The audit number is a control code printed on your driver's license that helps state DMV offices track and verify the document's authenticity

The audit number (sometimes called a control number or document number) is a unique identifier printed on your driver's license or state ID card. It serves as an internal tracking code for the state Department of Motor Vehicles — not a personal identifier tied to your driving record or background. Each license issued gets its own audit number, so if you renew or replace your license, you receive a new one.

The audit number's primary purpose is to help DMV staff locate and verify a specific license in their system, especially when processing replacements, corrections, or fraud investigations. It also helps the state track which licenses were printed in which batches and when, which is useful for quality control and detecting counterfeits. You will not need to memorize or regularly use this number — it exists mainly for administrative purposes.

Key Takeaways

  • The audit number is a unique code assigned to your specific license by your state's DMV, not a personal identifier or background check marker.
  • Each time you renew or replace your license, you receive a new audit number; the old one no longer applies.
  • DMV staff use the audit number to locate your license record in their system and verify the document is genuine.
  • You do not need to provide or reference your audit number for routine driving or identification purposes.

Where the audit number appears on your license

The location and format of the audit number varies by state. On many licenses, it appears in small print near the bottom of the card, sometimes labeled as "Control #," "Document #," or "Audit #." Some states print it on the back of the card rather than the front. A few states do not use the term "audit number" at all but instead use similar control codes with different names.

If you cannot locate it on your license, check your state's DMV website or call your local DMV office — they can tell you exactly where it appears on your specific license type. The number is typically between 6 and 12 characters long and may include both letters and numbers.

Why DMV offices use audit numbers

State motor vehicle agencies issue millions of licenses each year. The audit number helps staff quickly pull up the correct record when you request a replacement, report a lost or stolen license, or need to update your address. Without a unique identifier on the physical card itself, staff would have to search by name and date of birth — a slower process that could return multiple matches.

Audit numbers also serve a security function. When a license is presented at a bank, airport, or law enforcement checkpoint, the person checking it can verify the number matches the state's records, which helps detect forged or altered documents. The number is part of the anti-counterfeiting features built into modern driver's licenses.

When you might see your audit number referenced

You will most likely encounter your audit number in written correspondence from the DMV — for instance, in a letter confirming a license renewal, a replacement order, or a correction to your record. If you call the DMV to check on a pending license process, the staff member may ask for your audit number to locate your file faster, though they can usually find it using your name and license number instead.

Law enforcement or security personnel may also reference the audit number when verifying your license, though this is less common in routine traffic stops. If you are asked to provide identification at a government office or financial institution, you would show your license but would not typically need to recite the audit number aloud.

Audit numbers and your driving record

The audit number on your license is not connected to your driving record, insurance history, or background checks. It is purely a document control code. Your actual driving record is tracked separately by the state under your license number and personal information. If you have traffic violations, accidents, or suspensions, those appear in your driving record — not because of the audit number, but because they are recorded under your license number in the state's database.

Similarly, the audit number does not change if your driving record is updated. You could receive a traffic citation, have points added to your record, or be suspended, and your current license's audit number would remain the same. Only when you renew or replace the physical license card do you receive a new audit number.

What to do if you cannot find your audit number

If you need your audit number for a DMV transaction and cannot locate it on your license, contact your state's DMV directly. You can usually reach them by phone, through their website, or in person at a local office. Have your license number and date of birth ready — that is all they need to look up your audit number in their system.

You can also request a replacement license if your current one is damaged or worn and the audit number is illegible. The replacement will have a new audit number, and the DMV will issue it to you within the standard timeframe for your state (usually one to two weeks for a standard replacement).

Frequently Asked Questions

Is the audit number the same as my driver's license number?

No. Your driver's license number is your primary identifier and stays with you as long as you hold a license in that state. The audit number is a separate control code assigned to the specific physical card you hold. When you renew, you keep the same license number but receive a new audit number.

Can someone use my audit number to look up my driving record?

No. The audit number is not a key to your personal information or driving record. It is an internal DMV tracking code. Your driving record is protected and can only be accessed by you, law enforcement, your insurance company, or others with a legal right to see it — and they use your license number and personal details, not the audit number.

What if my audit number is worn off or illegible?

Contact your state DMV to request a replacement license. The worn or illegible number does not affect your ability to drive or use your license for identification, but if you need to reference it for a DMV transaction, a replacement card will have a new, clear audit number printed on it.

Do all states use audit numbers?

Most states use some form of document control number on their driver's licenses, though the name and placement vary. Some call it an audit number, others use "control number" or "document number." If you are unsure whether your state uses one, check your license or contact your state's DMV office.