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Bill

H 4975

An Act to manage federal tax changes in Massachusetts

194th Legislature (2025-2026)

Massachusetts bill authorizing state tax adjustments responding to federal tax law changes to manage state revenue impacts.

Hearing rescheduled to 02/12/2026 from 10:00 AM-12:00 PM in A-1 and Virtual Hearing updated to New End Time
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Bill Summary · H 4975

Legislative bill overview

H 4975 is a Massachusetts state bill designed to address the fiscal impact of changes to federal tax policy on the state's tax revenue and budget. The bill appears to authorize state-level tax adjustments or spending modifications in response to federal tax law changes. Specific legislative language would clarify whether this involves rate adjustments, deduction modifications, or budgetary reallocation.

Why is this important

Federal tax changes directly affect state tax bases—when federal taxable income definitions change, Massachusetts residents' state tax liabilities shift accordingly, impacting state revenue forecasts. Without corrective state legislation, unexpected federal policy changes can create budget shortfalls or surpluses that disrupt state planning and service delivery. This bill creates a mechanism for Massachusetts to maintain revenue stability or intentionally adjust state tax policy in tandem with federal changes.

Potential points of contention

  • Revenue impact uncertainty: Without knowing the specific federal changes being addressed, lawmakers cannot predict whether this bill increases or decreases state revenue, making fiscal analysis difficult
  • Tax complexity: Decoupling state tax rules from federal rules can create compliance confusion for taxpayers managing dual tax obligations
  • Retroactivity concerns: Federal tax changes often have retroactive application; the bill's effective date and retroactive provisions could affect past tax years or create administrative burdens

Compiled from official sources — confirm details with the bill’s official record.

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