Massachusetts Property Tax Guide 2025

Massachusetts has a moderately high average effective rate of 1.12%, with the average homeowner paying about $6,400/year. The state's famous Proposition 2½ limits how much taxes can increase annually, but rates still vary widely by community.

How MA Property Taxes Work

Massachusetts property taxes are set at the municipal level — each of the state's 351 cities and towns sets its own tax rate. Properties are assessed at full and fair cash value (100% of market value) as of January 1 each year.

Municipalities can choose a single tax rate or a split rate (different rates for residential vs. commercial/industrial). About 100 communities use the split rate, typically taxing commercial properties at 1.5-2x the residential rate.

Proposition 2½

Passed in 1980, Prop 2½ is the backbone of Massachusetts property tax law:

• Levy ceiling: Total taxes collected cannot exceed 2.5% of total assessed value in any community.
• Levy limit: Annual tax increases are limited to 2.5% plus new growth (new construction, renovations).
• Override votes: Communities can exceed the levy limit through a ballot vote (temporary "override" or permanent "debt exclusion").

This means your individual tax bill can increase by more than 2.5% if your property's value rose faster than the community average — the 2.5% cap applies to total municipal revenue, not individual bills.

Average Tax Rates by Major Community

Boston Residential Exemption

Boston offers a unique residential exemption that reduces the taxable value of owner-occupied homes by a fixed amount (currently about $313,089 off assessed value). This means owner-occupants in Boston pay significantly less than investors or absentee owners.

You must live in the property as of January 1 and file with the Assessing Department. A few other communities (Barnstable, Cambridge, Chelsea, Everett, Malden, Somerset, Waltham, Watertown) also offer residential exemptions.

Key Exemptions

• Clause 41C (Senior): For 65+ with 10+ years residency and income/asset limits. Exemption of $1,000 (or more with local adoption). Applied against your tax bill.
• Clause 17D (Surviving Spouse/Minor): $175-$350 exemption for surviving spouses, minors, and elderly persons of limited means.
• Clause 22 (Veterans): $400-$1,500 exemption for veterans with qualifying service. Higher amounts for disabled veterans (up to full exemption for 100% disability).
• Clause 37A (Blind): $500-$875 exemption for legally blind persons.
• Senior Work-Off Program: Many towns let seniors 60+ work for the municipality (typically 125 hours/year) in exchange for $1,500 off their tax bill.
• CPA Surcharge Exemption: Low-income homeowners can be exempt from the Community Preservation Act surcharge (1-3% of taxes).

How to File an Abatement

In Massachusetts, challenging your assessment is called filing for an abatement:

1. Check your assessment — Review the property record card at your assessor's office or on TaxLookup.ai. Verify square footage, lot size, condition, and comparable assessments.
2. File Form 128 — Submit to your local Board of Assessors by February 1 (for the fiscal year that began July 1). This is a strict deadline.
3. Wait for decision — The assessors have 3 months to respond. They may inspect your property.
4. Appeal to ATB — If denied (or no response in 3 months), appeal to the Appellate Tax Board within 3 months of denial. Filing fee is $65 for residential.

Payment Schedule

• July 1: Fiscal year begins
• Q1 (August 1): First preliminary bill due
• Q2 (November 1): Second preliminary bill due
• Q3 (February 1): First actual bill due (based on new assessment + rate)
• Q4 (May 1): Final bill due

Most communities bill quarterly (4 payments/year). Some smaller towns bill semi-annually.

Tax Deferral for Seniors

Massachusetts offers a generous Clause 41A tax deferral program for homeowners 65+: you can defer all or part of your property tax bill if it exceeds 10% of your income. The deferred amount accrues 8% interest and becomes a lien on the property, payable when you sell or from your estate.