A crisp $100 bill can make you feel slightly richer for about three secondsuntil a suspicious voice in your head asks, “Wait, is this thing real?” Fortunately, you do not need a forensic laboratory, a trench coat, or a dramatic ultraviolet montage to examine it. The U.S. government recommends a practical routine built around three simple actions: feel the note, tilt it, and check its security features with light.
The latest-design $100 note has several features that are extremely difficult for ordinary printers and copiers to reproduce, including raised printing, a woven blue security ribbon, color-changing ink, a portrait watermark, and an embedded security thread. Learning how these elements work can help consumers, cashiers, small-business owners, and private sellers identify suspicious money before a fake bill turns into a very real $100 loss.
First, Identify Which $100 Bill Design You Have
Before checking a $100 bill, remember that several genuine designs remain in circulation. The current version was first issued in 2013 and is easy to recognize because it has a wide blue ribbon near the center. Older $100 notes issued between 1996 and 2013 do not have that ribbon, but they can still be legitimate.
In fact, U.S. government policy states that every design of Federal Reserve note remains legal tender regardless of when it was issued. An older-looking bill is therefore not automatically counterfeit, just as an older-looking car is not automatically a parade float. You must examine the security features appropriate to that bill’s series rather than expecting every genuine note to look brand-new.
Features found on the current-design $100 note
- Raised printing with a distinctive texture
- A blue 3-D Security Ribbon woven into the paper
- A color-shifting Bell in the Inkwell
- A color-shifting numeral 100
- A Benjamin Franklin portrait watermark
- An embedded security thread marked “USA 100”
- Fine microprinting in several locations
Way 1: Feel the Paper and Raised Printing
Your fingertips can perform the first authenticity check before you reach for any tools. Genuine U.S. currency does not feel like ordinary printer paper. The Bureau of Engraving and Printing uses currency paper made from approximately 75% cotton and 25% linen, with small red and blue fibers distributed throughout the material. This gives real money a firm, fabric-like texture that is difficult to duplicate with standard office paper.
Run your finger across Franklin’s shoulder
Move a fingertip gently across Benjamin Franklin’s portrait, especially around his shoulder and clothing. Genuine notes are produced using an intaglio printing process that presses ink into the paper under substantial pressure. The result is slightly raised printing that you should be able to feel.
A basic inkjet counterfeit often feels unusually smooth, waxy, limp, thick, or glossy. However, texture alone is not enough. A heavily circulated genuine bill may feel soft after years of folding, washing, wallet duty, and other adventures no banknote volunteers to discuss. Use touch as the beginning of your inspection, not the final verdict.
Look for embedded fibers, not printed decorations
Under good lighting, examine the tiny red and blue fibers scattered through the paper. They should appear embedded within the material rather than drawn or printed on the surface. Counterfeiters sometimes imitate these fibers with colored marks, but printed squiggles usually look too uniform and sit visibly on top of the paper.
Compare the note with a known genuine bill
When possible, place the questionable note beside a $100 bill received from a bank or trusted ATM. Compare the texture, dimensions, portrait detail, border lines, paper color, and printing sharpness. Genuine currency has extremely precise lines and fine detail. A counterfeit may show fuzzy edges, muddy shadows, uneven ink, or flat-looking artwork.
Do not rely entirely on the overall shade of the bill. Genuine notes become dirty, faded, stained, or discolored as they circulate, while counterfeiters can imitate broad colors fairly easily. Texture and precision are more useful than asking whether the bill is exactly the right shade of money-green.
Way 2: Tilt the Bill and Watch the Security Features Move
The current-design $100 note contains two highly visible features that react when the bill is tilted: the blue 3-D Security Ribbon and the Bell in the Inkwell. These are among the fastest ways to check a modern $100 bill because their effects are dynamic. A printed imitation may look convincing in a photograph but becomes far less impressive once you move it.
Inspect the blue 3-D Security Ribbon
Find the blue strip running vertically near the center of the current-design bill. This is not supposed to be printed flat on the surface. It is woven into the paper.
Tilt the note forward and backward. Images of bells and the number 100 should appear to move from side to side. Then tilt the note from side to side; the images should appear to move up and down. This opposite-direction movement creates a distinctive three-dimensional effect that ordinary holographic stickers and blue printed lines cannot reproduce accurately.
Be suspicious if the ribbon:
- Peels away like tape or a sticker
- Appears printed directly onto the surface
- Contains bells and numbers that remain completely still
- Looks like a plain metallic strip with no clear movement
- Has blurry, irregular, or missing images
Check the Bell in the Inkwell
To the right of Franklin’s portrait is a copper-colored inkwell containing a bell. When you tilt a genuine bill, the bell changes from copper to green. At certain angles, the green bell seems to appear and disappear inside the copper inkwell.
