What a Colorado bill of sale is and why you need one

A Colorado bill of sale is a written record that you and the other party sign to document the sale of a vehicle. It shows who owned the car, who bought it, when the sale happened, and how much was paid. Colorado law does not require a bill of sale to transfer ownership — the title document itself is what the state uses to record who owns the vehicle — but a bill of sale protects both the buyer and seller by creating a paper trail if questions come up later.

The bill of sale becomes important if there is a dispute about whether the sale actually happened, what price was agreed to, or what condition the vehicle was in at the time of transfer. If you sell a car without one and the buyer later causes an accident or racks up parking tickets, you may have trouble proving you no longer owned it. If you buy without one, you have no written proof of the price you paid or the seller's promises about the vehicle's condition.

Key Takeaways

  • Colorado does not legally require a bill of sale, but creating one protects both buyer and seller by documenting the sale date, price, and vehicle details.
  • The bill of sale should include the vehicle identification number (VIN), odometer reading, sale price, and signatures from both buyer and seller.
  • You can use a form provided by the Colorado Division of Motor Vehicles, a template from a title service, or write your own as long as it includes the essential information.
  • The bill of sale is separate from the title document and does not replace it — you still need to transfer the title through the Colorado DMV.
  • Keep a copy of the signed bill of sale for your records even after the title transfer is complete.

What information must go on a Colorado bill of sale

The bill of sale should include the vehicle's full identification number (VIN), the make, model, and year, and the odometer reading at the time of sale. Write down the exact sale price in both numbers and words to avoid confusion. Include the date of the sale and the full names and addresses of both the seller and buyer.

Add a statement that the seller is transferring ownership of the vehicle to the buyer in the condition described. If the vehicle has known mechanical problems or damage, note them on the form — this protects the seller from later claims that the vehicle was misrepresented. Both parties should sign and date the document. Some sellers and buyers also note the method of payment (cash, check, or transfer) and whether any trade-in was involved.

Where to find a Colorado bill of sale form

The Colorado Division of Motor Vehicles does not publish an official bill of sale form, but you can find templates through several sources. The DMV website links to resources for vehicle transactions, and many title services and legal document websites offer free Colorado-specific templates that meet state requirements.

You can also write your own bill of sale from scratch as long as it includes the essential details: VIN, vehicle description, sale price, date, and signatures from both parties. Some buyers and sellers use a straightforward letter format. The form does not need to be notarized in Colorado, though having it notarized adds an extra layer of proof if a dispute arises later.

How the bill of sale fits into the title transfer process

The bill of sale is a separate document from the title itself. After you sign the bill of sale, the seller must still transfer the title to the buyer through the Colorado DMV. The seller completes the back of the title document (also called the certificate of ownership) and submits it to the DMV along with the required fees and any other documents the DMV requests.

The buyer then receives a new title in their name. The bill of sale serves as supporting documentation that proves the transaction took place, but it does not complete the ownership transfer on its own. Keep the bill of sale with your records even after the title transfer is finished — you may need it for insurance, warranty claims, or to resolve disputes about the sale.

Differences between a bill of sale and the title document

The title (certificate of ownership) is the official state document that shows who legally owns the vehicle. Only the DMV can issue or transfer a title. The bill of sale is a private agreement between buyer and seller that documents the transaction but has no legal standing with the state.

Think of it this way: the title is what the state recognizes as proof of ownership. The bill of sale is what you and the other party recognize as proof that a sale happened. You need both — the title to register the vehicle in your name, and the bill of sale to protect yourself if questions come up about the terms of the sale or whether it occurred at all.

What to do with your signed bill of sale

Make a copy of the signed bill of sale for your records before you hand over the original to the other party. If you are the seller, keep your copy in case the buyer later claims the vehicle had problems you did not disclose, or in case you need to prove you no longer owned it. If you are the buyer, keep your copy along with the title paperwork to document what you paid and the condition of the vehicle when you took ownership.

Store the bill of sale somewhere safe — a file folder with your vehicle records, a safe deposit box, or a digital scan in cloud storage. You do not need to file it with the DMV or any other agency, but having it available protects you if a dispute arises months or years later.

Frequently Asked Questions

Do I have to use an official Colorado DMV form for the bill of sale?

No. Colorado does not have an official DMV bill of sale form. You can use a template from a title service, read a free Colorado-specific template online, or write your own as long as it includes the VIN, vehicle description, sale price, date, and signatures from both parties.

What if I sell a vehicle and the buyer does not transfer the title right away?

You are still liable for the vehicle until the title is transferred to the buyer's name. Keep a copy of the signed bill of sale as proof that you sold it on a specific date. If the vehicle is involved in an accident or gets parking tickets before the buyer transfers the title, you can use the bill of sale to show the DMV and law enforcement that you no longer owned it.

Can I sell a vehicle without a bill of sale in Colorado?

Yes, Colorado does not legally require a bill of sale. However, selling without one leaves both you and the buyer without written proof of the transaction. If a dispute arises later about the price, condition, or whether the sale actually happened, you will have no documentation to back up your position.

Does the bill of sale need to be notarized?

No, notarization is not required in Colorado. However, having the bill of sale notarized adds extra proof that both parties signed it willingly and that their signatures are genuine. This can be helpful if a dispute ends up in court, though it is not necessary for the sale to be valid.

What happens if I lose my copy of the bill of sale after the sale is complete?

If the title has already been transferred to the buyer's name, losing the bill of sale is less critical because the DMV records show who owns the vehicle. However, if a dispute arises about the terms of the sale or the vehicle's condition, you will have no written record to reference. Keep copies in multiple places to avoid this problem.