Underinsured Motorist Coverage
When the other driver's coverage falls short.
If the at-fault driver did not carry enough insurance to cover your injuries, your own underinsured motorist coverage can pay the difference, and Larson Law will help you claim it.
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How underinsured motorist coverage protects you.
A serious crash is expensive long after the day it happens, and in Massachusetts the driver who caused it may not carry nearly enough insurance to cover what you have lost. State law sets the minimum liability a driver must buy very low, so a single hospital stay can exhaust an at-fault driver’s entire policy while your bills, lost income, and long-term needs keep climbing. That gap is exactly what underinsured motorist coverage is built to close.
Underinsured motorist coverage, often shortened to UIM, is protection you buy on your own auto policy. It steps in when the person who injured you is legally at fault but does not have enough liability insurance to pay for the full harm they caused. Instead of absorbing the shortfall yourself, you can turn to your own coverage to make up the difference, up to the limits you purchased. It is one of the most valuable and least understood parts of a Massachusetts auto policy.
These claims are not as simple as they sound. Your own insurer becomes the party on the other side of the table, and it has every incentive to value your injuries as low as the at-fault driver’s insurer would. The rules on when the coverage applies, how policies can and cannot be combined, and what you must do before collecting are strict, and a misstep can cost you the benefit entirely.
That is where having a lawyer matters. Larson Law reviews every policy that might apply, proves the full value of your injuries, and holds your own insurer to the coverage you paid for, the same way we would pursue any at-fault party through our Boston personal injury attorney practice. The goal is a recovery that reflects your real losses, not the small number an adjuster hopes you will accept.
Because Massachusetts sets its required liability limits so low, underinsurance is far more common than most drivers realize, and it tends to surface at the worst possible moment, after a serious injury, when the at-fault policy turns out to be a fraction of what the harm actually costs. That is not a reason for despair; it is a reason to look carefully at your own policy and any others in your household, because the protection you may have quietly purchased years ago can become the most important coverage in the entire case.
Every claim at the firm is handled under the direction of Daniel J. Larson, whose background and credentials are set out on his attorney profile. From the first call, you work directly with a lawyer who understands both the injury and the insurance side of an underinsured motorist claim and can explain, in plain terms, where yours stands.
What our clients say.
We pursue every dollar of coverage available.
- We track down and review every insurance policy that could apply to your crash, not just the obvious one.
- We prove the full value of your injury so your own insurer cannot treat a serious claim as a minor one.
- We handle the recorded statements and paperwork your insurer requests so nothing you say is used against you.
- We know the Massachusetts rules on when this coverage applies and how policies can and cannot be combined.
- We build each claim on medical proof and documentation, not on a rushed phone call with an adjuster.
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- Same-day response
- Honest advice from day one
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How these coverage claims work in Massachusetts.
The coverage the law requires
Massachusetts requires every auto policy to include uninsured motorist protection, and it allows drivers to add underinsured motorist coverage on top of it, under G.L. c. 175, § 113L. That statute defines when the coverage applies, including the central situation where an at-fault driver carries a liability policy whose limits are simply too low to cover the harm they caused. This matters because it is the legal hook that lets you collect from your own insurer once the at-fault policy is exhausted, rather than being left to absorb the shortfall yourself. The same law requires insurers to offer the coverage and to notify policyholders of their right to buy it, and it confirms that the protection can reach hit-and-run drivers and cases where the at-fault insurer has become insolvent, closing gaps that would otherwise leave a badly injured person with no realistic source of recovery. The coverage is not an optional frill; it is a legislatively mandated backstop, and understanding that is the starting point for valuing any serious crash claim where the other driver was underinsured.
