Car insurance claims in Massachusetts

Fault rules, deadlines, insurer response times, minimum coverage and the regulator for car insurance claims in Massachusetts, with every rule cited to its source.

Verified as of September 10, 2026

Fault system No-fault
Shared-fault rule Modified comparative (51% bar) Contributory negligence «shall not bar recovery … if such negligence was not greater than the total amount of negligence attributable to the person or persons against whom recovery is sought», and damages are «diminished in proportion» to it; assumption of risk is abolished and the claimant «shall be presumed to have been in the exercise of due care» (M.G.L. c. 231, § 85).
Deadline to sue for vehicle damage 3 years from the accident [5] «actions of tort … shall be commenced only within three years next after the cause of action accrues» (M.G.L. c. 260, § 2A). Massachusetts does not split the vehicle clock from the injury clock: § 2A covers actions of tort as a class and nothing in it separates property damage out.
Deadline to sue for injury 3 years from the accident [5] Three years under M.G.L. c. 260, § 2A, and confirmed by § 4, which names «actions of tort for bodily injuries or for death the payment of judgments in which is required to be secured by chapter ninety» at the same three years — so the two sections agree and no tie-break is needed.
Deadline to sue your own insurer 6 years from the accident [5] General contract period: «Actions of contract, other than those to recover for personal injuries … shall … be commenced only within six years» (M.G.L. c. 260, § 2) — the route § 34M gives an unpaid personal injury protection claimant. A motor policy commonly carries a shorter suit clause of its own, and no Massachusetts provision governing such clauses was read for this page, so six years is not the practical deadline. Separately, the claimant must present the PIP claim to the insurer within two years of the accident (c. 90, § 34M).
Insurer response deadlines — Acknowledge the claim 2 days from the claim [6] Business days, and an assignment duty rather than an acknowledgement duty: «Assignment of an appraiser shall be made within two business days of the receipt of such claim», counted from an oral or written claim, and disapplied where the loss less any applicable deductible is under $1,500 (212 CMR 2.04(1)(a)). The appraisal itself must be transmitted within five business days of assignment.
Insurer response deadlines — Accept or deny 15 days from the claim [3] Working days, in the statute’s own words, and triggered by the claimant’s written demand rather than by the accident: «The insurer shall, within fifteen working days after receipt of such written demand respond in writing setting forth its decision as to whether it accepts the claim, accepts a part of the claim, rejects the claim, or … the amount at which it is willing to compromise the claim» (M.G.L. c. 90, § 34O). The same section protects the claimant against the insured’s late notice provided the claimant sends the insurer written notice of the accident within thirty days of it.
Insurer response deadlines — Pay 10 days from the claim [2] «upon notification of disability from a licensed physician, the insurer shall commence medical payments within ten days or give written notice of its intent not to make such payments, specifying reasons for said nonpayment»; benefits unpaid for more than thirty days make the unpaid party a party to a contract with the insurer, with a right to sue in contract and, on any recovery, costs and reasonable attorney’s fees (M.G.L. c. 90, § 34M). The statute says «days», not calendar or working days. On a first-party vehicle claim the count is seven days from receipt of the completed-work claim form (c. 90, § 34O).