This effect is produced with color-shifting ink. A counterfeit may contain a printed bell, but the color often remains unchanged or shifts weakly without producing the correct disappearing effect.
Watch the large numeral 100 change color
Examine the large 100 in the lower-right corner on the front of the current-design note. It should change from copper to green when tilted. The transition should be obvious rather than a minor reflection caused by shiny ink.
Older $100 designs use different tilt effects. For example, notes issued from 1996 through 2013 have a lower-right numeral that changes from green to black rather than copper to green. The absence of a blue ribbon on one of these older notes is normal, so always match your inspection to the design in front of you.
Way 3: Check the Watermark, Security Thread, and Fine Details
After feeling and tilting the note, hold it up to a bright lamp, window, or other light source. Two important features should become visible: the Franklin watermark and the embedded security thread.
Find the Benjamin Franklin watermark
Look at the blank area to the right of the main portrait. When the bill is held to light, a faint second image of Benjamin Franklin should appear. The watermark should be visible from both the front and back of the note because it is built into the paper rather than printed on one side.
The watermark should resemble Franklin and show natural changes in light and shadow. A crude printed face, a dark outline visible only from one side, or a watermark depicting the wrong person is a strong warning sign. Counterfeiters sometimes bleach a lower-denomination genuine bill and print a $100 design over it. In that situation, the paper may feel real, but the watermark may show the portrait or denomination associated with the original note.
Locate the embedded “USA 100” security thread
Hold the bill to light and look for a vertical security thread positioned to the left of Franklin’s portrait. On a genuine current-design $100 note, the thread is embedded inside the paper and is printed repeatedly with “USA” and “100.” It should be visible from both sides.
If you examine the bill under ultraviolet light, the $100 security thread should glow pink. Other denominations use different thread locations and ultraviolet colors, which helps expose altered bills. A counterfeit printed over a bleached $5 note, for example, may retain the security thread position and ultraviolet response of the original $5 instead of a genuine $100.
Use magnification to examine microprinting
Real $100 bills contain very small words in several locations. On the current design, examples include “THE UNITED STATES OF AMERICA” on Franklin’s collar, “USA 100” near the watermark, and tiny text around the golden quill.
A magnifying glass or smartphone macro camera can help. Genuine microprinting should look like recognizable letters rather than a broken line, a row of dots, or gray fuzz. Microprinting is a useful supporting check, although it should be combined with the watermark, security thread, and moving features.
Can a Counterfeit Detection Pen Confirm a $100 Bill?
A counterfeit pen can be convenient, but it should never be your only test. These pens generally react to starch found in common wood-based paper. Genuine U.S. currency paper normally produces a light or amber mark, while ordinary paper may produce a dark mark.
The problem is that counterfeit detection pens are not always accurate. They may produce false results on genuine bills contaminated by certain substances, and they may approve counterfeits made from bleached genuine currency paper. Both the Federal Reserve and Federal Reserve Financial Services advise relying on the note’s security features, particularly the watermark and embedded thread, instead of trusting a pen alone.
Other Warning Signs of a Fake $100 Bill
No single printing flaw proves that a bill is counterfeit, especially when the note is old or damaged. However, several problems appearing together deserve immediate attention.
- Blurry printing: Fine portrait lines and borders look fuzzy or pixelated.
- Uneven serial numbers: Characters are crooked, badly spaced, or printed in inconsistent colors.
- Repeated serial numbers: Several supposedly different bills carry the same serial number.
- Incorrect wording: The note contains misspellings, novelty phrases, or foreign writing.
- Missing security features: There is no proper watermark, thread, ribbon movement, or color shift.
- Wrong watermark or thread: The hidden features correspond to another denomination.
- Obvious prop markings: Phrases such as “For Motion Picture Use Only” or “Replica” appear in the design.
Serial numbers and seals can provide useful supporting clues, but they are not the best first-line tests because convincing counterfeits may reproduce them. Prioritize the physical security features that are embedded, raised, color-shifting, or responsive to movement.
What to Do if You Think a $100 Bill Is Counterfeit
Do not knowingly spend, exchange, or deposit a bill you believe is counterfeit. Passing suspected counterfeit currency to someone else can create legal trouble and simply transfers the financial loss to another person.
If you are an individual, the U.S. Secret Service advises submitting suspected counterfeit currency to your local police department. A local bank may also help identify whether the note appears genuine. Businesses and financial institutions should follow their internal counterfeit-reporting procedures and may need to complete the appropriate Secret Service reporting form.
