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Massachusetts’ Largest Accounting Firms
The largest accounting firms in Massachusetts employ more than 10,000 professional staff in the Bay State. The online version of this ranking expands beyond what appears in print; another 34 accounting firms are included in our digital rankings, in addition to the 50 featured in this week’s print edition. This week’s List marks a shift in our research methodology and philosophy in 2025, one that will emphasize more data and context for readers while better coordinating the resources available to us and our 46 sister publications under the American City Business Journals flag. We anticipate this effort will identify thousands of new local records — and cumulatively, tens of thousands of new businesses across ACBJ’s footprint — this year alone. Information on The List was obtained through Boston Business Journal research or supplied by individual firms through questionnaires that BBJ could not independently verify. In case of ties, firms are ranked by total Mass. staff, total employment and then listed alphabetically if ties remain. Additionally, accounting firms that did not respond to employment surveys but were still included on this year’s List are sorted by annual filings with the U.S. Department of Labor. For information about this and other Boston Business Journal Lists, please contact Associate Editor/Research Sean McFadden at smcfadden@bizjournals.com.