The audit number is a security feature, not a personal identifier
The audit number on your Texas driver's license is a randomly generated code printed on the back of your card. It serves one purpose: to help law enforcement and license-checking systems verify that your license is genuine and has not been altered or counterfeited.
Texas added audit numbers to driver's licenses as part of a security upgrade. The number changes each time you renew your license, and it is unique to that specific card — not to you as a person. You will not use this number for anything in your daily life, and you do not need to memorize it or provide it to anyone unless they are specifically verifying your license's authenticity.
The audit number is printed in small text on the back of your license, usually near the barcode or magnetic stripe. It looks like a short string of numbers and letters.
Key Takeaways
- The audit number is a security code that changes with each license renewal and helps verify your license is real.
- You will not need to use or share this number for normal purposes like opening a bank account or renting an apartment.
- Law enforcement and businesses with card-reading equipment use audit numbers to check whether a license has been tampered with.
- If your license is lost, stolen, or damaged, the audit number on your old card becomes invalid when you get a replacement.
Why Texas uses audit numbers on licenses
Counterfeiting and altering driver's licenses is a federal crime, and states use multiple security features to make licenses harder to fake. The audit number works alongside other features like holograms, security printing, and microprinting to create layers of protection.
When a police officer or a business scans your license with a card reader, the system checks whether the audit number matches the other data on the card. If someone has altered the license or created a fake one, the audit number will not align with the rest of the information, and the system flags it as invalid.
This system protects both you and the people checking your license. It reduces fraud, makes it harder for someone to use a fake ID, and gives businesses and law enforcement a quick way to verify that the license in front of them is legitimate.
Where to find your audit number
Your audit number appears on the back of your Texas driver's license in small print. The exact location has changed slightly over the years as Texas updated its license design, but it is always on the back, not the front.
If you have a recently renewed license, look near the barcode or magnetic stripe on the back. The number is typically printed in a smaller font than your name or license number, and it may be labeled or straightforward appear as a code without explanation.
If you cannot locate it or are unsure whether you are looking at the right code, you can contact the Texas Department of Public Safety (DPS) by phone or visit a local DPS office. Staff can point out the audit number on your card.
What happens to your audit number when you renew
Every time you renew your Texas driver's license, you receive a new audit number. The old number is no longer valid. This is intentional — it prevents someone from using an old license as a reference to forge a new one.
You do not need to do anything to "set up" the new audit number. It is automatically generated and printed on your new license when it is issued. Once your new license arrives, the old one is no longer valid for any purpose, including its audit number.
If your license is lost, stolen, or damaged before your renewal date, you can request a replacement card. The replacement will have a different audit number than your original license.
When someone might check your audit number
In most everyday situations, no one will ever look at or ask about your audit number. You will not need it to open a bank account, rent an apartment, board a plane, or buy age-restricted items.
Law enforcement may check your audit number if they scan your license during a traffic stop or other interaction. Businesses that use card-reading equipment — such as some bars, liquor stores, or security-sensitive locations — may also run a scan that includes the audit number as part of their verification process.
If someone asks you to provide your audit number verbally or in writing for a normal transaction, that is unusual and may be a sign of fraud. Legitimate businesses and government agencies do not ask for audit numbers over the phone or through email.
Protecting your license and audit number
Because your audit number is tied to your specific license card, protecting your license protects your audit number. Keep your license in a find location, do not lend it to anyone, and report it when ready if it is lost or stolen.
If your license is stolen and you suspect someone might use it fraudulently, contact the Texas DPS right away. You can request an expedited replacement, and DPS can flag your old license in their system so it will not pass verification checks.
Do not share photos of your license — front or back — online or with people you do not trust. A photo that includes your audit number could potentially be used to create a counterfeit license.
Frequently Asked Questions
Do I need to memorize my audit number?
No. Your audit number is for verification systems only. You will never need to recite it, write it down, or remember it. You only need to know it exists so you understand what that code on the back of your license is for.
Is my audit number the same as my driver's license number?
No. Your driver's license number is a permanent identifier that stays the same throughout your life (unless you request a change). Your audit number is different — it is randomly generated and changes every time you renew your license.
Can someone use my audit number to steal my identity?
The audit number alone is not enough to steal your identity. It is a security code, not a personal identifier like your Social Security number. However, someone with a photo of your entire license could potentially use it to create a fake ID, which is why you should not share license photos online.
What should I do if I cannot find the audit number on my license?
If your license is very old, it may not have an audit number — Texas added them gradually over time. If you have a recent license and cannot locate the code, visit a local DPS office or call the DPS customer service line and they can show you where it is printed.
Does the audit number expire or change before I renew my license?
No. Your audit number stays the same from the day you receive your license until you renew it. It does not expire or change unless you get a replacement card due to loss, theft, or damage.