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Added by St. 2026, c. 101, § 13, applicable for taxable years beginning on or after January 1, 2026.
(a)
For the purposes of this section, the definition of “Code” in section 1 shall not apply.
(b)
Except as provided in subsection (c), any individual amendment to the Internal Revenue Code that would otherwise apply pursuant to chapters 62 or 63, that would affect the determination of Massachusetts gross income, Massachusetts deductions pursuant to said chapter 62, gross income pursuant to paragraph 3 of section 30 of said chapter 63 or net income pursuant to paragraph 4 of said section 30 of said chapter 63 shall not apply to:
- (i) any taxable year that begins in the calendar year in which the amendment is enacted; or
- (ii) any taxable year that precedes the calendar year in which the amendment is enacted.
(c)
Subsection (b) shall not apply to any individual amendment to the Internal Revenue Code if the commissioner determines within 90 days after such amendment is enacted that the impact to tax revenue collected pursuant to chapters 62 or 63 is estimated to be less than $20,000,000 in lost or gained revenue based on a rolling 3 year average adjusted for inflation as provided by subsection (f) of section 1 of the Internal Revenue Code, as amended and in effect for the taxable year, for:
- (i) the fiscal year that begins in the calendar year in which the amendment is enacted; or
- (ii) any fiscal year that precedes the calendar year in which the amendment is enacted.
(d)
Not later than 60 days after any individual amendment to the Internal Revenue Code, the commissioner shall submit to the house and senate committees on ways and means and post on its website the estimated impact to tax revenue collected pursuant to chapters 62 and 63 of such individual amendment.
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| Last updated: | June 12, 2026 |
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