How a claim actually proceeds
An underinsured motorist claim generally follows, rather than replaces, the underlying injury case. You first pursue the at-fault driver and, in a crash, your own no-fault benefits under the Personal Injury Protection system, so understanding how first-dollar medical coverage and the state’s threshold for stepping outside no-fault operate is part of positioning the claim correctly from the very beginning. Only after the at-fault driver’s liability limits are genuinely exhausted does the underinsured coverage come into play, and before it pays, your own insurer is entitled to confirm both that the other policy is truly spent and that your damages exceed it. That sequence rewards careful, early documentation of both fault and injury, because the proof you assemble for the underlying claim is the very same proof the coverage claim will later rise or fall on. In practice, the same crash handled thoroughly as a Boston car accident lawyer matter quietly builds the record that makes the coverage claim winnable months later, long after memories have faded and vehicles have been repaired.
Limits, deadlines, and the fine print
Section 113L does more than create the coverage; it also restricts how the coverage is counted. Policies generally cannot be stacked or simply added together across multiple vehicles, and detailed rules decide which policy a driver, a passenger, or a resident relative may look to when more than one exists. Because those rules determine how many dollars are actually available to an injured person, reading them correctly can change the value of a claim dramatically, sometimes by more than the injuries themselves are worth. The underlying tort claim still runs on the standard Massachusetts limitations period of three years from the date of injury under G.L. c. 260, § 2A, and letting that deadline pass can extinguish the entire case, coverage included, no matter how strong it once was. Coverage claims can also carry their own contractual notice conditions buried in the policy language. Because the fine print is where these claims are most often quietly won or lost, it deserves close attention long before any settlement figure is ever discussed.
When you and your own insurer disagree
The most uncomfortable feature of an underinsured claim is that the company you have paid premiums to for years becomes your adversary the moment you file. It may dispute who was at fault, argue that your injuries are less serious than the medical records show, or offer a small fraction of the claim’s value and simply wait to see whether you accept out of frustration or financial pressure. Most auto policies require these disagreements to be resolved through arbitration rather than a jury trial, which changes both the timeline and the strategy, and an insurer that handles a valid claim unreasonably can expose itself to additional consequences under Massachusetts consumer-protection law. Knowing how the arbitration process works, presenting the claim with organized medical proof rather than argument alone, and refusing to be worn down by delay are what keep a coverage dispute from ending in the quiet, discounted settlement the insurer is hoping for.
When underinsured motorist coverage matters most.
When minimum-limits drivers cause major injuries
The most common reason an injured person needs this coverage is straightforward: the at-fault driver bought only the minimum insurance the state requires, and the crash caused far more harm than that minimum can ever pay for. A driver carrying the lowest legal limits can leave someone with a permanent injury holding tens of thousands of dollars in bills the liability policy will never reach, no matter how clearly the other driver was to blame or how catastrophic the consequences. Underinsured motorist coverage is what turns that dead end into a genuine source of recovery, which is why the strategy in these cases should be driven by the size and permanence of the injury rather than the size of the other driver’s policy. Recognizing early that a claim will outgrow the available liability limits changes how the case is documented, valued, and negotiated from the first week, and it prevents the common mistake of settling with the at-fault insurer before the coverage claim has even been considered.
Catastrophic harm and cases that exceed every policy
Coverage matters most precisely when the injuries are most serious. A crash that produces a life-altering, permanent injury can generate medical and wage losses that dwarf even a well-insured driver’s limits, and a careful accounting of what the case is truly worth often reveals damages several times larger than the available liability coverage. In those cases the underinsured benefit is not a modest supplement; it is the difference between partial and meaningful compensation for what may be a lifetime of consequences, ongoing treatment, and lost earning power. Larger vehicles raise the stakes even further, because the forces involved tend to produce catastrophic rather than minor injuries, and the same principles our Boston truck accident lawyer team applies to devastating crashes carry directly into how a coverage claim is built, valued, and proven against an insurer determined to pay as little as it can.
