You can find a vehicle's tag number (license plate number) using its VIN through your state's Department of Motor Vehicles, law enforcement databases, or a vehicle history report service.
The tag number is the license plate identifier assigned to a specific vehicle. It differs from the VIN, which is the vehicle's permanent identification number. If you have the VIN but need the tag number, your state's DMV is the most direct source — they maintain the official record linking VINs to current and historical tag numbers.
The method you use depends on why you need the information and what access you have. A private citizen looking up their own vehicle's tag can use different routes than someone trying to find information about a vehicle they do not own.
Key Takeaways
- Your state's Department of Motor Vehicles holds the official record connecting a VIN to its tag number and can provide this information if you own the vehicle or have a legitimate reason to request it.
- Vehicle history report services like Carfax and AutoCheck include tag number information when you search by VIN, though you may need to pay a fee.
- Law enforcement and licensed investigators can access tag information through law enforcement databases, but this is not available to the general public.
- Tag numbers change when a vehicle is sold or transferred to a new owner, so the tag linked to a VIN may not be current if the vehicle has changed hands.
How to Request Tag Information From Your State DMV
Contact your state's Department of Motor Vehicles directly with the VIN. Most states allow vehicle owners to request their own vehicle information by phone, mail, or online through the DMV website. You will typically need to provide proof of ownership, such as your registration or title document.
The process and fees vary by state. Some states offer this lookup free to the registered owner; others charge a small fee (usually under $10). A few states provide online lookup tools where you can enter a VIN and retrieve basic information including the current tag number. Check your state DMV's website for their specific process and any required documentation.
If you are trying to find information about a vehicle you do not own, the DMV will not release tag information without a legitimate legal reason. Law enforcement, insurance companies, and licensed private investigators may have access through official channels, but a private citizen generally cannot obtain another person's vehicle information this way.
Using Vehicle History Reports to Find Tag Numbers
Services like Carfax, AutoCheck, and similar vehicle history report providers include tag number information in their reports. When you search by VIN, the report typically shows the current tag number and sometimes historical tag numbers from previous registrations.
These services charge a fee per report, usually between $20 and $40, though some offer discounts for multiple reports. The advantage is speed — you get results when ready online without contacting a government agency. The disadvantage is cost and the fact that the information may not be completely current if the vehicle was recently sold or re-registered.
Vehicle history reports are most useful if you are buying a used car and want to verify the tag number matches what the seller claims, or if you need historical tag information for insurance or legal purposes.
When Tag Numbers Change
A vehicle's tag number changes when it is sold and re-registered to a new owner. The VIN stays the same for the life of the vehicle, but the tag number is tied to the current registration. This means if you look up a VIN and find a tag number, that tag may no longer be valid if the vehicle has changed owners since that registration.
If you are trying to locate a specific vehicle on the road, the tag number is more useful than the VIN because it is visible on the license plate. However, if you are researching a vehicle's history, the VIN is the permanent identifier that will connect you to all of its records across different owners and tag numbers.
What Information You Need Before You Start
You will need the complete 17-character VIN. This can be found on the vehicle's registration, title, insurance documents, or the dashboard on the driver's side where it meets the windshield. Make sure you have the correct VIN before contacting the DMV or using a history report service, because even one wrong character will return no results or incorrect information.
If you are contacting your state DMV, also have your driver's license or proof of ownership ready. Some states require you to provide your name and address to confirm you are the registered owner before releasing information.
Why You Might Need a Tag Number From a VIN
Common reasons include verifying a vehicle's current registration status before buying it, locating a vehicle for insurance or legal purposes, or confirming that a tag number matches the VIN on a vehicle you are considering purchasing. If you are buying a used car, cross-checking the VIN on the title against the tag number on the vehicle is a basic safety step to may support the vehicle is not stolen or misrepresented.
If you are dealing with a vehicle accident, insurance claim, or legal matter, you may need both the VIN and tag number on file. Having both pieces of information creates a complete record that is harder to dispute or confuse with another vehicle.
Frequently Asked Questions
Can I look up someone else's tag number using their VIN?
Not through official channels. The DMV will not release another person's vehicle information without a legal reason. If you need this information for a legitimate purpose like a legal case or insurance claim, you may need to go through law enforcement or an attorney.
How long does it take to get tag information from the DMV?
If you request it online or by phone, you may get an answer the same day. By mail, expect one to two weeks. Vehicle history report services provide results when ready online, though the information may be a few days old.
Is the tag number the same as the VIN?
No. The VIN is a 17-character code that identifies the vehicle itself. The tag number is the license plate number assigned by your state's DMV. One vehicle has one VIN for life, but may have multiple tag numbers over time as it changes owners.
What if the tag number I find does not match the one on the vehicle?
This could mean the vehicle was recently sold and re-registered, the registration is not yet updated in the system, or there is a discrepancy that needs investigation. Contact your state DMV to confirm the current tag for that VIN, and ask the seller why the numbers do not match.
Do I need to pay to find a tag number?
Not if you contact your state DMV directly — most offer free lookups to the registered owner. Vehicle history report services charge a fee, usually $20 to $40 per report. The cost depends on which method you choose.