Handle the note as little as possible and keep it separate from other cash. Do not confront or physically detain the person who gave it to you. Personal safety matters more than preserving a suspicious piece of paper. When appropriate, record details about the transaction, such as the time, location, items purchased, and description of the person, without placing yourself or anyone else in danger.
Experience-Based Lessons from Everyday Cash Handling
The following scenarios reflect common experiences faced by cashiers, marketplace sellers, restaurant workers, event vendors, and consumers. They illustrate why using several authentication checks is more dependable than relying on one dramatic “gotcha” moment.
Experience 1: The suspiciously perfect new bill
A private seller meets a buyer in a parking lot to sell a used phone for $400. The buyer offers four spotless $100 bills. Because the notes are crisp and brightly colored, the seller initially assumes they must have come directly from a bank.
One bill, however, feels smoother than the others. When tilted, its blue strip remains completely still. Under a car’s interior light, the Franklin watermark looks like a dark printed oval visible only from the front. Comparing all four bills makes the defective one much easier to identify.
The lesson is simple: a clean appearance does not prove authenticity. Counterfeit bills are often intentionally made to look new because buyers may associate crispness with reliability. For high-value cash transactions, inspect every bill individually instead of checking only the top note in the stack.
Experience 2: The real paper with the wrong hidden features
A cashier receives a $100 bill that feels completely genuine and passes a counterfeit pen test. During a second inspection, the watermark does not resemble Franklin, and the security thread is in the wrong position.
This situation demonstrates the danger of altered genuine currency. A counterfeiter may remove the ink from a lower-denomination bill and print a higher denomination over the authentic paper. The cotton-linen texture and embedded fibers remain genuine, so a touch test or marker may not detect the alteration. The denomination-specific watermark and security thread expose the mismatch.
The practical lesson is to confirm that all features agree with one another. A $100 portrait, $100 watermark, “USA 100” thread, pink ultraviolet glow, and correct tilt features should tell the same story. When one feature says $100 and another quietly whispers $5, believe the inconsistency.
Experience 3: The rushed checkout line
A convenience-store employee receives a $100 bill during a busy evening rush. The customer buys a low-cost item and expects a large amount of genuine cash in change. The note looks acceptable during a quick glance, but later examination reveals printed imitation fibers and a fake ribbon.
Counterfeiters may choose busy periods because employees feel pressured to complete transactions quickly. A useful response is to develop a routine that takes only a few seconds: feel the portrait, tilt the ribbon, and hold the bill to light. Performing the same sequence every time removes guesswork and makes the inspection feel like ordinary store procedure rather than a personal accusation.
Businesses can also keep a government-issued currency reference guide near the register and train employees with both current and older bill designs. Familiarity matters. Someone who regularly handles real currency is more likely to notice when a note feels oddly smooth, produces weak color changes, or has blurred details.
Experience 4: The old bill that is actually genuine
A customer presents an older $100 note without a blue security ribbon. A newly trained cashier assumes it is fake because every modern bill in the training photos had the bright blue strip.
The manager checks the series and recognizes a genuine pre-2013 design. The note has the appropriate raised printing, watermark, embedded security thread, microprinting, and older-style color-changing numeral. Rejecting it solely because it lacks the newest feature would have been a mistake.
This experience highlights the importance of checking the series before applying modern-design expectations. Older notes may be uncommon, but they remain legal tender. When uncertain, compare the note with official reference materials or ask a bank to examine it rather than guessing.
Experience 5: The bill that simply looks worn out
A consumer receives a soft, faded $100 bill from a legitimate business and worries because it lacks the crisp texture of newer cash. After inspection, the watermark, thread, microprinting, and color-shifting elements all behave correctly.
Real currency can become dirty, wrinkled, stained, taped, or worn. Heavy circulation may reduce the sharpness of raised printing and make a note feel softer than expected. This is why the strongest conclusion comes from several matching features, not one isolated impression. A worn bill with correct embedded security elements can be genuine, while a beautifully crisp note with a motionless printed ribbon can be counterfeit.
Conclusion
The easiest way to remember how to check if a 100 dollar bill is real is to use three verbs: feel, tilt, and check. Feel the distinctive paper and raised printing. Tilt the note to examine the moving blue ribbon, the Bell in the Inkwell, and the color-shifting 100. Finally, hold it to light to confirm the Franklin watermark and embedded “USA 100” security thread.
No single test is perfect. The safest approach is to confirm several security features that agree with one another. Pay special attention to the bill’s design year, since older genuine notes do not contain every feature found on the version issued since 2013. When the evidence remains uncertain, do not attempt to spend the note. Ask a bank or local law-enforcement agency for assistance.