Multi-victim crashes and shared policies
A single liability policy is often not nearly enough when one crash injures several people at once. When multiple victims must share one at-fault policy, each person’s portion can be small, and the limits are frequently exhausted before anyone involved is made whole. Underinsured motorist coverage on your own policy is what fills that shortfall, and the rules on which household policy applies, and whether more than one can be reached, decide how much is genuinely available to you. Sorting out those overlapping and competing policies early, before anyone signs a release, is one of the most valuable things a lawyer does in these cases, because a release signed in the wrong order or without understanding its effect can quietly forfeit coverage you would otherwise have been entitled to collect. The order of settlement, and the consent of your own insurer, are details that decide real dollars.
Hit-and-run and phantom-vehicle crashes
Not every serious crash comes with an identifiable, insured driver to hold responsible. A hit-and-run driver who flees the scene, or a phantom vehicle that forces you off the road without ever making contact, can leave you badly hurt with no one’s liability policy to turn to. In those situations the uninsured side of the same coverage steps in and treats the unknown driver as if they were uninsured, so your own policy becomes the source of recovery for injuries someone else caused. These claims come with strict and early reporting requirements, and prompt notice to the police and to your own insurer is frequently what preserves them, which is why acting quickly after an unidentified driver causes a crash matters so much. Corroborating evidence, from witness accounts to physical damage, can be decisive when the other driver cannot be found.
What a full recovery needs to account for.
A fair coverage claim has to account for far more than the bills already sitting on the kitchen table. Serious injuries carry costs that unfold over years, and an underinsured motorist claim is often the last available source of money to pay for them, so undervaluing the injury means leaving real losses uncompensated for good.
A complete claim reflects the future medical care an injury will require, the income lost during recovery, and any lasting reduction in the ability to earn a living. It also accounts for the physical pain and the disruption to daily life an injury causes, which are real losses even though no bill measures them. When a crash takes a life, the coverage can extend to the family’s claim for their loss, and every one of these categories deserves to be documented and pressed rather than assumed away.
Because the insurer on the other side of an underinsured claim is your own, it is easy to assume the process will be cooperative. It usually is not. The same tactics used to minimize any injury claim, quick low offers, requests for recorded statements, and arguments that the injury is not as serious as the records show, appear here too. Building the claim on thorough medical proof and a clear picture of the long-term impact is what keeps a coverage claim from being quietly settled for a fraction of its worth.
None of this is meant to be sorted out alone while you are still recovering. The value of a coverage claim depends on connecting today’s injury to tomorrow’s consequences with medical evidence, and on understanding exactly which policies and limits apply to your situation. That is work a lawyer does so that you can focus on healing, and it is why a free early conversation, before you speak with an adjuster, so often changes the outcome of a claim that would otherwise be settled for far less than it is worth.
Documentation is what separates a coverage claim that pays fully from one that pays almost nothing. Insurers evaluating an underinsured claim look closely at any gaps in treatment, at the exact language in early medical notes, and at anything you said before you understood how badly you were hurt, and they use each of those details to argue the harm is smaller than it truly is. Building the claim the right way means tying the diagnosis to a clear and consistent record of treatment, obtaining informed opinions about the care and limitations that lie ahead, and translating a permanent injury into the concrete future costs it will impose over a lifetime. It also means being deliberate about the order in which claims are resolved, because settling with the at-fault driver without first protecting the coverage claim can forfeit it entirely. These are not steps most injured people can manage while they are still in treatment and trying to hold their lives together, and they are precisely the steps that decide whether a policy you quietly paid for actually delivers what it promised at the one moment you truly need it.
Medical Bills and Future Care
Lost Wages and Earning Capacity
Pain, Suffering, and Hardship
Wrongful Death of a Loved One
Steps that protect a coverage claim.
Get medical care and keep documents
See a doctor promptly and hold on to every bill, report, and photographs from the crash. Prompt treatment protects your health and builds the record that later proves how serious the injury really is.
Find every insurance policy in play
The other driver's policy is only the starting point. Your own underinsured coverage, and any household policy, may apply, so every declarations page must be found and read to learn the actual limits.
Speak to a lawyer before you settle
Insurers move quickly to close claims cheaply. Before you give a statement or accept an offer, a free case review shows what your coverage provides and shields the claim from an early, costly mistake.
