Evidence map
How to read Massachusetts's insurance data
The order below follows the evidence with the greatest bearing on this state record, while keeping the CMS claims filing, NAIC cost series, and state-rule context distinct.
Auto-cost position
Massachusetts's place in the NAIC series
Massachusetts's 2023 average auto expenditure was $1326, 17th of 51 jurisdictions by cost and 11.4% above the national average. The figure reflects the coverage mix recorded by NAIC, not an individual driver's quote.
State insurance rules
Massachusetts's regulatory context
Massachusetts is one of 12 no-fault auto-insurance states: drivers file injury claims with their own insurer's Personal Injury Protection coverage regardless of who caused the accident, rather than suing the at-fault driver. Massachusetts's insurance commissioner is an appointed office (in most states, by the governor), not an elected position -- one of 39 states structured this way.
Nearest expenditure peers. By average auto expenditure, Massachusetts's closest peers in PlainInsurer's dataset are Arizona ($1344/yr) and South Carolina ($1367/yr) -- both within a few dollars of Massachusetts's own $1326/yr.
Border comparison. Massachusetts borders Connecticut, New Hampshire, New York, Rhode Island, and Vermont. Massachusetts's auto costs run higher than 3 of them and lower than 2, by average auto expenditure -- geography is one of several factors (alongside regulation and risk pool) that shapes these differences, not a direct cause.
Massachusetts operates a state-based health-insurance marketplace, so its issuers are not in the federal CMS Transparency-in-Coverage file. For health-plan denial data, consult the Massachusetts Department of Insurance and the state exchange directly.