Does the car registration certificate need to be changed when you change your permanent address?

Changing your permanent address is an important administrative step that brings several responsibilities—not only updating your ID card but also your vehicle documents.One frequently asked question is: Do I need to change my car registration certificate after changing my address?
The answer is yes, it is mandatory. Here’s why, when, and how it’s done.

Legal requirements and owner obligations

According to Bulgarian law, when your place of residence changes, you're required to update the vehicle's registration in the traffic police system (KAT). This ensures the Ministry of Interior (MVR) holds accurate data, especially during checks, official notifications, or administrative procedures.

Which documents need to be changed?

When changing your address, you must update:

• Your ID card – within 30 days of the address change;
• Your vehicle registration certificate (Part II – small certificate) with the new address;
• Possibly the large registration certificate (Part I), if there are inconsistencies or missing info.
  Important: Changing your ID alone does not automatically update the address in the KAT system—you must register it separately.

Vehicle certificate update procedure

Steps for updating your registration certificate:

1. Update your ID card – Required before updating vehicle info.
2. Visit KAT in person (or send an authorized representative).
3. Required documents:

• Application form (filled out on-site);
• New ID card;
• Both vehicle registration certificates (small and large);
• Proof of vehicle ownership;

• Paid fee (approx. 10–15 BGN).
  
  4.Receive new small registration certificate – With your updated address.

Deadlines

Once your ID is updated, you have 30 days to submit the change to KAT. Missing this deadline may lead to a fine under the Road Traffic Act.

Can it be done online?

Currently, there is no fully online procedure for this. However, some preliminary steps (e.g. fee payment) may be available through the MVR website or the state’s e-services portal.

Will the license plate change?

Not usually. Your license plate stays the same unless you move to a different administrative region, in which case new registration and plates may be required.

Does it affect your vehicle inspection?

The address change doesn’t affect the validity of your technical inspection, but mismatched info in your documents might cause issues during your next check-up.

What if you sell the car after an address change?

Selling a car without updated documents can lead to delays or administrative issues during the transfer. Always ensure your registration info is current.

What if the car is leased or under a loan?

Notify the leasing or credit company of your new address. They may also require you to update your insurance documents.

The role of your insurer or broker

Your insurance broker (e.g. I&G Brokers) can assist in updating policies and reflecting the new address. In some cases, your new address may affect risk assessments—especially for comprehensive (Casco) insurance if you move to a region with higher accident or theft rates.

Conclusion

Changing your permanent address isn’t just a formality—it involves legally required updates, including to your car’s registration certificate. To stay compliant and avoid fines or future issues, update your data at KAT promptly. If you need help with the process, the I&G Brokers team is here to assist you—quickly, clearly, and professionally.