A car registration certificate proves you own your vehicle and that it's registered to drive on public roads

Your car registration certificate (often called a rego certificate or registration papers) is a legal document issued by your state or territory's transport authority. It shows your name as the registered owner, the vehicle's details (make, model, engine number, chassis number), and the dates your registration is current. Without it, you cannot legally drive on public roads, and you cannot sell the vehicle to someone else.

The certificate itself is a physical document — usually a card or printed sheet — that you keep with you or at home. It is different from your vehicle's roadworthy certificate (which proves the car is safe to drive) and your insurance documents (which prove you have cover). You need all three to drive legally, but the registration certificate is the one that proves ownership and registration status.

Each state and territory in Australia runs its own registration system, so the exact look of the certificate and the process to get one varies by location. However, the purpose and what it contains are the same everywhere.

Key Takeaways

  • A registration certificate is issued by your state or territory transport authority and proves you own the vehicle and it is registered to drive.
  • You must carry the certificate when driving, or keep it at home and be able to produce it if asked by police.
  • Registration must be renewed each year (or every two years in some states), and you renew it through your state's transport authority, not through a dealer.
  • If you lose the certificate, you can request a replacement from your state's transport authority, usually online or by mail.
  • When you sell a car, the new owner must re-register it in their name; the certificate does not transfer automatically.

What information appears on a registration certificate

The certificate lists the registered owner's name and address, the vehicle's registration number (the plate number), the make and model, the engine number, the chassis number (also called the VIN or vehicle identification number), the date of first registration, and the current registration expiry date. Some certificates also show the vehicle's tare weight and seating capacity.

The registration number on the certificate matches the number plate on your car. This is how police and other authorities link the physical vehicle to the registered owner. If the details on the certificate do not match the vehicle (for example, if the chassis number is wrong), the registration is invalid and you cannot legally drive the car.

How to get a registration certificate when you buy a car

When you buy a car from a dealer or a private seller, the seller must transfer the registration to you. This is not automatic — you must contact your state's transport authority and complete a transfer form. The seller provides you with the current certificate and a transfer document (the exact name varies by state; it might be called a notice of disposal or transfer notice).

You then lodge the transfer with your state's transport authority, usually online through their website or by mail. You will need to provide proof of identity, proof of address, the transfer document signed by the seller, and proof that you own the vehicle (usually the bill of sale or receipt). The authority will issue a new certificate in your name. This process usually takes one to two weeks, though it can be faster if you do it online.

Until the transfer is complete and the new certificate is issued, you are not the registered owner and cannot legally drive the vehicle. Some states allow you to drive it for a short period (usually up to 14 days) on the old certificate while the transfer is being processed, but you must check your state's rules. Do not assume you can drive it — contact your transport authority first.

Renewing your registration each year

Registration must be renewed before the expiry date shown on your certificate. In most states, you renew it every 12 months; in some, you can renew for two years at once. You cannot drive a vehicle with expired registration — it is illegal and you can be fined.

You renew registration through your state's transport authority website, by phone, or by mail. You will need to provide the current certificate, proof of identity, and proof of address. You will also need to show that the vehicle has a current roadworthy certificate (also called a safety inspection or pink slip, depending on your state). Some states do not require a roadworthy certificate for every renewal, but most do.

The cost of renewal varies by state and by the vehicle's weight. You pay the renewal fee when you renew. Once approved, the authority will issue a new certificate with a new expiry date, or they will send you a renewal notice to display in your windscreen while the new certificate is being printed.

What to do if you lose or damage your registration certificate

If your certificate is lost, stolen, or damaged, you can request a replacement from your state's transport authority. You will need to provide proof of identity and proof of address. Some states allow you to request a replacement online; others require you to visit an office or mail in a form.

While you wait for the replacement, you can usually drive the vehicle if you have proof that you have requested it (for example, a reference number from the online request or a receipt from the post office). However, you should carry this proof with you. If you are stopped by police and cannot show either the original certificate or proof of a replacement request, you may be fined.

The replacement usually arrives within one to two weeks. The cost is lower than the original registration fee, and the new certificate will have the same expiry date as the original.

Transferring registration when you sell your car

When you sell your car, you must notify your state's transport authority that you no longer own it. You do this by completing a notice of disposal or transfer form (the exact name depends on your state) and lodging it with the authority. You provide the buyer's details and the date of sale.

The buyer then lodges a transfer form on their end to register the vehicle in their name. Until they do, you remain the registered owner on the certificate, which means you are liable for any fines, tolls, or other charges on the vehicle. This is why it is important to complete the transfer as soon as you sell — do not wait for the buyer to do it.

The buyer cannot legally drive the vehicle until they have a certificate in their name. If they drive it before that, they are breaking the law. Make sure the buyer understands this and knows how to complete the transfer in their state.

Registration certificate vs. other car documents

It is straightforward to confuse the registration certificate with other documents you need to drive legally. Here is what each one is for:

Registration certificate: Proves you own the vehicle and it is registered to drive. Issued by your state's transport authority. Must be renewed annually or every two years.

Roadworthy certificate (pink slip, safety inspection): Proves the vehicle is safe to drive. Issued by a licensed mechanic or testing station. Usually valid for 12 months. Required to renew registration in most states.

Insurance certificate or policy: Proves you have insurance cover. Issued by your insurance company. Required by law to drive on public roads. Does not prove ownership or registration.

Driver's licence: Proves you are authorised to drive. Issued by your state's transport authority. Not the same as vehicle registration.

You need all of these to drive legally. The registration certificate is the one that proves the vehicle itself is registered; the others prove you are insured, the car is safe, and you are may have access to to drive.

Frequently Asked Questions

Do I have to carry my registration certificate when I drive?

Yes. You must have it with you or be able to produce it within a reasonable time if asked by police. If you cannot, you can be fined. Many people keep it at home and carry a photo or digital copy, but check your state's rules — some require the original document in the vehicle.

What happens if my registration expires?

You cannot legally drive the vehicle. If you are caught driving with expired registration, you will be fined. Renewal is straightforward and can usually be done online, so there is no reason to let it lapse. Set a reminder a month before the expiry date.

Can I drive a car I just bought before the new certificate is issued?

It depends on your state. Some states allow you to drive on the old certificate for up to 14 days while the transfer is being processed. Others do not. Contact your state's transport authority before you drive — do not assume it is legal.

What if the details on my registration certificate are wrong?

Contact your state's transport authority when ready. If the chassis number, engine number, or owner details are incorrect, the registration is invalid. The authority can issue a corrected certificate, usually at no cost if the error was theirs.

Do I need to re-register my car if I move to a different state?

Yes. Each state runs its own registration system. If you move, you must transfer the registration to your new state within a set time (usually 14 days). Contact the new state's transport authority for the process.