Free Connecticut Vehicle Bill of Sale (Form H-31)

Last Updated: March 2026

A Connecticut vehicle bill of sale is a legal document that serves as a formal receipt and proof of purchase for a private vehicle transaction. It outlines the specific terms of the sale, the purchase price, and the identifying details of both the buyer and the seller, providing essential legal protection for both parties after the vehicle changes hands.

In Connecticut, the Department of Motor Vehicles (DMV) legally requires a bill of sale to officially transfer a title and register a vehicle. The state provides an official document, known as Form H-31, which is the most widely accepted format. Connecticut law does not require a vehicle bill of sale to be notarized for a private party transfer to be valid; however, an accurate odometer disclosure and a properly assigned certificate of title are mandatory requirements for the buyer to successfully register the vehicle.

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Official Form Form H-312026 Version

Connecticut Automobile Bill of Sale

Official printable document required for the private sale and title transfer of a vehicle in Connecticut. This PDF is optimized for clear printing and accepted by local county tax and DMV offices.

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How to Sell a Vehicle in Connecticut: Step-by-Step Guide

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Step 1: Negotiate the final purchase price and agree upon a secure payment method. Once the terms are set, gather the essential vehicle information, including the Vehicle Identification Number (VIN), make, model, and year.

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Step 2: Complete the Connecticut Bill of Sale (Form H-31) by accurately entering the buyer and seller details, the exact purchase price, and the current odometer reading. Both the buyer and seller must sign and date the document.

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Step 3: While Connecticut does not require a notary public to witness or stamp the bill of sale, both the buyer and seller may mutually choose to have it notarized at a local bank or shipping store for additional legal protection and peace of mind.

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Step 4: The seller must properly endorse and sign over the Certificate of Title to the buyer. Under strictly enforced Connecticut law, the seller must remove their license plates and keep them. The seller must then cancel their vehicle registration online or at the DMV prior to canceling their auto insurance.

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Step 5: The buyer must take the endorsed title, the completed Bill of Sale, a filled-out Application for Registration and Title (Form H-13B), proof of valid auto insurance, and state ID to their local CT DMV office. The buyer must also provide proof of a passing Connecticut emissions test if the vehicle falls within the required age parameters.

Frequently Asked Questions About Connecticut Vehicle Bills of Sale

Do I need a bill of sale to sell a vehicle in Connecticut?

Yes. The Connecticut DMV strictly requires a bill of sale to prove the change in ownership. The buyer must present it to the DMV to register the vehicle, complete the title transfer, and accurately calculate the state sales tax.

Does a Connecticut vehicle bill of sale need to be notarized?

No. Connecticut law does not mandate that a vehicle bill of sale be notarized. The standard signatures of the buyer and the seller are legally sufficient for the DMV to accept the document.

Can I write my own bill of sale in Connecticut?

Yes, you can write your own generic bill of sale provided it includes all required information, such as buyer and seller details, vehicle description, VIN, purchase price, and signatures. However, using the official CT DMV Form H-31 is highly recommended to ensure no registration delays occur.

Are private vehicle sales in Connecticut considered 'as-is'?

Yes. Private vehicle sales in Connecticut are considered strictly 'as-is' transactions. The Connecticut Lemon Law only applies to new and certain used vehicles purchased from licensed dealerships, meaning private buyers assume all risks regarding the vehicle's condition after the sale.

How is sales tax calculated on a private vehicle sale in Connecticut?

In Connecticut, the state calculates sales tax on a private vehicle sale at a rate of 6.35% (or 7.75% for vehicles priced over $50,000). The DMV bases this tax on either the NADA clean trade-in value or the actual purchase price listed on the bill of sale, whichever amount is higher.

What documents does the buyer need to bring to the Connecticut DMV?

To legally register and title the vehicle, the buyer must bring the properly assigned original Certificate of Title, a completed Bill of Sale (Form H-31), an Application for Registration and Title (Form H-13B), current proof of Connecticut auto insurance, a valid driver's license or state ID, and an official emissions test report if the vehicle is subject to testing.

Automobile Bill of Sale by State

Select your state below to find specific requirements and download your free legal form.

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