by reviewing your records and confirming the details internally. Then contact your bank as soon as possible. The quicker you act, the more options you may have to limit potential loss.
It’s also a good time to review your internal processes. Strong controls, clear approval steps, and consistent monitoring all help reduce risk.
How Preventive Tools Reduce Risk
While awareness is critical, the right tools can provide an added layer of protection. Services like Positive Pay allow your bank to compare checks presented for payment against the checks you’ve issued. If something doesn’t match, it can be flagged for review before funds leave your account.
These tools don’t replace your oversight, but they do strengthen it.
Final Takeaway
Check fraud rarely starts with a major event. It starts with something small that feels slightly off.
The businesses that catch it early are the ones paying attention to those small details.
A consistent review process, a healthy level of curiosity, and the right tools in place can help protect your business from becoming a target.
Learn More
Want an added layer of protection? Talk with your banker about how Positive Pay can help you monitor activity and catch suspicious checks before they clear.
