On October 4, 2023, Massachusetts Governor Maura Healey signed House Bill 4104 into law implementing major changes in corporate taxation. The most significant modification is the adoption of the single-sales-factor (SSF) apportionment system for all corporate taxpayers. This deviation from the prior system of multi-factor apportionment, where a company’s tax rate was based on a combination of property, payroll, and sales, leans to focus solely on the sales factor for taxation.
This move by Massachusetts follows the trend of over 30 other states that have already adopted either mandatory or elective SSF. The transition establishes Massachusetts firmly within the mainstream trend of states shifting towards a sales-based apportionment system to improve economic competitiveness.
House Bill 4104 also holds importance by extending its applicability beyond the traditional beneficiaries of the SSF system – manufacturers and mutual fund service corporations. Under the new law, every corporate taxpayer in Massachusetts will now be subject to the SSF provision, which will apply to tax years beginning on or after January 1, 2025.
This landmark tax reform can potentially bring seismic changes in the legal obligations of corporations and law firms involved in tax management and planning. To navigate through this intricate new landscape, legal professionals should acquaint themselves thoroughly with the provisions and implications of the SSF apportionment model.
For more details on this development, you can check the detailed narration on it by McDermott Will & Emery available here.