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About Kostelanetz LLP

“A firm of extraordinary quality” – The Legal 500

“An expert tax boutique” – Chambers USA

Over the past 75 years, Kostelanetz LLP (formerly known as Kostelanetz & Fink, LLP, and sometimes called K&F) has built a global reputation as the law firm of choice for clients facing high-stakes controversies and negotiations with government agencies. Our attorneys have unparalleled experience in tax controversies and white-collar criminal defense and are regularly called upon to handle the most challenging and sensitive cases and internal investigations. Important parts of the firm’s practice include tax and estate planning, commercial litigation, government procurement, and government contracting.

Kostelanetz attorneys are highly skilled and approach each matter strategically based on decades of administrative and litigation experience. Many of our attorneys have served as former senior officials within the Internal Revenue Service, the U.S. Department of Justice, and other federal and state prosecutors’ offices. Several of the firm’s attorneys have served as federal judicial law clerks and/or have master’s degrees in taxation.

The firm and its attorneys have been honored and recognized by major, independent national and international legal rankings agencies, including Chambers USA, The Legal 500, Best Lawyers, and Super Lawyers.

Kostelanetz attorneys are thought leaders who frequently write articles for The CPA Journal, Tax Notes, The Journal of Tax Practice & Procedure, Law360, and other reputable publications on the latest topics and trends in tax law. Several of our partners teach at top law schools (such as NYU and Georgetown), present CLE/CPE courses on tax-related and legal ethics topics, and are often hired as expert witnesses or consultants in tax controversy litigation. 

Our individual and institutional clients have immediate access to the firm’s partners and most senior attorneys. The firm focuses on providing value to its clients and is sensitive to the balance between cost and benefit inherent in every legal assignment. As a result, we have the depth and flexibility to add attorney strength as the needs of the client or matter demand.

Kostelanetz and its attorneys have been honored and recognized by major, independent national and international legal rankings agencies, including Chambers USA, The Legal 500, Best Lawyers, and Super Lawyers. Our lawyers are members of some of the most prestigious legal associations in the country, including the American College of Trial Lawyers, the American College of Tax Counsel, and the Litigation Counsel of America. Our attorneys have also been included on lists of the most influential lawyers in New York, including City & State NY’s “Law Power 100” list.

Kostelanetz LLP is a destination for the legal elite.  Lawyers come to our boutique practice because we focus on our lawyers’ professional development and pursue excellence.  Our supportive culture is tightly tied to low associate-turnover, high promotion rates, outstanding legal work, and excellent client service.