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Property Tax Calculator
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Mayor Wu filed legislation to lessen the impact of an increase in residential property taxes, but the measure wasn’t approved by the State Senate. Use our calculator to better understand how the legislation would have impacted you.

Assessing Calendar

Keep up with important assessing dates and deadlines.

What to know about the fiscal year

In Massachusetts, the Fiscal Year commences on July 1 and ends the following June 30. State law requires that all property be assessed at its full market value as of January 1 before the start of the fiscal year.

The ownership, value, and condition of property on January 1 determines an assessment and to whom the tax bill is assessed. New structures, additions, demolitions, improvements, or alterations that occur after January 1 will not be reflected in the assessing record until the following January 1. The only exception is certain exempt property which has a date of determination of July 1.

Assessing Calendar

Date    Actions
July 1
  • Beginning of fiscal year
  • First Quarter preliminary tax bill issued, this is the first of two equal estimate amounts based on the previous fiscal year taxes
August 1

or first business day following due date.
  • First Quarter preliminary tax due
  • Personal exemption renewal applications mailed
September
  • Residential exemption applications mailed to new owners who purchased property in the previous calendar year
October 1
  • Second Quarter preliminary tax bill issued , the second of two equal and preliminary tax bills based on the previous fiscal year
November 1

or first business day following due date
  • Second Quarter tax due
Late December
  • Third Quarter actual tax bill issued reflecting the actual value and tax rate for the fiscal year 
January 1
  • Property Tax Assessment Date for the following fiscal year
  • Abatement application filing period begins 
February 1

or first business day following due date 
  • Third Quarter tax due
  • Abatement filing period deadline
February - May
  • Review of abatement and exemption applications - Notice of decision mailed
March 1
  • Owners of taxable personal property must file Form of List
  • Final date for charitable organizations to file Form 3ABC
April 1 (or 3 months after third quarter or actual tax bills are mailed, if later)

or first business day following due date
  • Residential Exemption, personal exemption (elderly, blind, surviving spouses, minor children of deceased parents, veterans, National Guard) and tax deferral filing deadline
  • Fourth Quarter tax bill issued 
May 1

or first business day following due date.
  • Fourth Quarter tax due
June 30
  • Fiscal year ends

 

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