State guide
Massachusetts property taxes (2026)
✓ Verified August 2026 against official county pages — 3 sources linked below.
County pages for Massachusetts are on the way — the statewide dates below apply everywhere, and county pages will add local rates, contacts, and exact appeal windows.
How Massachusetts property taxes work
Massachusetts towns and cities run their own property tax on a July–June fiscal year, with quarterly bills in most communities: issued July 1, October 1, January 1, and April 1, each due 30 days later — August 1, November 1, February 1, and May 1.
The first two quarters are preliminary — estimates based on last year's bill. The real news arrives with the January 1 'actual' bill: it carries your new assessed value and the new tax rate. That's the bill to read carefully, because it starts your abatement clock.
Challenging your assessment here is called seeking an abatement, and the deadline is unforgiving: the application must reach your Board of Assessors within 30 days of the actual bill's issue — in most quarterly communities, by early February. Late bills accrue 14% interest, and on larger bills you must stay current to preserve your appeal rights.
Proposition 2½ shapes everything: a community's total levy can't grow more than 2.5% a year (plus new growth) without an override vote, which keeps rate swings tame — assessments, not rates, drive most bill changes.
When payments are due
Quarterly in most communities: August 1, November 1, February 1, and May 1 (bills issue 30 days ahead). Late payments accrue 14% interest.
| Payment | Due | Delinquent after | Notes |
|---|---|---|---|
| Q1 (preliminary, FY2027) | August 1, 2026 | — | Issued July 1; based on last year's bill |
| Q2 (preliminary) | November 2, 2026 | — | Issued October 1 |
| Q3 (actual) | February 1, 2027 | — | Issued January 1 with the new assessment — the abatement clock starts here |
| Q4 (actual) | May 3, 2027 | — | Issued April 1 |
Exact dates can vary by county — use your county's page above for the dates on your bill.
How to abatement your assessment
The statewide rule: File an abatement application with your Board of Assessors within 30 days of the actual tax bill's issue — in most quarterly communities that means early February
The deadline is receipt, not postmark, and it's jurisdictional — assessors cannot grant late applications. On bills over $3,000, keep payments current or you lose the right to appeal the assessors' decision.
- Read your actual bill (issued January 1)It shows the new assessed value and rate. Compare the value against what your home would have sold for on the prior January 1.
- Pull comparable salesAssessor databases are public — find similar homes assessed or sold lower to make the overvaluation case.
- File the abatement application within 30 daysState Tax Form 128, filed with (and received by) your Board of Assessors — typically by early February. Filing is free.
- Get the assessors' decisionThey have three months to act; no answer counts as a denial.
- Escalate to the Appellate Tax BoardWithin three months of the decision — the ATB's small-cases procedure is homeowner-friendly.
County pages have the exact local deadlines, forms, and filing links.
Statewide exemptions
| Exemption | What it's worth | Deadline |
|---|---|---|
| Senior exemptions (Clause 41C and kin) | Statutory exemptions for homeowners 65+/70+ under local income and asset limits — amounts and clauses vary by community adoption | Apply with your assessors (commonly by April 1 or 3 months after the actual bill) |
| Residential exemption (local option) | Boston, Cambridge, Somerville and some other communities exempt a slice of owner-occupied value — a big saver where adopted | Application deadlines set locally |
| Veterans exemptions (Clause 22 series) | From $400 up to full exemptions depending on disability level and circumstances | Apply with your assessors |
| Senior Circuit Breaker (state income tax credit) | A refundable state income-tax credit for homeowners/renters 65+ whose housing costs outrun the income thresholds | Claimed on the state income tax return |
Reassessment
Assessors update values annually to full and fair cash value as of January 1, with DOR certification reviews on a multi-year cycle. The new value appears on the January actual bill.
Value notices (Actual tax bill (third quarter)) usually mail in January.
Common questions
- When are property taxes due in Massachusetts?
- Quarterly in most communities — August 1, November 1, February 1, and May 1, with bills issued a month ahead. The first two are preliminary estimates; the January and April bills are the 'actual' ones with your new assessment. Late payments accrue 14% interest.
- How do I challenge my Massachusetts assessment?
- File an abatement application (Form 128) with your Board of Assessors within 30 days of the actual bill's issue — early February in most quarterly towns. The deadline is receipt, not postmark, and can't be waived; denials go to the Appellate Tax Board.
- What is Proposition 2½?
- The 1980 levy cap: a community's total property tax levy can grow at most 2.5% a year plus new growth, unless voters approve an override. It's why Massachusetts bill changes track assessments more than rates.
- What is the residential exemption?
- A local-option discount for owner-occupants — Boston, Cambridge, Somerville and others exempt a slice of your home's value, shifting the burden toward non-resident owners. If you live in your home in one of those cities, make sure it's on your bill.
- Is there help for seniors with Massachusetts property taxes?
- Three layers: local senior exemptions (Clause 41C and related, income/asset tested), tax deferral programs, and the state's refundable Senior Circuit Breaker credit claimed on your income tax return.
Sources
Every fact on this page comes from an official page. Check them yourself:
- City of Worcester — Real Estate Tax — checked 2026-08-12
- Mass.gov — Proposition 2½ and Tax Rate Process — checked 2026-08-12
- Secretary of the Commonwealth — property tax abatement — checked 2026-08-12