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

The network’s tax service line grew more than those for audit and assurance, advisory and legal services over the same period
The deal is a ‘real win’ for US-based multinationals and its announcement is a welcome relief, experts have told ITR
Tom Goldstein, who is now a blogger, is being represented by US law firm Munger, Tolles & Olson
In looking at the impact of taxation, money won't always be all there is to it
Australia’s Tax Practitioners Board is set to kick off 2026 with a new secretary to head the administrative side of its regulatory activities.
Ireland’s Department of Finance reported increased income tax, VAT and corporation tax receipts from 2024; in other news, it’s understood that HSBC has agreed to pay the French treasury to settle a tax investigation
The Australian Taxation Office believes the Swedish furniture company has used TP to evade paying tax it owes
Supermarket chain Morrisons is facing a £17 million ($23 million) tax bill; in other news, Donald Trump has cut proposed tariffs
The controversial deal will allow US-parented groups to be carved out from key aspects of pillar two
Awards
ITR invites tax firms, in-house teams, and tax professionals to make submissions for the 2027 World Tax rankings and the 2026 ITR Tax Awards globally
Gift this article