Caroline A. Kupiec
Recognized in The Best Lawyers in America® since 2026
Recognized in Best Lawyers: Ones to Watch® in America from 2025-2025
Boston, Massachusetts
Tax Law
Caroline has an extensive tax controversy and litigation practice representing taxpayers in front of federal and state taxing authorities at all levels of the audit, controversy and litigation process. Caroline has significant experience representing both individual and business clients before the Massachusetts Appellate Tax Board, and in helping life science and technology clients navigate Massachusetts’ state and local tax landscape. Caroline also has in-depth federal tax controversy and litigation experience, having clerked in the chambers of the Honorable Joesph H. Gale of the United States Tax Court prior to her time at Sullivan, and having represented many individual and business clients before the Internal Revenue Service and in front of the United States Tax Court since.
Caroline is a member of Sullivan’s Women’s Initiative and co-chair of the Boston Bar Association’s State and Local Tax Committee. She speaks frequently on Massachusetts tax issues at professional conferences.
- E-mail: ckupiec@sullivanlaw.com
- Lawyer Page: https://www.sullivanlaw.com/caroline-a-kupiec
- One Post Office Square
Boston, MA 02109
- University of Washington, LL.M. and J.D. (with honors)
- Colorado College, B.A., cum laude
- Massachusetts, Massachusetts Bar Association
- Washington, Washington State Bar Association
- Boston Bar Association - State and Local Tax Committee
- Massachusetts Taxpayers Foundation - Trustee
39 The Best Lawyers in America® awards
5 Best Lawyers: Ones to Watch® in America awards
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- Tax Law - 2025
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