What You Need to Register a Trailer in Maine

Maine requires registration for most trailers, but the rules depend on the trailer's weight and how you plan to use it. A utility trailer under 3,000 pounds registered gross vehicle weight rating (GVWR) does not need registration if it is used only for personal, non-commercial purposes. Any trailer at or above 3,000 pounds GVWR must be registered, regardless of use. Commercial trailers and those towed for hire always need registration, even if they are lighter.

You will register your trailer through the Maine Bureau of Motor Vehicles (BMV). The process is straightforward: you submit an process, proof of ownership, and payment to your local BMV office or by mail. Registration is valid for one year from the date of issue and must be renewed annually.

Key Takeaways

  • Trailers under 3,000 pounds GVWR used only for personal purposes do not need Maine registration, but heavier trailers or commercial trailers must be registered.
  • You will need a title or bill of sale, proof of ownership, and a completed process form to register a trailer with the Maine BMV.
  • Registration can be completed in person at any Maine BMV office, by mail, or online through the Maine BMV website for renewals.
  • Maine trailer registration costs vary based on the trailer's GVWR and type, and registration is valid for one year from the issue date.

Documents You Need to Register a Trailer

Start by gathering proof of ownership. If the trailer is new, bring the manufacturer's certificate of origin. If you bought it used, you need either a title (if the previous owner had one issued) or a bill of sale signed by the seller. Maine will not issue a title for most trailers, but you still need proof that you own it.

Complete Form MV-3, the process for Registration. You can get this form from any Maine BMV office, read it from the Maine BMV website, or request it by mail. You will also need your Social Security number or federal employer identification number (if registering as a business), your Maine address, and the trailer's vehicle identification number (VIN) if it has one.

Bring or mail these documents along with payment to your local BMV office. If you are registering a trailer with a GVWR of 3,000 pounds or more, the fee structure is based on weight. Contact your local BMV office or check the Maine BMV website for the current fee for your trailer's weight class.

Where and How to Register

Maine has BMV offices in most towns and cities. You can find the office nearest you on the Maine BMV website, which lists addresses, hours, and phone numbers. Walk-in registration is available at all offices during business hours, and most offices do not require an appointment.

You can also register by mail. Send your completed Form MV-3, proof of ownership, and payment to the Maine Bureau of Motor Vehicles, 101 Hospital Street, Augusta, ME 04330. Include a self-addressed stamped envelope if you want your documents returned. Processing by mail typically takes one to two weeks.

For renewals only, you may be able to renew online through the Maine BMV website if your trailer's registration is current and you have no outstanding violations or liens. New registrations must be handled in person or by mail.

Registration Fees and Payment

Maine trailer registration fees depend on the trailer's GVWR. Trailers under 3,000 pounds that do require registration (such as commercial trailers) have a lower fee than heavier trailers. Trailers 3,000 to 10,000 pounds GVWR are charged one rate, and trailers over 10,000 pounds are charged a higher rate. The exact amounts change periodically, so contact your local BMV office or visit the Maine BMV website for current fees.

You can pay by cash, check, or credit card at BMV offices. If registering by mail, include a check or money order made payable to the State of Maine. Do not send cash by mail.

Trailers That Do Not Need Registration

Utility trailers under 3,000 pounds GVWR used only for personal, non-commercial purposes are exempt from Maine registration. This includes small equipment trailers, boat trailers, and utility trailers you use for your own household or recreational needs. However, if you use the trailer commercially—for example, to haul items for a business or for hire—it must be registered regardless of weight.

Even if your trailer is exempt from registration, you still need to follow Maine traffic laws when towing. Your vehicle's towing capacity must not be exceeded, and your trailer must have working lights and brakes if required by law. Check your vehicle's owner manual and Maine's towing regulations to confirm what is required for your specific setup.

Renewing Your Trailer Registration

Trailer registration in Maine expires one year from the date it was issued. You will receive a renewal notice by mail about 30 days before expiration. You can renew in person at any BMV office, by mail, or online if you are renewing an existing registration with no changes.

To renew, bring or mail your renewal notice, proof of ownership (if there have been changes), and payment. If you are renewing online, you will need your registration number and the last four digits of your Social Security number or FEIN. Renewing before the expiration date keeps your registration current and avoids late fees.

What to Do If Your Trailer Is Titled in Another State

If you move to Maine with a trailer that is titled in another state, you will need to register it with Maine. Bring your out-of-state title or bill of sale, completed Form MV-3, and payment to your local BMV office. Maine will not issue a new title for the trailer in most cases, but your registration will be valid in Maine.

If your trailer is financed and the lender holds the title, contact the lender to find out what documents you need to present. Some lenders will issue a copy of the title or a lien release letter that you can bring to the BMV along with your bill of sale.

Frequently Asked Questions

Do I need to register a small utility trailer I use for personal storage?

No, if the trailer is under 3,000 pounds GVWR and you use it only for personal, non-commercial purposes. However, if you use it to haul items for a business or for payment, it must be registered regardless of weight.

What if my trailer does not have a VIN?

Older trailers or homemade trailers may not have a VIN. Bring whatever identifying information you have—the manufacturer's name, model, year, and color—along with your proof of ownership. The BMV can register the trailer without a VIN if you can prove you own it.

Can I register a trailer I just bought without a title?

Yes. If the seller does not have a title, a signed bill of sale is sufficient proof of ownership for registration. Make sure the bill of sale includes the seller's name and signature, the purchase price, the date, and a description of the trailer.

How long does it take to get a trailer registration?

In-person registration is usually completed the same day. By mail, processing typically takes one to two weeks. Online renewals are processed within a few business days.

What happens if I tow a trailer that is not registered?

Operating an unregistered trailer that is required to be registered is a violation. You may receive a citation and be required to register the trailer before you can legally tow it again. Register before towing to avoid fines.