An audit number is a tracking code your state's DMV assigns to your driver license record for internal record-keeping and verification purposes
When you renew your driver license or the DMV processes certain transactions on your account, they assign an audit number — a unique identifier that appears on your license document or in your DMV record. This number lets the DMV track changes to your license history, verify the authenticity of your license, and investigate discrepancies if something goes wrong with your record. It is not the same as your license number itself, and you will not need it for everyday driving.
The audit number changes each time your license is renewed or reissued. If you get a replacement license due to damage, name change, or address update, you receive a new audit number. This creates a chain of records that the DMV can use to confirm your license is legitimate and that all transactions on your account are documented.
Key Takeaways
- An audit number is assigned by your state DMV to track your driver license record and verify its authenticity, and it changes with each renewal or reissue.
- You will find the audit number printed on your physical license or in your DMV online account, though its exact location varies by state.
- The audit number is used by law enforcement, courts, and the DMV itself to confirm your license is valid and to investigate fraud or record errors.
- You do not need to memorize or carry the audit number separately — it is part of your official DMV record and appears on your license document.
- If you notice your audit number has changed unexpectedly or your license shows transactions you did not authorize, contact your state DMV when ready.
Where to find your audit number on your license
The location of the audit number on your physical driver license depends on your state. Some states print it on the front of the card near the license number; others place it on the back. A few states do not print it on the card itself but store it only in their internal DMV database.
The easiest way to locate it is to check your state's DMV website or your online DMV account if your state offers one. Most state DMV portals let you log in with your license number and date of birth, then display your full record including the audit number. If you cannot find it online, call your state DMV directly — they can read it to you over the phone or mail you a document showing it.
Why the DMV uses audit numbers to verify licenses
Law enforcement and other agencies use audit numbers to confirm that a driver license is genuine and that the person presenting it is the actual license holder. When an officer runs your license through their system, the audit number helps them cross-check that the information on the card matches the DMV's current record. If someone has altered your license or if a fraudulent copy is in circulation, the audit number will not match what is in the DMV database.
Courts and government agencies also use audit numbers when they need to verify your identity for legal proceedings, background checks, or official transactions. The number creates a permanent link between your physical license and your DMV file, making it harder for someone to use a fake or altered license in your name.
What happens if your audit number changes unexpectedly
Your audit number should only change when you renew your license, request a replacement, or update critical information like your name or address. If you notice a new audit number on your record without having done any of those things, it could signal that someone has accessed your DMV account or requested a license in your name without your knowledge.
Contact your state DMV when ready if this happens. Ask them to review your account history and show you what transaction triggered the new audit number. If you did not authorize it, the DMV can investigate whether your identity has been compromised and may place a fraud alert on your record. You may also want to check your credit report and contact the Federal Trade Commission if you suspect identity theft.
How audit numbers relate to license renewal and reissue
Every time you renew your driver license — whether it is a standard renewal, an early renewal, or a replacement due to damage or loss — you receive a new audit number. This is normal and expected. The old audit number remains in the DMV's historical records, but your current license and active record use the new one.
If you renew online, by mail, or in person at the DMV, the process is the same: you complete the transaction, and the DMV assigns a fresh audit number to your new license. When your replacement license arrives in the mail, the audit number will be printed on it. You can also see the new number in your online DMV account once the renewal is processed.
Audit numbers and driver license fraud prevention
Audit numbers are one of several tools the DMV uses to prevent and detect license fraud. Because each number is unique to a specific license record and changes with each transaction, it is difficult for someone to create a fake license that will pass verification. If a fraudster tries to use an old audit number with a current license number, the mismatch will be caught when law enforcement or an agency runs the license.
The DMV also uses audit numbers to track suspicious patterns — for example, if multiple licenses are being issued to the same person or if a single person's record shows an unusual number of changes in a short time. These patterns can trigger an investigation into whether someone is committing identity theft or license fraud.
What you do not need to do with your audit number
You do not need to memorize your audit number, write it down separately, or carry it with you. It is printed on your license and stored in the DMV database, so it is always available when you need it. You will not be asked to provide it when you renew your registration, pay a traffic ticket, or interact with law enforcement during a traffic stop.
The only time you might need to reference it is if you are working with the DMV directly to resolve a record error or investigate fraud. In those cases, the DMV staff will ask you for it, or they will pull it from your file themselves. You do not need to take any action related to your audit number in your day-to-day life.
Frequently Asked Questions
Is my audit number the same as my driver license number?
No. Your driver license number is your primary identifier and stays the same throughout your life in most states. Your audit number is a separate tracking code that changes each time your license is renewed or reissued. The license number appears prominently on your card; the audit number is usually smaller and in a different location.
Can someone use my audit number to commit fraud?
An audit number alone is not enough to commit fraud because it is tied to your specific DMV record and changes regularly. However, if someone has access to your full license information plus your audit number, they have more tools to create a convincing fake. Protect your license the same way you protect other identity documents — do not share photos of it online, and report it lost or stolen when ready if it goes missing.
What should I do if I see an audit number on my record that I do not recognize?
Contact your state DMV and ask them to explain what transaction created that audit number. If you did not authorize it, report it as potential fraud. The DMV can review your account history, place a fraud alert on your record, and investigate whether someone accessed your account without permission.
Do all states print the audit number on the physical license card?
No. Some states print it on the front or back of the card, while others store it only in their database and do not print it on the physical license. Check your state's DMV website or call them to find out where your audit number appears. You can always view it in your online DMV account if your state offers one.
Will I need my audit number when I renew my vehicle registration?
No. Vehicle registration renewal uses your driver license number and vehicle identification number, not your audit number. The audit number is for DMV internal tracking and license verification only.