Knowing how to spot counterfeit money helps your business keep fake bills out of deposits and reduce preventable cash losses. Employees can check several security features manually, while cash capture technology can add another layer of consistent bill validation.

Businesses that regularly accept cash need practical procedures for determining how to tell if money is fake. Learning the security features of genuine currency, combining multiple inspection methods, and using automated technology can help employees detect counterfeit money before a questionable bill reaches the bank.

an infographic showing six features of U.S. currency security

General U.S. Currency Security Features

Genuine U.S. currency incorporates several security features that can help employees compare real vs. fake money. Features vary by denomination and series, so employees should examine more than one characteristic when deciding whether a bill needs additional inspection.

Common features include:

  • Distinctive currency paper with small red and blue fibers embedded throughout it
  • Raised printing that gives genuine notes a slightly rough texture
  • Watermarks on applicable denominations
  • Embedded security threads on denominations $5 and higher
  • Microprinting and other detailed printing
  • Color-shifting ink on denominations $10 and higher

Specific U.S. Currency Security Features

Not every bill uses the same security features. Employees learning how to test counterfeit money should become familiar with the denominations their locations handle most often.

  • $5: Raised printing, microprinting, two numeral 5 watermarks, and a security thread
  • $10, $20, and $50: Raised printing, microprinting, a portrait watermark, security thread, and color-shifting numeral
  • $100: Raised printing, microprinting, portrait watermark, security thread, color-shifting ink, and a blue 3-D Security Ribbon

Designs also vary by series and year. Comparing a questionable note with the legitimate features for that specific denomination provides a stronger check than relying on a single feature.

an infographic showing eight steps in how to spot counterfeit money

8 Strategies for How to Identify Counterfeit Money

The U.S. Currency Education Program recommends checking currency by feeling the paper, using light, tilting the note, and inspecting fine details. Businesses deciding how to identify counterfeit money should combine multiple checks instead of treating one test as definitive. Below are eight specific strategies that help you identify fake cash.

Check the Feel of the Paper

Genuine U.S. currency should feel slightly rough because of its printing process and unique paper composition. When considering how to spot fake money, check for notes that feel unusually smooth, stiff, thick, thin, or otherwise noticeably different from legitimate bills.

Identify Watermarks

Hold applicable bills to a light source and look for the embedded watermark. On denominations of $5 and higher, the watermark should match the security features expected for that note. The $5 bill differs because it uses two numeral 5 watermarks rather than a portrait.

Look For Security Threads and Red and Blue Fibers

Security threads are embedded in denominations $5 and higher, with their positions varying by denomination. Genuine currency paper also contains small red and blue fibers. These features should be part of the note rather than simply printed or drawn onto its surface.

Inspect Federal Reserve Note Identifiers

Employees asking, “Is this real money?” can inspect identifiers such as the serial number, Federal Reserve indicator, plate numbers, series year, and note position. Irregularities can justify further inspection, but employees should not treat one identifier alone as proof of counterfeit currency.

Inspect for Color-Shifting Ink

On applicable denominations, tilt the bill and watch the lower-right numeral change from copper to green. Color-shifting ink appears on denominations $10 and higher. An absent or poorly replicated shift may indicate the note needs closer inspection.

Check $100’s for 3D Security Ribbon

The current-style $100 note includes a blue 3-D Security Ribbon woven into the paper rather than printed on top. When you tilt the note, its bells and 100s appear to change and move. Employees can also inspect its watermark and color-shifting ink.

Use a Counterfeit Detection Pen or a Smart Safe

A counterfeit bill detector such as a detection pen offers a quick manual screening method, but automated cash capture technology like smart safes can validate bills during deposits. Learn what smart safes are and how they can reduce reliance on manual verification.

Look For Ink Bleeding or Smudging

Inspect fine lines and printed details for blurring, smudging, or other unusual inconsistencies. Poor-quality printing may warrant another check when determining how to tell if a bill is counterfeit, but ordinary wear, staining, or damage does not automatically make a bill counterfeit.

What to Do if You Get a Counterfeit Bill

Knowing what to do if you get a counterfeit bill helps employees respond consistently without unnecessarily escalating the situation. Follow your organization’s documented procedures and avoid confronting the person who presented the suspected bill.

Procedures may include contacting local law enforcement or a local U.S. Secret Service field office. Businesses can review Secret Service counterfeit guidance when developing their procedures.

How to Protect Your Business From Counterfeit Money With Technology

Manual checks help employees distinguish real vs. counterfeit money, but technology can make validation more consistent across locations. Effective cash handling procedures can combine employee training with automated cash capture.

ICL’s CashSimple® cash management solution uses smart safes that validate bills as employees deposit them. If the equipment detects fake US currency, it will not accept that bill into the deposit, helping businesses catch questionable currency before it reaches their bank account.

Safeguard Your Cash with Our CashSimple® Cash Management Solution

Employees can check paper texture, watermarks, security threads, identifiers, color-shifting ink, printing quality, and denomination-specific security features when evaluating suspicious bills. Pairing those checks with clear procedures and automated bill validation can create a more consistent approach across multi-location businesses.

CashSimple® brings cash capture and validation into everyday operations, reducing the amount of manual verification employees need to perform while helping businesses identify questionable bills before deposit. It also supports a broader approach to efficient business cash management without making counterfeit detection another manual burden for managers and employees.

Schedule a demo today to explore how ICL’s CashSimple® cash management solution simplifies cash handling and strengthens counterfeit detection across your locations.