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Shawn O’Brien
Subscribe to Shawn O’Brien's PostsShawn O’Brien is nationally recognized by his peers and clients as a leading tax practitioner with a focus on tax disputes and controversies involving state, federal and international tax authorities. Drawing on his 25 years of experience, Shawn represents clients in tax examinations and administrative appeals and, when necessary, serves as a forceful advocate in litigation before the US Tax Court, US district courts, the US Court of Federal Claims, state courts and federal appellate courts. Read Shawn O’Brien's full bio.
Upcoming Webinar: Navigating IRS Tax Refunds
By Shawn O’Brien, Susan E. Ryba and Samuel F. Hamer on Mar 31, 2025
Posted In Tax Refunds
On April 9, 2025, join McDermott’s Tax Controversy & Litigation Group for an insightful webinar on the intricacies of claiming and collecting Internal Revenue Service (IRS) tax refunds. This session is designed for tax professionals, legal practitioners, and anyone interested in understanding the complexities of the IRS refund claims process and what to watch out...
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Upcoming Webinar: Defeating IRS Penalties
By Edward L. Froelich, Shawn O’Brien and Michael J. Scarduzio on Feb 25, 2025
Posted In Court Procedure Matters, IRS Audits
The IRS has an extensive set of penalties that it can impose on both corporate and individual taxpayers, and recent audit trends indicate a growing tendency to apply multiple penalties. Join McDermott’s Tax Controversy & Litigation Group on March 5, 2025, for a webinar that will dive into the penalties the IRS may pursue and...
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IRS Announces New Compliance Initiatives to Collect More Corporate Tax Using Inflation Reduction Act Funds
By Kevin Spencer, Edward L. Froelich and Shawn O’Brien on Oct 24, 2023
Posted In IRS Audits, IRS Guidance
On October 20, 2023, the Internal Revenue Service (IRS) announced new initiatives “to ensure large corporations pay taxes owed.” These initiatives leverage the substantial additional congressional funding that was given to the IRS thanks to the Inflation Reduction Act of 2022 (IRA). (We previously reported on how IRS enforcement is impacted by IRA funding here.)...
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