Go to a municipal town office near you. If your local municipal town office does not engage in the registration of motor vehicles, you must instead visit a Maine BMV (Bureau of Motor Vehicles).

• Proof of Insurance
• Title Signed Over by the Previous Owner: Required for vehicle models 25 years old and newer
• White and Yellow Copies of the Registration Application and Excise Tax Receipt

Out-of-State Purchase

• Signed Bill of Sale: Required when purchased from an out-of-state dealer
• Maine Sales Tax: 5.5% of the purchase price

Notes

• You must pay the excise (municipal) tax at your town office first.
• If your local town office does not issue registrations, you can finish the process at a BMV branch office.

Source: Maine Bureau of Motor Vehicles (Register A Passenger Vehicle)

Maine requires motorboats of any size to be registered before use on Maine waters unless an exemption applies. New boat registrations are completed in person.

• Bill of Sale or dealer paperwork, showing the boat information and purchase details.
• Boat Registration Form
• Excise tax payment, paid to the proper town before registration when required.
• Payment for registration fees.
• Proof of sales tax paid, or Use Tax Certificate, required for new registrations.
• Prior Maine registration number, if the boat was previously registered in Maine.

Out-of-State Purchase

• Proof of sales tax paid, or Use Tax Certificate, if sales tax was not collected or proof is needed.
• Registration information, if the boat was previously registered.

Source: Maine Department of Inland Fisheries & Wildlife (Boating; Boat Registration Form)

Maine does not require a new firearm owner to register a firearm.