Massachusetts gives you three years to sue over a car accident, and that number does a lot of the work in this article. But the exceptions are where people actually get hurt: a crash involving a town truck or MBTA bus cuts that window down to a fraction of three years, a fatal crash starts a second clock most families never hear about until it's too late, and your own insurer's policy language can set a deadline shorter than anything the courts enforce. Here's how the actual Massachusetts rules work, section by section.
The three-year rule for injury and property damage
Under Massachusetts General Laws chapter 260, section 2A, a person injured in a car accident has three years from the date of the crash to file a personal injury lawsuit in state court.1 The same statute covers property damage claims, so if you're suing over a totaled car or unpaid repair bills rather than an injury, you get the identical three-year window rather than a separate schedule.1 Miss it, and the at-fault driver's attorney can ask a judge to dismiss the case outright, regardless of how strong the underlying claim is.
This is a filing deadline for a lawsuit, not a deadline to accept an insurance settlement. Plenty of Massachusetts claims resolve with the at-fault driver's insurer well inside three years without ever going to court. But if a fair settlement doesn't come together, that three-year clock is what protects your right to sue instead of negotiate.
When the clock actually starts
Most crash cases start the clock on the date of impact, since the injury and its cause are obvious immediately. Massachusetts courts apply a "discovery rule" for cases where that isn't true: the claim accrues when the injured person discovered, or reasonably should have discovered, that she had been harmed and that the harm was caused by someone else's conduct, under the Supreme Judicial Court's 1990 ruling in Bowen v. Eli Lilly & Co.2 For an ordinary rear-end collision this rarely matters. It becomes relevant when an injury doesn't surface right away, such as a soft-tissue or head injury not diagnosed until months after a crash that initially looked minor.
Exceptions that pause the clock
Two tolling provisions can push the three-year deadline further out than the calendar would otherwise show.
If the injured person was a minor, or was incapacitated by mental illness, when the crash happened, the three-year period doesn't start running until that disability ends, under chapter 260, section 7.3 A 15-year-old passenger hurt in a crash, for example, generally has until three years after turning 18 to sue, not three years from the collision itself.
Separately, chapter 260, section 9 excludes any time the at-fault driver spends living outside Massachusetts from the three-year count.4 If a driver who caused a crash moves out of state right after, that time away doesn't count against the injured person's filing deadline. The statute doesn't let a claim be revived, though, if it was already barred under the law of wherever the driver was living.
A second, separate clock when a crash is fatal
When a car accident causes a death, Massachusetts starts a second clock, separate from the personal injury deadline, under the wrongful death statute. Chapter 229, section 2 gives the executor or administrator of the estate three years from the date of death, or three years from when they knew or should have known the facts supporting the claim, to file suit.5 That distinction matters when the victim survives the crash itself but dies from the injuries weeks or months later: the wrongful death clock runs from the date of death, not the date of the collision, so it can extend well past what families assume from the ordinary personal injury rule. The statute also allows punitive damages of at least $5,000 when the death resulted from gross negligence or willful, wanton, or reckless conduct, on top of compensatory damages.5
Government vehicles and roads cut the deadline sharply
The three-year rule assumes you're suing another private driver. If a Massachusetts city, town, or other public employer caused or contributed to the crash, say a town snowplow or an MBTA bus, the Massachusetts Tort Claims Act imposes a far shorter deadline. The same short deadline applies to crashes tied to a defect on a state or municipal road.
Chapter 258, section 4 requires the claimant to present the claim in writing to the public employer's executive officer within two years of the accident, sent by certified or registered mail, before any lawsuit can be filed at all.6 The public employer then has six months to deny the claim in writing; if it doesn't respond in that window, the claim is treated as denied. A lawsuit still has to be filed within three years of the accident overall, but skip the two-year written presentment step and the claim is barred no matter how much time is left on that outer clock.6 This presentment requirement is the single most common way legitimate Massachusetts crash claims get thrown out, because injured people treat the three-year number as the only deadline that matters and never send the required notice.
Insurance deadlines that arrive before the lawsuit deadline
Two Massachusetts insurance rules create their own timing, separate from the court filing deadline.
Personal injury protection, Massachusetts' no-fault coverage, pays up to $8,000 in medical bills regardless of fault under chapter 90, section 34M, and the insurer must start paying within ten days of notice from a treating physician or send written notice explaining why it won't.7 To step outside PIP and sue the at-fault driver for pain and suffering, your reasonable medical expenses generally need to exceed $2,000, unless the crash caused death, a bone fracture, permanent and serious disfigurement, loss of a body part, or loss of sight or hearing, under chapter 231, section 6D.8 None of this changes the three-year filing deadline, but it affects what kind of claim you can bring within it.
Uninsured and underinsured motorist claims work differently. Because a UM or UIM claim runs against your own insurer rather than the at-fault driver, Massachusetts treats it as a contract claim, subject to the six-year limitations period for contract actions under chapter 260, section 2, rather than the three-year tort deadline.9 Don't rely on that longer number by default, though: the Massachusetts standard auto policy sets its own arbitration-demand deadline for UM and UIM disputes, and insurers enforce that policy language strictly. Check your declarations page or call your insurer early rather than assuming you have six years to act.
Get the crash report early
A certified copy of the police report documents the date of the crash that starts these clocks, along with the responding officer's account of fault. Requests go through the RMV's Crash Records Unit.10 For step-by-step instructions on requesting one, see thatcarhitme.com's Massachusetts crash report guide.
If the accident also damaged your vehicle's resale value beyond what the repair bill shows, that's a separate claim with its own evidence requirements. See thatcarhitme.com's Massachusetts diminished value guide for how that works.
What missing the deadline actually costs you
Once the applicable deadline passes, whether it's the three-year personal injury clock, the two-year government presentment window, or the three-year wrongful death period, the defendant can move to dismiss the case with no hearing on the facts. Insurance adjusters know this too, and claims often slow down as a filing deadline gets close, since a barred claim has no settlement leverage left. If your crash involved a government vehicle, a fatality, a minor, or an out-of-state driver, the deadline that applies to you probably isn't the plain three-year number. It's worth getting a Massachusetts attorney to confirm which clock you're actually on well before it runs out. You can find one through thatcarhitme.com's legal directory.
This is general information, not legal advice.
Sources
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Mass. Gen. Laws ch. 260, § 2A, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleV/Chapter260/Section2A
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Bowen v. Eli Lilly & Co., 408 Mass. 204 (1990), Massachusetts Supreme Judicial Court, via Social Law Library, http://masscases.com/cases/sjc/408/408mass204.html
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Mass. Gen. Laws ch. 260, § 7, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleV/Chapter260/Section7
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Mass. Gen. Laws ch. 260, § 9, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleV/Chapter260/Section9
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Mass. Gen. Laws ch. 229, § 2, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleII/Chapter229/Section2
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Mass. Gen. Laws ch. 258, § 4, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleIV/Chapter258/Section4
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Mass. Gen. Laws ch. 90, § 34M, https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXIV/Chapter90/Section34M
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Mass. Gen. Laws ch. 231, § 6D, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleII/Chapter231/Section6D
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Mass. Gen. Laws ch. 260, § 2, https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleV/Chapter260/Section2
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Massachusetts RMV, Request a Copy of a Police Crash Report, https://www.mass.gov/how-to/request-a-copy-of-a-police-crash-report