Massachusetts Property Tax Appeal Guide
How to challenge your property tax assessment in Massachusetts - deadlines, process, and a savings calculator.
What This Data Tells Us About Appeals in Massachusetts
- Expect $0 for abatement; $10–$100 for ATB when petitioning the Appellate Tax Board (ATB) - later tribunal or court stages may use a different schedule.
- This ACS extract does not store how often Massachusetts assessments are reduced on appeal; comparable sales and property-record errors are the evidence the named board typically asks for.
- The typical window centers on February; confirm the current county notice date before relying on the statewide summary. Deadline shape differs on Connecticut and Maine.
Primary signal
The filing route can carry a fee
File with the Appellate Tax Board (ATB). The reported filing-fee structure is $0 for abatement; $10–$100 for ATB; later court or tribunal stages may use a different schedule.
Decision signal 2
Massachusetts's process has its own procedural details
Massachusetts requires you to pay your tax bill before appealing, failure to pay can bar your appeal. The ATB is the primary appeal body for most cases.
Decision signal 3
The filing window centers on February
February 1 (Fiscal Year first quarter tax bill deadline). Deadlines can vary by county and assessment cycle, so confirm the current date with the local assessor before relying on this guide.
Decision signal 4
This extract does not store an appeal-win rate
The ACS county medians on this site do not include how often Massachusetts assessments are reduced on appeal. Recent comparable sales and documented property-record errors are the evidence boards typically ask for.
How to read this guide and disclaimer
Use the ranked signals above as a preparation order, not as a forecast. Start with the filing window and named appeal body because a strong valuation argument cannot cure a missed deadline or a filing sent to the wrong office. Then compare the assessment with recent, genuinely similar properties and document factual errors such as incorrect square footage, condition, or classification.
An estimated success rate is not part of this ACS extract. Keep copies of the assessment notice, evidence, forms, delivery confirmation, and every response from the taxing authority. If a state rule and a county instruction differ, follow the current instruction issued by the office that will hear the appeal.
This guide is for informational purposes only and is not legal or tax advice. Deadlines, filing fees, and procedures vary by county within Massachusetts and can change year to year. Always verify the current rules with your local assessor's office, or a licensed attorney or tax professional, before filing. Source: Massachusetts Department of Revenue.
Appeal calendars beside Massachusetts
Other state boards, not geography. Use them to see whether Massachusetts's February window is unusual; start with Connecticut and Maine.
| Peer state | Typical month | Filing fee |
|---|---|---|
| Connecticut Also open Connecticut appeal steps | February | $0 |
| Maine Also open Maine appeal steps | February | $0 |
| Maryland Also open Maryland appeal steps | February | $0 |
| West Virginia Also open West Virginia appeal steps | February | $0 |
| Delaware Also open Delaware appeal steps | March | $0 |
Appeal Deadline
February 1 (Fiscal Year first quarter tax bill deadline)
Appeal Body: Appellate Tax Board (ATB)
Step-by-Step Appeal Process
- 1
Pay your first quarter tax bill by November 1 (required to preserve appeal rights)
- 2
File an abatement application with the local assessor by February 1
- 3
The assessor has 3 months to act; if denied or no action, appeal to the Appellate Tax Board
- 4
File your ATB petition within 3 months of the assessor's decision
- 5
ATB holds a hearing; further appeals go to the Appeals Court
Massachusetts-Specific Notes
Massachusetts requires you to pay your tax bill before appealing, failure to pay can bar your appeal. The ATB is the primary appeal body for most cases.
Source: Massachusetts Department of Revenue
Estimate appeal savings
After you have Massachusetts's deadline (February) and filing route (Appellate Tax Board (ATB)), project annual savings if an assessment cut sticks. The shared estimator lives on one tools URL so each state page keeps its own process facts instead of reprinting the same form.
Open appeal savings estimator →