What Maine Requires Before You Register
You cannot register a vehicle in Maine without proof of insurance that meets the state's minimum liability requirements: $50,000 bodily injury per person, $100,000 bodily injury per accident, and $25,000 property damage. The Bureau of Motor Vehicles will not issue plates or complete registration until you present acceptable proof. Maine also mandates personal injury protection and uninsured motorist coverage on every policy, so the proof you submit must reflect a policy that includes all required coverages.
The BMV accepts an insurance ID card from a licensed carrier, a Certificate of Insurance filed electronically by your carrier, or a binder letter on carrier letterhead. A quote, an application in progress, or a payment receipt does not count. If you are adding a newly purchased vehicle to an existing policy, your carrier can issue an updated ID card or file an electronic certificate immediately—but only after you formally add the vehicle to the policy.
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Get Your Free QuoteMaine Minimum Liability Limits
$50,000 / $100,000 / $25,000
Maine requires $50,000 bodily injury per person, $100,000 bodily injury per accident, and $25,000 property damage on every registered vehicle. Personal injury protection and uninsured motorist coverage are also mandatory.
Maine Bureau of Motor Vehicles
How Long Your Existing Policy Covers a Newly Purchased Vehicle
Most carriers extend coverage to a newly acquired vehicle automatically for a limited grace period—typically 14 to 30 days from the purchase date—as long as you already insure at least one vehicle on the policy and you notify the carrier within that window. The grace period exists to give you time to formally add the vehicle and complete registration, but it does not eliminate the requirement to add the vehicle. If you wait beyond the grace period without notifying your carrier, coverage for the new vehicle lapses, and you cannot register it without reinstating coverage first.
The grace period applies only when you are adding a vehicle to an existing multi-car policy. If you do not currently have an active auto insurance policy in Maine, you must purchase a new policy before the BMV will register the vehicle. A lapsed policy, a policy from another state, or a policy that does not meet Maine's mandatory coverage requirements will not satisfy the registration proof requirement.
The BMV will not register your vehicle if your proof of insurance does not show all mandatory coverages—liability, personal injury protection, and uninsured motorist—on a policy issued by a Maine-licensed carrier.
What Happens When You Add the Vehicle to Your Policy
If you already insure one or more vehicles in Maine, adding a second or third car qualifies you for a multi-car discount—but only if every vehicle sits on the same policy and shares the same garaging address. The discount applies to the total policy premium, not to each vehicle individually. Some carriers apply a larger discount when you add a third vehicle than when you add a second, but the discount structure varies by carrier. The multi-car discount does not appear as a separate line item on your proof of insurance; it is reflected in the total premium the carrier files with the state.
When you add the vehicle, the carrier issues an updated insurance ID card and files an electronic Certificate of Insurance with the BMV. Maine participates in electronic filing, so most carriers transmit proof directly to the state's system within minutes. You can verify that the BMV received the filing by checking your vehicle record online or calling the BMV directly. If the electronic filing does not appear in the BMV system within 24 hours, contact your carrier to confirm the filing was transmitted successfully.
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Registration Without an Existing Policy
If you do not currently have an active auto insurance policy, you must purchase a new policy before the BMV will register the vehicle. The carrier will issue an insurance ID card and file a Certificate of Insurance electronically once the policy is active. You cannot register the vehicle with a quote, a binder that has not yet been finalized, or proof from a policy that does not include the vehicle you are registering.
New policies in Maine must include liability at the state minimums, personal injury protection, and uninsured motorist coverage. Collision and comprehensive are optional, but if you financed the vehicle, your lender will require both. The carrier will not issue proof of insurance until you pay the first premium installment and the policy is active. Some carriers allow same-day binding and electronic filing; others require 24 to 48 hours to process the application and transmit the certificate to the BMV.
If you are registering a vehicle titled to a household member who does not have their own policy, you can add that vehicle to your policy as long as the household member is listed as a driver. The BMV does not require the vehicle owner and the policyholder to be the same person, but the vehicle must appear on a policy that covers drivers in the household where the vehicle is garaged.
Licensed Carriers Writing in Maine
16 carriers
Sixteen carriers write auto insurance in Maine and can file electronic Certificates of Insurance with the BMV. Carrier availability and multi-car discount structures vary, so comparing quotes across carriers that write multiple vehicles is the most reliable way to confirm total cost.
Maine Bureau of Insurance
What the BMV Does If You Register Without Insurance
Maine law prohibits operating or registering a vehicle without insurance. If the BMV discovers that a registered vehicle is uninsured—either because the policy lapsed or because the electronic filing was never received—the Bureau of Motor Vehicles can suspend your registration and your driver license.
If you let your policy lapse after registration, your carrier is required to notify the BMV electronically. The BMV will mail a notice demanding proof of insurance within a set window. If you do not respond with acceptable proof, the suspension takes effect automatically. Driving on a suspended registration is a separate violation that carries additional fines and potential license suspension.
Compare Carriers That Write Multiple Vehicles in Maine
If you are adding a vehicle to an existing policy or purchasing a new policy to register your first car, compare quotes from carriers that write multi-car policies in Maine. Sixteen carriers are licensed to write auto insurance in the state, and each applies its own multi-car discount structure, base rate, and underwriting rules. A smaller discount on a lower base rate can produce a lower total premium than a larger discount on a higher base rate, so the only way to confirm total cost is to request quotes that include every vehicle you plan to insure on the same policy.
Use the site's comparison tool to request quotes from carriers writing in Maine. Enter every vehicle you plan to register, the garaging address for each, and the coverage levels you need to meet state requirements or lender mandates. The tool routes your request to carriers that write multi-car policies and can file electronic proof with the BMV immediately after binding.