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Talk to us about your underinsured motorist coverage.
If an at-fault driver’s insurance will not cover what your injury has cost you, your own underinsured motorist coverage may be the answer, and you do not have to navigate it alone. Talk with our team, or with our Boston personal injury attorney office, for a free, no-pressure review of your crash, your policies, and the coverage you may be owed.
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Larson Law represents injured people across Massachusetts in the full range of accident and injury claims, from car and truck crashes to the catastrophic injuries that make coverage like this decisive, and we pursue every source of recovery that may be available to you.
Coverage questions, answered plainly.
What does this type of coverage actually do?
It pays for your injuries when an at-fault driver does not carry enough liability insurance to cover them. Instead of absorbing the shortfall yourself, you claim the difference from coverage on your own auto policy, up to the limits you bought. It is protection for the gap the other driver leaves.
How is it different from uninsured motorist coverage?
Uninsured coverage applies when the at-fault driver has no insurance at all or cannot be identified, such as a hit-and-run. Underinsured coverage applies when the driver has insurance, but the limits are too low to pay for the harm. Massachusetts law addresses both in the same section.
Do I already have this coverage on my policy?
Often yes, but not always at a useful amount. Massachusetts requires uninsured coverage and lets you add the underinsured type, so it depends on what you elected and at what limits. Reviewing your declarations page, and any other policies in your household, is the first step to knowing what protection you hold.
Can my own insurer really fight my claim?
Yes. Once you make a claim on your own policy, your insurer stands in the shoes of the at-fault driver’s insurer and can dispute fault, the seriousness of your injury, and the value of your losses. It is your insurer in name only; on this claim, its financial interest is opposite to yours.
Do I have to settle with the other driver first?
Generally you must exhaust the at-fault driver’s liability limits before collecting the underinsured benefit, and your insurer is entitled to confirm that. The order and timing matter, and settling the underlying claim the wrong way can jeopardize the coverage claim, so get advice before you sign anything.
Can I add together the limits on more than one policy?
Usually no. Massachusetts law limits stacking, so coverage from multiple vehicles or policies generally cannot simply be combined. Specific rules decide which policy a driver, passenger, or resident relative may look to. Because those rules set how many dollars are available, they often determine what a claim is really worth.
What if the at-fault driver fled or was never found?
That is what the uninsured side of the coverage is for. A hit-and-run driver is treated as uninsured, so you may claim against your own policy even though no other insurer exists. Prompt reporting to the police and your insurer helps preserve the claim, so act quickly if the driver cannot be identified.
How long do I have to bring a claim?
The underlying injury claim runs on the standard Massachusetts deadline of three years from the crash under G.L. c. 260, § 2A. Coverage claims can carry their own contractual notice requirements too, so report early and confirm every applicable deadline before time runs out.
Will using my own coverage raise my rates?
Making a claim for injuries caused by someone else’s fault is not the same as an at-fault accident, and you paid premiums precisely for this protection. Worry about rates should never stop an injured person from claiming coverage they are owed; the far greater risk is leaving real losses unpaid.
How much does it cost to hire a lawyer for this?
Nothing upfront. These claims are handled on a contingency fee, so you owe no attorney fee unless we recover for you, and the first consultation is free. That lets you learn what your policies actually provide, and what your claim may be worth, without any financial risk.
What kinds of losses can the coverage pay for?
The same categories as any injury claim: past and future medical care, lost wages and reduced earning capacity, and the pain and lasting disruption an injury causes. When a crash is fatal, it can extend to the family’s claim. Each category has to be documented and proven, not assumed.
What should I do before I talk to my insurer?
Get medical care, keep every record, and avoid giving a recorded statement or accepting any offer until you understand what your policies provide. A brief, free conversation with a lawyer first can prevent an early misstep, because what you say and sign at the outset can shape the whole claim.
Results Disclaimer: Past case results, settlements, and verdicts mentioned on this website do not guarantee or predict a similar outcome in any future case. Every case is unique and depends on its own facts and legal issues.