Philip Karter specializes in tax controversy and tax litigation matters. In his 35-year career, Karter has litigated Federal tax cases in the United States District Courts, the United States Tax Court and the United States Court of Federal Claims, and argued in the United States Court of Appeals in multiple circuits.

His range of trial experience, which includes dozens of jury and non-jury cases tried to judgment, encompasses a wide variety of complex and high-profile tax matters, a number of which have involved issues of first impression. Karter's deep experience in the tax controversy and litigation process, working both for and against the government, also provides him with valuable insights on how to structure and document transactions to avoid future tax disputes or, if such disputes are inevitable, to position such transactions in the best possible light to successfully withstand IRS scrutiny and challenge.

Representative examples of tax controversy and litigation matters/issues handled by Karter include tax and tax penalty issues involving cryptocurrency (Bitcoin, Ethereum, etc.).