| Effective Date | Release Date |
|---|---|
| January 1, 2026 | May 13, 2026 |
The Corporations Book, a list of corporations subject to taxation in Massachusetts, is published annually by the Division of Local Services. This data can be accessed using DLS's Corporation Book Online Search page.
The Corporation Book Online Search lets you search for Massachusetts corporations, financial institutions or insurance companies using keywords.The search results can be viewed and exported in Microsoft Excel format.
Notice to Assessors from Senior Deputy Commissioner Sean Cronin
Corporation Book Online Search
Secretary of State's Corporations Database
Contact
Online
Phone
Business Income Tax
Call The Corporations Book Contact, Business Income Tax at 617-887-6367
| Last updated: | May 15, 2026 |
|---|