Minimum liability coverage Bodily injury, per person $25,000 · Bodily injury, per accident $50,000 · Property damage $30,000 [1] Bodily injury «not less than $25,000 on account of injury to or death of any one person» and «not less than $50,000 on account of any one accident» (M.G.L. c. 90, § 34A), with property damage liability compulsory alongside it at «not less than $30,000 … in any one accident» (§ 34O). Both apply to policies issued or renewed on or after 1 July 2025 (St. 2024, c. 275, § 4), so a policy written in June 2025 and not yet renewed can still carry the earlier limits. The alternative instrument § 34A allows, a motor vehicle liability bond, was not raised: its definition still reads twenty thousand and forty thousand dollars. Every policy also carries personal injury protection of at least $8,000 per person (§ 34A).
Diminished value recoverable Not yet verified
Uninsured / underinsured motorist cover Mandatory
Regulator Massachusetts Division of Insurance
  1. M.G.L. c. 90, § 34A — Definitions (motor vehicle liability policy; personal injury protection; motor vehicle liability bond), § 34A, definitions of «Motor vehicle liability policy», «Personal injury protection» and «Motor vehicle liability bond» — verified as of 2026-09-11
  2. M.G.L. c. 90, § 34M — Personal injury protection benefits; tort exemption; claim presentation and payment, § 34M, first to fourth and last paragraphs, as amended by St. 2025, c. 78, §§ 2–3, effective 24 February 2026 — verified as of 2026-09-11
  3. M.G.L. c. 90, § 34O — Compulsory property damage liability; damage claim procedure, § 34O, first and second paragraphs and the written-demand, notice and payment paragraphs — verified as of 2026-09-11
  4. M.G.L. c. 231, §§ 6D and 85 — Tort threshold for pain and suffering; comparative negligence, § 6D; § 85, the latter at https://malegislature.gov/Laws/GeneralLaws/PartIII/TitleII/Chapter231/Section85 — verified as of 2026-09-11
  5. M.G.L. c. 260, §§ 2, 2A and 4 — Limitation of actions, § 2A; § 2; § 4, first paragraph — verified as of 2026-09-11
  6. 212 CMR 2.00 — The Appraisal and Repair of Damaged Motor Vehicles (Auto Damage Appraisers Licensing Board), 212 CMR 2.04(1) and 2.04(1)(a) — verified as of 2026-09-11
  7. 211 CMR 133.00 — Standards for the Repair of Damaged Motor Vehicles (Division of Insurance), 211 CMR 133.01 to 133.09 (section list read in full) — verified as of 2026-09-11
  8. M.G.L. c. 176D, § 3(9) — Unfair claim settlement practices, § 3(9)(b), (c), (e), (f), (n) — verified as of 2026-09-11
  9. M.G.L. c. 93A, § 9 — Consumer action; written demand for relief, § 9(1); § 9(3) — verified as of 2026-09-11
  10. M.G.L. c. 175, § 113L — Uninsured and underinsured motorist coverage, § 113L(1), (2), (5) — verified as of 2026-09-11
  11. St. 2024, c. 275 — An Act relative to motor vehicle insurance, §§ 1–4 — verified as of 2026-09-11
  12. M.G.L. c. 90, § 26 — Report of motor vehicle accidents, § 26 — verified as of 2026-09-11
  13. Massachusetts Division of Insurance — agency page, Agency landing page — verified as of 2026-09-11
  14. Division of Insurance — Filing An Insurance Complaint, How-to page — verified as of 2026-09-11

