Hap Shashy specializes in tax matters. As a partner and group leader of our Tax practice, Hap advises clients in a number of industries on a wide variety of tax planning and tax controversy issues.

Hap is a former IRS Chief Counsel. He represents domestic and foreign clients in a wide range of complex tax planning, tax regulatory and tax controversy matters. He represents clients in numerous industries, including energy, natural resources, healthcare, finance, technology, telecommunications, media, real estate, industrials and transportation.

Hap's tax planning matters include domestic and cross-border mergers and acquisitions, partnerships and joint ventures, and financing transactions, as well as leasing and licensing transactions, natural resources and commodities transactions, and bankruptcy and debt restructurings. His tax regulatory matters include tax ruling requests and administrative projects before the IRS and the U.S. Treasury. Hap also represents clients in tax controversy and litigation matters, including alternative dispute resolution.

As IRS Chief Counsel, Hap was responsible for the IRS regulation and ruling program, and for litigation before the U.S. Tax Court. Under his leadership, the IRS Office of Chief Counsel litigated a variety of tax cases and issued numerous tax regulations and rulings covering corporations, partnerships, transfer pricing, foreign tax credits, financial instruments and derivatives, and other topics.

A frequent author and speaker, Hap has also served as an adjunct professor of Tax at New York University School of Law and at Southern Methodist University School of Law. Hap serves on the advisory boards of the NYU Tax Institute, the Texas Federal Tax Institute and the Florida Tax Institute. He has been regularly recognized by Chambers USA, America’s Leading Lawyers for Business, The Best Lawyers in America, Washingtonian's Best Lawyers in Washington, D.C., and Legal 500.

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