Want to Change Your Vehicle Registration Number? What Should You Do and What Documents Are Required in 2026
Want to Change Your Vehicle Registration Number? Here’s What You Need to Know in 2026 Many vehicle owners want a registration number that is easy to remember, looks good, or has a special meaning. So, can you change the registration number of a vehicle that is already registered? The answer is yes. You can apply to use or change a vehicle registration number, but you must follow the rules of the Department of Land Transport. This service is available for private cars and private motorcycles. What Types of Registration Number Changes Are Possible? Changing a registration number can be done in several ways. For example, you may: Change your current number to another number. Move a registration number from one vehicle to another. Swap registration numbers between two vehicles. Use a registration number that has never been assigned to a vehicle before. Use a registration number won at an auction. Some cases may have special rules. So, it is best to check the type of registration number you want before applying. 1. Check Your Vehicle First Before applying, your vehicle must have no unpaid annual vehicle tax and must not have any restriction that blocks registration changes. In general, you must wait more than 1 year after the last registration number change before applying again. However, this 1-year rule may not apply in some cases, such as: The new registration number was won at an auction. The registration number belongs to the same vehicle owner. You bought a used vehicle and want to change the registration number during or after the ownership transfer. However, if the vehicle is transferred back to the previous registered owner within 1 year, special conditions may apply. You may also need documents to prove that you meet the requirements. 2. Check the Registration Number You Want The registration number you want must be allowed under the rules of the Department of Land Transport. It may be: A number already used on another vehicle. A number that has never been used before. A number won at an auction. Auction registration numbers have their own rules and fees. Before applying, it is a good idea to check the status of the number with the Department of Land Transport or your local transport office. 3. Prepare the Required Documents The main documents usually include: National ID card of the vehicle owner Vehicle registration book Company registration certificate, if the vehicle is owned by a company Copies of documents may need to be signed and certified. If you are moving or swapping a registration number between vehicles, you may also need a consent letter from both parties. If someone else applies for you, you will need: Power of attorney Copy of the vehicle owner’s ID card Copy of the representative’s ID card All copies should be properly signed. Can You Change the Number of a Financed Vehicle? Yes, a financed or hire-purchase vehicle may still be able to change its registration number. However, you may need written permission from the finance company or hire-purchase provider. If your vehicle is still under finance, contact the finance company before applying. 4. Where Can You Change the Registration Number? The place where you apply depends on the type of change. For swapping registration numbers between two vehicles, you can apply at the transport office responsible for either vehicle. For using a registration number that has never been assigned before, cases in Bangkok are handled at Bangkok Transport Office Area 5. For vehicles in other provinces, contact the Provincial Transport Office responsible for your vehicle before visiting. 5. How Much Does It Cost? The fees may include: Application fee: THB 5 Registration number usage fee: THB 500 Registration record update: THB 50 per car Registration record update for motorcycles: THB 10 Replacement annual tax sign: THB 20 per vehicle Registration plate: THB 100 per plate For a registration number won at an auction, the fee for using or changing the number is THB 1,500. The total cost depends on the type of vehicle, the type of registration number change, and how many new plates are needed. 6. Submit Your Application Once your documents are ready, submit them to the transport office. The officer will check your documents and approve the application if everything is correct. According to the government service guide, the process may be completed within 1 day after all required documents have been checked and accepted. However, waiting time or system problems are not included in this processing time. Fees must be paid before 3:30 p.m. If payment cannot be completed in time, you may need to return on the next business day. 7. Update the Vehicle Registration Book and Get New Plates After your application is approved and the fees are paid, the officer will update the new registration number in the system and in your vehicle registration book. If new registration plates are required, you will also need to pay the plate fee. Once everything is complete, check that the registration number and vehicle information are correct. Summary: How to Change Your Vehicle Registration Number If you want to change the registration number of a registered vehicle, you can do so for private cars and private motorcycles. Before applying, make sure that: Your vehicle has no unpaid annual tax. There are no registration restrictions. You have the right to use the registration number you want. Your documents are complete. You meet the 1-year requirement, if applicable. If your vehicle is financed, you may need written permission from the finance company. Registration number swaps and auction numbers may also have extra requirements. Before visiting the transport office, it is recommended to check the latest requirements with the Department of Land Transport or the responsible transport office. References: Department of Land Transport and info.go.th
