Report Finds Massachusetts Homeowners Would Face Dramatically Higher Tax Bills Without Landmark Law

A new study released today by the Fiscal Alliance Foundation finds that Massachusetts homeowners are paying thousands less in property taxes each year thanks to Proposition 2½, underscoring the law’s continued importance as a safeguard against unchecked tax increases.

The report, authored by national tax policy expert Jared Walczak, shows that since its passage in 1980, Proposition 2½ has significantly reduced property tax burdens across the Commonwealth. Today, the effective property tax rate on residential properties stands at approximately 1.04 percent, down sharply from 3.72 percent prior to the law’s enactment.

For the median Massachusetts homeowner, that translates into a property tax bill of roughly $6,896. Without Proposition 2½, that same bill would exceed $24,000.

“Proposition 2½ has delivered decades of meaningful tax relief for Massachusetts homeowners and remains the single most important protection against higher property taxes. Despite claims from political insiders, this law is not overly restrictive. In fact, it still allows property taxes to grow well above inflation in many cases,” said Paul Diego Craney, Executive Director of the Fiscal Alliance Foundation.

“Proposition 2½ changes the trajectory of property taxation by limiting the extent to which rising valuations automatically translate into higher tax bills. That distinction is critical. Without those constraints, homeowners would not just face higher taxes, but more volatile and less predictable ones, largely driven by rising home values rather than deliberate policy choices,” said study author Jared Walczak.

The study also challenges a common misconception about Proposition 2½, that it strictly limits property tax increases to 2.5 percent per year. In reality, due to new construction and other factors built into the law, property tax collections have grown by an average of 4.4 percent annually over the past two decades.

“This report makes it clear that critics are misrepresenting how the law works. Proposition 2½ is not some rigid cap. It already gives local governments significant flexibility. What it does do is play a critical role in preventing sudden and automatic tax hikes driven by fast rising property values,” noted Craney.

The study also places Massachusetts’ property tax system in a broader national context. Prior to the adoption of Proposition 2½, property tax burdens in Massachusetts were approximately 287 percent higher than the national average. Today, while still above average, that gap has narrowed significantly.

The report further finds that the average homeowner’s property tax bill would be approximately 19 percent higher if Proposition 2½ had been repealed a decade ago, and 22 percent higher if it had not been in place over the past twenty years. For a typical household, that difference translates into real financial impact, requiring the equivalent of five additional days of work each year just to cover higher property tax obligations.

Without Proposition 2 ½, Massachusetts homeowners would have paid an additional $1,176 in real terms per $100,000 in current home values over the last decade. That represents $7,780 in savings over a decade on the median single family home value of $661,590.

Additionally, the study lists all the cities and towns, including many large communities, that have never adopted a Proposition 2½ override, underscoring the law’s durability and continued voter support. In all, 97 municipalities, or over 25 percent, have never adopted a Proposition 2 ½ override in the 46 years that the law has existed.

At the same time, the report identifies stagnant state aid to municipalities, not Proposition 2½, as the primary driver of fiscal pressure on local governments. The report highlights that Massachusetts provides significantly less local aid to municipalities than the national average and per capita basis. If local aid levels matched national norms, cities and towns would receive an additional $1.82 billion dollars more in revenue, an amount roughly equivalent to a nine percent increase in property tax collections. If Massachusetts matched per capita national average, the Commonwealth’s municipal governments would have received an additional $3.14 billion in 2023 (the most recent year for which data is available), revenue equal to 15 percent higher property taxes.

“Beacon Hill has consistently underfunded local communities while simultaneously pushing to weaken taxpayer protections. Instead of raising property taxes on working families, lawmakers should focus on fixing the state’s broken funding priorities,” said Craney.

The report comes as some elected officials and advocacy groups push to weaken or repeal Proposition 2½, arguing that it limits local revenue growth. The study finds that such changes would result in substantially higher property tax burdens for homeowners across the Commonwealth.

“Proposition 2½ is the only thing standing between Massachusetts taxpayers and dramatically higher property taxes. Weakening it would be a direct hit on homeowners, renters, and seniors already struggling with the high cost of living,” noted Craney.

The study examines how Proposition 2 ½ works and explores the law’s effects statewide and in ten communities chosen to represent the Commonwealth’s geographic and economic diversity: Agawam, Barnstable, Beverly, Boston, Concord, Holden, Lenox, North Reading, Rochester, and Sturbridge. The full report, “Proposition 2½: Keeping Property Taxes Low Since 1980,” is available here.