The Abatement Process and the Appellate Tax Board

Massachusetts appeals property tax by abatement application — a petition to your own board of assessors — and the structure is built around three three-month counts and one deadline that runs on the tax bill itself. The Citizen Information Service’s abatement guide, read in full, is the source for all of it; the structure below follows its statements.

The deadline: the first actual bill

The abatement application (State Tax Form 128) must be filed with the board of assessors by the due date of the first ACTUAL tax bill for the fiscal year. With quarterly billing — the norm — that is the third quarterly bill, usually February 1: the first two quarterly bills are estimates from the prior year, and the third is the first one carrying the year’s real figures.

Two warnings the guide states directly:

• File even if you are talking. An informal discussion with the assessors does not extend the deadline — the application must be filed anyway.
• Pay on time. Failing to pay the tax when due can forfeit the appeal rights — an abatement application is not a payment shield.

Three months to decide — then the law decides

The assessors have three months to act (they may extend the period in writing). If they neither grant nor deny within three months — or the extended period — the application is DEEMED DENIED. Nothing else happens on the municipal side; the next step is yours.

What this tells you: the deemed denial is Massachusetts’s answer to the silent municipality. You never wait on an administrative body that has stopped responding — the calendar converts its silence into the decision you need to appeal.

The Appellate Tax Board — and the payment precondition

An appeal from the assessors’ decision — or from a deemed denial — goes to the Appellate Tax Board (ATB) within three months. One condition is value-dependent: for appeals over $5,000, the tax (or the portion not being appealed) must have been paid and be in the collector’s hands by the bill’s due date. A lower assessed value on its own does not satisfy the rule — the money has to have arrived.

What this tells you: the $5,000 payment rule makes paying the bill under protest part of the appeal itself in Massachusetts. An owner planning an ATB appeal on a large abatement claim pays first and argues second — the reverse of states where filing the appeal suspends collection.

Worked example (illustrative)

Illustrative timeline with made-up figures — your municipality’s billing dates control.

1. January 31, 2027: the third quarterly bill (the first actual bill of FY2027) is due February 1 — your Form 128 goes in January 31, with the payment.
2. March 2027: the assessors hold an informal hearing — no decision issues.
3. May 1, 2027 (three months): no decision and no extension — the application is deemed denied.
4. By August 1, 2027 (three months from the denial): ATB appeal filed — with the paid tax in the collector’s hands, which it was from February.

What this page does not cover

The ATB’s hearing procedures, abatements of personal property, and the residential exemption are outside this page. The Citizen Information Service’s guide cited below is the authority for the deadlines and both three-month rules.