Mayer Brown appoints Gary Wilcox as partner in Washington

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Mayer Brown appoints Gary Wilcox as partner in Washington

Mayer Brown has appointed Gary Wilcox as a partner in its tax controversy and transfer pricing practice in its Washington DC office.



Wilcox specialises is mergers and acquisitions (M&A), post-transaction integration structuring, transfer pricing and tax disputes with the Internal Revenue Service. He is also a frequent lecturer and author on both controversy and corporate tax issues.

Before joining the firm, Wilcox served as the principal and co-leader of PwC’s tax controversy and regulatory services practice, where he advised clients throughout the audit management, appeals and resolution phases of IRS disputes. Before assuming this role, Wilcox also served as co-leader of PwC’s national M&A tax group (1997-2002), where he focused primarily on the structuring of cross-border corporate transactions.

With his previous experience as the IRS Deputy Chief Counsel from 2002 to 2004, Wilcox brings with him insights into tax policies at both the Department of Treasury and the IRS, in addition to his litigation experience, having served as litigation counsel in significant Tax Court cases.

Wilcox’s arrival is set to strengthen Mayer Brown’s strong tax controversy practice, which over the past few years, has added more than two dozen high-ranking government officials and notable lateral partners to its division.




more across site & shared bottom lb ros

More from across our site

As Coca-Cola awaits a crucial 11th Circuit Court of Appeals decision this year, its multibillion-dollar tax dispute could have profound implications for investors, cash flow, and corporate transparency
However, women in tax face greater career obstacles than their male counterparts, an exclusive ITR survey of more than 100 women tax leaders revealed
Under Jeff Soar’s leadership, WTS UK aims to scale to 100 partners within five years and challenge the big four
As the firm embarks on a major shakeup of its EMEA partnerships, some staff will be watching nervously
The buyout of Hucke and Associates continues Ryan’s streak of firm acquisitions; in other news, a UK appeal against VAT on private school fees was dismissed
Tax teams are responding to usual client demand in the region, albeit with increased working from home flexibility, local sources indicate
A 120-plus-day delay to refunds would cost taxpayers almost $3bn in additional interest, the Cato Institute warned; plus indirect tax updates from February
The Office for Budget Responsibility’s pessimistic pillar two forecast accompanied the UK chancellor’s muted Spring Statement, dubbed ‘as dull as possible’ by one adviser
Digital tax reform is dissolving the old ‘temporal buffer’, forcing systems, institutions, and professionals to adapt as real-time reporting reshapes governance, capability, and compliance
Our first instalment features analysis of Deloitte’s landmark EMEA merger, Donald Trump’s Supreme Court tariff showdown and Venezuela’s tax evolution
Gift this article