Massachusetts pays the first layer of every crash injury through personal injury protection, without asking who was at fault. Section 34A of chapter 90 defines the cover: at least $8,000 per person for reasonable medical, surgical, x-ray, dental, ambulance, hospital, nursing and funeral expenses incurred within two years of the accident, plus lost wages capped so that the payment and any employer continuation programme together reach seventy-five percent of the person’s average weekly wage. Section 34M makes the cover compulsory in every Massachusetts motor policy and says the benefits are «granted in lieu of damages otherwise recoverable by the injured person or persons in tort». The tort exemption it creates reaches exactly as far as PIP benefits are payable and no further, and § 34M states in terms that «No such exemption from tort liability shall apply in the case of an accident occurring outside the commonwealth» — so the same collision is handled one way inside the state and another way across the New Hampshire line. The section was amended with effect from 24 February 2026, and the amended text is the one described here.

The claim mechanics are written into the statute rather than left to the policy, and they cut both ways. The claimant must present the PIP claim as soon as practicable and in every case within two years of the accident, with a written description of the injuries, the treatment received and the treatment contemplated; refusing the insurer’s medical examination or its request for records is a defence the insurer may raise. Against that, once a licensed physician notifies disability the insurer has ten days to commence medical payments or to give written notice of why it will not, specifying its reasons. Benefits unpaid for more than thirty days make the unpaid party a party to a contract with the insurer, with a right to sue in contract and, on any recovery, costs and reasonable attorney’s fees assessed against the insurer (all c. 90, § 34M). The statute counts in plain days here, not business days.

Suing the other driver for pain and suffering means clearing § 6D of chapter 231: qualifying medical expense in excess of two thousand dollars, or one of five named categories — death, loss of a body member, permanent and serious disfigurement, the losses of sight or hearing listed in c. 152, § 36, or a fracture. One trap for anyone reading the statutes side by side: § 34M still carries a stale cross-reference to a five-hundred-dollar threshold, and § 6D is the section that actually states the threshold, so two thousand dollars is the figure. Shared fault then follows § 85 of the same chapter, which preserves recovery while the claimant’s negligence is not greater than the defendants’ combined negligence and reduces damages in proportion, so the bar falls above fifty percent. The court deadline is three years from accrual for an action of tort, and Massachusetts does not split the vehicle clock from the injury clock (c. 260, §§ 2A and 4). An action on the policy as a contract runs six years (§ 2), though the policy’s own suit clause will usually be shorter.

Three practical things. First, the limits moved: St. 2024, c. 275 raised bodily injury liability to not less than $25,000 per person and $50,000 per accident and property damage liability from $5,000 to $30,000, for policies issued or renewed on or after 1 July 2025. Second, the clocks on a damaged car are short and counted in business days — an appraiser assigned within two business days of an oral or written claim unless the loss net of deductible is under $1,500, the appraisal transmitted within five, a supplement inspected within three and answered within two (212 CMR 2.04) — while on a third-party property damage demand the insurer owes a written decision within fifteen working days and, once a completed-work claim form arrives, payment within seven days, with double damages plus costs and fees where a court finds the refusal unreasonable (c. 90, § 34O). The companion regulation, 211 CMR 133.00, sets repair and valuation standards and fixes no day count at all, so cite 212 CMR for any deadline. Third, chapter 176D, § 3(9) lists the unfair claim settlement practices but names no number of days anywhere in the list; it is enforced privately through chapter 93A, and § 9(3) requires a written demand for relief mailed or delivered at least thirty days before filing. That letter is the step most often skipped, and skipping it forfeits the two-to-three-times multiplier a willful violation or a bad-faith refusal would otherwise carry. Uninsured motorist cover is compulsory, with no rejection route, and reaches hit-and-run drivers and an insolvent liability insurer; underinsured cover is an election the insurer must offer and the policyholder may decline (c. 175, § 113L). The compulsory uninsured-motorist floor is set there by a cross-reference to the limits prescribed for a liability policy «under this chapter» — chapter 175, while the $25,000 and $50,000 figures sit in chapter 90 — and the limit that cross-reference sets could not be resolved against a primary text and is not stated here. Finally, any crash killing or injuring anyone, or causing more than $1,000 of damage to any one vehicle or other property, must be reported in writing to the Registrar within five days, with a copy to the police department for the road where it happened (c. 90, § 26); licence suspension is the sanction.

File a complaint: Massachusetts Division of Insurance →

Frequently asked questions

How long do I have to sue for injuries after a car accident in Massachusetts?

3 years from the accident (M.G.L. c. 260, §§ 2, 2A and 4 — Limitation of actions — Three years under M.G.L. c. 260, § 2A, and confirmed by § 4, which names «actions of tort for bodily injuries or for death the payment of judgments in which is required to be secured by chapter ninety» at the same three years — so the two sections agree and no tie-break is needed.).

Is Massachusetts an at-fault or no-fault jurisdiction?

No-fault. Shared-fault rule: Modified comparative (51% bar).

Who do I complain to about an insurer in Massachusetts?

Massachusetts Division of Insurance (https://www.mass.gov/how-to/filing-an-insurance-complaint).