Capitol Hill veteran George Callas joins Steptoe & Johnson

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

Capitol Hill veteran George Callas joins Steptoe & Johnson

People Thumbnail

George Callas has joined Steptoe & Johnson as managing director in the firm’s Washington DC office.



Callas will serve in the firm’s government affairs and public policy and tax groups. Callas is a Capitol Hill veteran who spent 15 years working on tax issues at the committee level and for the Republican leadership.

Prior to joining Steptoe & Johnson, he was a senior tax counsel to Speaker of the House Paul Ryan and among the chief architects of the Tax Cuts and Jobs Act (TCJA) legislated in December 2017. In this role, Callas was one of the leading negotiators in getting the tax bill through Congress.

Speaker Ryan has said about Callas: "He laid the groundwork for our eventual success with his early work on draft reform legislation while at the Ways and Means Committee, and he drove us over the finish line as my senior tax counsel in the Speaker’s Office."

Steptoe & Johnson expects Callas to provide great value to clients, from large multinational corporations to trade associations, in navigating the new US tax laws, which are still being analysed by tax professionals.



more across site & shared bottom lb ros

More from across our site

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
While some believe it could have a positive effect on the wider advisory landscape, others argue that HMRC’s ‘red tape’ exercise won’t deter bad actors
The political optics of the US’s carve-out deal are poor, but as the Fair Tax Foundation’s Paul Monaghan writes, it preserves pillar two’s guiding ethos
The big four firm reportedly sent ‘threatening’ correspondence to Unity Advisory over its hiring of ex-PwC partners; plus tax recruitment news from the week
Gift this article