Caroline A. Kupiec

Caroline A. Kupiec


Sullivan & Worcester LLP

Recognized in The Best Lawyers in America® since 2026

Recognized in Best Lawyers: Ones to Watch® in America from 2025-2025

Boston, Massachusetts

Practice Areas

Tax Law

Send Caroline A. Kupiec an email at ckupiec@sullivanlaw.com Navigate to map location for Caroline A. Kupiec
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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.

Location
  • One Post Office Square
    Boston, MA 02109
Education
  • University of Washington, LL.M. and J.D. (with honors)
  • Colorado College, B.A., cum laude
Bar Admissions
  • Massachusetts, Massachusetts Bar Association
  • Washington, Washington State Bar Association
Affiliations
  • Boston Bar Association - State and Local Tax Committee
  • Massachusetts Taxpayers Foundation - Trustee

Sullivan & Worcester LLP
Headquarters: Boston, Massachusetts

39 The Best Lawyers in America® awards

5 Best Lawyers: Ones to Watch® in America awards

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Recognized in The Best Lawyers in America® 2026 for work in:
  • Tax Law
Recognized in Best Lawyers: Ones to Watch® in America from 2025-2025 for work in:
  • Tax Law - 2025

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Publications

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