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

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

A Connecticut DMV bill of sale (Form H-31) is a written record that documents a private vehicle sale and helps verify the details of the transaction. Both the buyer and seller are expected to sign, as the form is required when registering a privately purchased vehicle. Registration is typically expected to be completed within 20 days of the sale.

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Last updated March 26th, 2026

A Connecticut DMV bill of sale (Form H-31) is a written record that documents a private vehicle sale and helps verify the details of the transaction. Both the buyer and seller are expected to sign, as the form is required when registering a privately purchased vehicle. Registration is typically expected to be completed within 20 days of the sale.

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How to Register a Vehicle

Visit your nearest DMV location to register your new or used vehicle. Be sure to come equipped with the materials listed below:

  • The title is under the new owner’s name.
  • The Bill of Sale was acquired at the time of sale.
  • An approved emissions test – in congruence with Sec. 14-164c. (You may bring your vehicle to one of Connecticut’s emissions testing centers for evaluation. Some vehicles do not require an emissions test, and find out whether or not your vehicle is excluded by visiting the nearest VIN station for verification.)
  • A completed copy of Form H-13B (the Connecticut Registration and Title Application).
  • A valid insurance ID card that contains the name of the person registering the vehicle.
  • A standard form of identification (driver’s license, state ID, passport, learner’s permit, etc.)

Payment for the process (fees range depending on the type of vehicle being registered).

How to Register a Vessel

The State of Connecticut obligates any vessel with a motor, sailboat, or personal watercraft (jet ski) to be registered to be operated on a body of water within or on the state’s coastline. If you wish to use an out-of-state registered vessel on state waterways, you may do so for a maximum of 60 days.

You can then visit any Connecticut DMV office with the following paperwork for submission:

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