Maine Revenue Services Adopts Rule on Apportionment for Corporations, Pass-Through Entities

Maine Revenue Services adopted a new rule regarding the apportionment for corporations, pass-through entities and other business entities. This regulation clarifies that it only applies to a corporation that has an income tax nexus with Maine during the taxable year, as defined by the relevant statutes. Additionally, this rule does not apply to financial institutions that are subject to the franchise tax. The regulation took effect on June 25. [Me. Revenue Servs., Regs. Section 18-125-801, 10/08/25]