Can You Smile in a Passport Photo? Yes — But Here's the Catch

A slight, natural smile with your mouth closed is acceptable in a U.S. passport photo. Showing teeth, grinning, or any expression that changes the shape of your face will likely be rejected. A neutral expression is the safest choice. Rules vary by country.

Can you smile in a passport photo? The short answer is yes — technically. The U.S. Department of State says you should have "a neutral facial expression or a natural smile with both eyes open." That sounds like permission to smile. But in practice, a smile is the easiest way to get your passport photo flagged for review, delayed, or rejected entirely.

The reason has nothing to do with rules about happiness. It has everything to do with facial recognition software — and the way a smile changes the geometry of your face.

Why Passport Photos Require a Neutral Expression

Modern passports are biometric documents. When you pass through border control at an airport, a scanner captures your face and compares it against the photo stored in your passport's chip. This facial recognition system measures specific distances between your facial features — the width between your eyes, the distance from your nose to your chin, the shape of your jawline.

A smile changes all of these measurements. It raises your cheeks, narrows your eyes, shifts your lip position, and alters the contour of your face. The wider the smile, the more your facial features shift from their resting position. That makes it harder for facial recognition software to match you to your photo — which is exactly what passport photo guidelines are designed to prevent.

The International Civil Aviation Organization (ICAO), which sets the global standard for biometric passports, recommends a neutral expression with the mouth closed for this reason. Most countries follow ICAO guidelines, though they differ in how strictly they enforce the smile rule.

Can You Smile with Teeth in a Passport Photo?

No. Showing teeth in a passport photo is rejected in virtually every country. An open-mouth grin, a laugh, or any expression where your teeth are visible will not pass automated photo compliance checks in the U.S., and most passport acceptance facilities will flag it before your application is even submitted.

Even a subtle teeth-showing smile is risky. If the photo reviewer can see teeth, they may reject it. The safest approach: keep your mouth closed.

How Much Can You Smile in a U.S. Passport Photo?

The State Department allows a "natural smile" — but what does that actually mean?

Acceptable: A very slight upturn at the corners of your mouth. Think "relaxed and pleasant" rather than "posing for a family photo." Your mouth stays closed, your eyes stay open, and your face looks natural. This is sometimes called a "Mona Lisa smile."

Not acceptable: Anything where your teeth show, your cheeks rise enough to narrow your eyes (squinting your eyes), your mouth opens, or the expression looks exaggerated or forced.

The safest choice: A completely neutral expression. Not angry, not sad — just relaxed with your mouth closed and your eyes looking directly at the camera. This is what most passport photo guidelines recommend, and it eliminates any risk of expression-related rejection.

If you're unsure whether your smile is too much, it probably is. Go neutral.

Why Can't You Smile in US Passport Photos?

Three reasons:

1. Facial recognition technology. Automated scanners at airports and border control measure facial geometry. A smile distorts those measurements, making it harder for the system to match your face to your passport photo. The goal is to prevent fraud and verify identity quickly.

2. Consistency across millions of photos. The State Department processes millions of passport applications annually. A neutral expression creates a consistent baseline that makes both automated and human verification more reliable.

3. ICAO international standards. The U.S. follows ICAO Doc 9303 guidelines for biometric travel documents, which specify a neutral expression with a closed mouth. This aligns U.S. passports with the global standard used at international entry points worldwide.

Passport Photo Smile Rules by Country

Not every country interprets the smile rule the same way:

United States: "Neutral facial expression or a natural smile." A slight closed-mouth smile is acceptable. Teeth showing is rejected.

United Kingdom: "A plain expression with your mouth closed." The UK is stricter — even a slight smile is discouraged. Neutral expression strongly recommended.

Canada: "With a neutral expression (not smiling)." Canada explicitly says no smiling. Neutral expression required.

India: Neutral expression required. The Passport Seva system (GPSP 2.0) uses automated checks that flag expressions deviating from neutral.

Germany: Strictly neutral expression. No smile at all. Germany has the strictest expression rules — even a slight closed-mouth smile can trigger rejection at automated Bürgeramt verification systems.

Australia: Neutral expression, mouth closed. Standard ICAO compliance.

The pattern: the more automated a country's passport photo verification system, the stricter the expression rules.

What About a Child's Facial Expression?

The same expression rules apply to children as to adults — neutral expression, mouth closed, eyes open, face the camera directly. But there are practical relaxations for very young children:

Infants (under 1 year): The State Department acknowledges that getting a neutral expression from a baby is difficult. Slightly open mouths and partially closed eyes may be accepted for very young infants. But aim for the best neutral expression you can get.

Toddlers (1-3 years): Neutral expression expected, but reviewers show some leniency for young children.

Children (4+): Same rules as adults. Neutral expression, mouth closed, eyes open, facing the camera directly.

What Happens If You Submit a Smiling Photo?

If you submit a passport photo with a visible smile — especially one showing teeth — one of three things will happen:

1. Caught at the acceptance facility. The agent reviewing your application will likely catch it and ask you to retake the photo on the spot. Best case — you lose a few minutes, not weeks.

2. Application returned by mail. If the smile isn't caught at submission but flagged during processing, your entire application will be mailed back with a notice explaining the photo issue. This adds 2-4 weeks of delay.

3. Online renewal rejected. The digital upload system may reject the photo immediately, or accept the upload but flag it during human review — resulting in a delay notification by email.

In all cases, you'll need a new photo. The application isn't denied — just delayed until you provide a compliant photo.

You Smiled in a Passport Photo — What Now?

If you already submitted and you're worried:

If you haven't mailed it yet: Take a new photo with a neutral expression and swap it. Free and saves weeks.

If you already submitted: Wait for a response. If it passes review, you're fine. If returned, retake with a neutral expression and resubmit promptly.

The lesson: when in doubt, retake the photo with a neutral expression before submitting. A five-minute retake is better than a four-week delay.

Common Passport Photo Expression Mistakes

Beyond smiling, these expression-related issues cause rejections:

Passport Photo Smile FAQs

Is a slight smile OK in a passport photo? Yes, for U.S. passports. The State Department allows "a neutral facial expression or a natural smile." A very slight, closed-mouth smile is acceptable. However, a neutral expression is safer and recommended.

Can your teeth show in a passport photo? No. Showing teeth will almost certainly result in rejection. Keep your mouth closed regardless of whether you smile slightly or maintain a neutral expression.

Why can't you smile in a passport photo? Facial recognition technology at airports and border control measures the geometry of your face. A smile changes those measurements — raising cheeks, narrowing eyes, shifting jaw position — making it harder for scanners to match your face to your passport photo.

Can a child smile in a passport photo? The same rules apply as adults — neutral expression preferred, mouth closed. Very young infants may have slightly relaxed standards, but aim for neutral.

When did they stop letting you smile in passport photos? There was never an outright ban on smiling in U.S. passport photos. The State Department still allows a "natural smile." However, the 2016 glasses ban and increasing use of facial recognition at borders have made neutral expressions the strong recommendation. Countries like Canada and Germany explicitly prohibit smiling.

Are there any countries that allow smiling in passport photos? The U.S. is one of the most lenient — it allows a natural, closed-mouth smile. Most other countries, including Canada, Germany, India, and Australia, require a strictly neutral expression. No major country allows teeth-showing smiles.