William Colgin

William F. Colgin Jr. primarily represents taxpayers in complex civil tax controversies and tax litigation. Bill litigates in the US Tax Court, federal district courts, state courts, and appellate courts. He represents clients in Internal Revenue Service (IRS) examinations and appeals, and in similar proceedings before state taxing authorities. He began his tax litigation career as a trial attorney in the Tax Division of the US Department of Justice, representing the IRS. Bill has experience with numerous tax controversies and hundreds of docketed cases. He is involved with complex corporate examinations, numerous IRS Appeals negotiations, multistate coordinated resolutions of state tax issues, anonymous IRS disclosure disputes, Freedom of Information Act (FOIA) requests, and many other types of administrative procedures. His cases and controversies typically involve high dollar amounts and tend to involve international tax, transfer pricing, intellectual property, economic substance, and other high-profile areas of tax dispute. He works with clients in many industries including high technology, semiconductor, medical device, pharma, and financial services. He often teams with partners in other practice areas to help solve issues that involve multiple disciplines in addition to tax. Bill’s SALT cases have involved class action, Qui Tam, and False Claims Act suits involving state-specific and multistate issues at the state trial, appellate and supreme court levels, as well as federal courts. He has also managed complex, large dollar multistate controversies to successful resolution. SALT tax types include income, payroll, business, employment, franchise, sales, and transfer taxes. Bill works with experts in a variety of disciplines including intellectual property, economics, transfer pricing, manufacturing, accounting, stock options, valuations, finance, and banking.