A&O Shearman

United Kingdom

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2026 Edition

General corporate tax

Tier 2

49 firms ranked

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Tier 1

Baker McKenzie

6 practice areas

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Clifford Chance

6 practice areas

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Deloitte

7 practice areas

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EY

7 practice areas

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Freshfields

5 practice areas

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KPMG

7 practice areas

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Kirkland & Ellis

5 practice areas

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Macfarlanes

4 practice areas

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PwC

7 practice areas

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Slaughter and May

5 practice areas

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Tier 2

A&O Shearman

5 practice areas

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Alvarez & Marsal

6 practice areas

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Bryan Cave Leighton Paisner

5 practice areas

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DLA Piper

6 practice areas

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Debevoise & Plimpton

3 practice areas

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Eversheds Sutherland

5 practice areas

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Gibson Dunn & Crutcher

5 practice areas

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Grant Thornton

6 practice areas

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Herbert Smith Freehills Kramer

5 practice areas

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Hogan Lovells Cadwalader

6 practice areas

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Latham & Watkins

3 practice areas

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Linklaters

4 practice areas

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Mayer Brown

3 practice areas

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Norton Rose Fulbright

4 practice areas

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Paul Hastings

3 practice areas

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Pinsent Masons

5 practice areas

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Sidley Austin

5 practice areas

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Simmons & Simmons

6 practice areas

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Skadden Arps Slate Meagher & Flom

4 practice areas

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Weil Gotshal & Manges

3 practice areas

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Wiggin

5 practice areas

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Tier 3

Ashurst Perkins Coie

4 practice areas

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CMS Cameron McKenna Nabarro Olswang

4 practice areas

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Cleary Gottlieb Steen & Hamilton

5 practice areas

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Davis Polk & Wardwell

5 practice areas

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FTI Consulting

6 practice areas

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McDermott Will & Schulte

5 practice areas

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RSM

3 practice areas

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Sullivan & Cromwell

3 practice areas

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Travers Smith

3 practice areas

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Watson Farley & Williams

5 practice areas

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Winston Taylor

5 practice areas

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Tier 4

Crefovi

2 practice areas

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Innovate Tax

5 practice areas

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MHA MacIntyre Hudson

6 practice areas

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Rosetta Tax

2 practice areas

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Other notable

Brown Rudnick

2 practice areas

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Goodwin Procter

5 practice areas

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Vistra

2 practice areas

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Indirect tax

Other notable

22 firms ranked

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Tier 1

Baker McKenzie

6 practice areas

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Deloitte

7 practice areas

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EY

7 practice areas

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KPMG

7 practice areas

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PwC

7 practice areas

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Tier 2

Alvarez & Marsal

6 practice areas

View profile

Bryan Cave Leighton Paisner

5 practice areas

View profile

Clifford Chance

6 practice areas

View profile

DLA Piper

6 practice areas

View profile

Eversheds Sutherland

5 practice areas

View profile

Herbert Smith Freehills Kramer

5 practice areas

View profile

Pinsent Masons

5 practice areas

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Simmons & Simmons

6 practice areas

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Tier 3

Ashurst Perkins Coie

4 practice areas

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Gibson Dunn & Crutcher

5 practice areas

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Hogan Lovells Cadwalader

6 practice areas

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Mishcon de Reya

4 practice areas

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Norton Rose Fulbright

4 practice areas

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Tier 4

CMS Cameron McKenna Nabarro Olswang

4 practice areas

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Grant Thornton

6 practice areas

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Other notable

A&O Shearman

5 practice areas

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Vistra

2 practice areas

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Transactional tax

Tier 2

43 firms ranked

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Tier 1

Baker McKenzie

6 practice areas

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Clifford Chance

6 practice areas

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Deloitte

7 practice areas

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EY

7 practice areas

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Freshfields

5 practice areas

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Gibson Dunn & Crutcher

5 practice areas

View profile

KPMG

7 practice areas

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Kirkland & Ellis

5 practice areas

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Linklaters

4 practice areas

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Macfarlanes

4 practice areas

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PwC

7 practice areas

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Sidley Austin

5 practice areas

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Skadden Arps Slate Meagher & Flom

4 practice areas

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Slaughter and May

5 practice areas

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Tier 2

A&O Shearman

5 practice areas

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Ashurst Perkins Coie

4 practice areas

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Bryan Cave Leighton Paisner

5 practice areas

View profile

Cleary Gottlieb Steen & Hamilton

5 practice areas

View profile

DLA Piper

6 practice areas

View profile

Debevoise & Plimpton

3 practice areas

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Eversheds Sutherland

5 practice areas

View profile

Grant Thornton

6 practice areas

View profile

Herbert Smith Freehills Kramer

5 practice areas

View profile

Hogan Lovells Cadwalader

6 practice areas

View profile

Latham & Watkins

3 practice areas

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Mayer Brown

3 practice areas

View profile

Norton Rose Fulbright

4 practice areas

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Paul Hastings

3 practice areas

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Simmons & Simmons

6 practice areas

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Weil Gotshal & Manges

3 practice areas

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Wiggin

5 practice areas

View profile

Winston Taylor

5 practice areas

View full profile

Tier 3

Alvarez & Marsal

6 practice areas

View profile

CMS Cameron McKenna Nabarro Olswang

4 practice areas

View profile

Davis Polk & Wardwell

5 practice areas

View profile

FTI Consulting

6 practice areas

View profile

Pinsent Masons

5 practice areas

View profile

Sullivan & Cromwell

3 practice areas

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Travers Smith

3 practice areas

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Watson Farley & Williams

5 practice areas

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Tier 4

McDermott Will & Schulte

5 practice areas

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RSM

3 practice areas

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Other notable

Goodwin Procter

5 practice areas

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Transfer pricing

Tier 3

19 firms ranked

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Tier 1

Baker McKenzie

6 practice areas

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DLA Piper

6 practice areas

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Deloitte

7 practice areas

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EY

7 practice areas

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Grant Thornton

6 practice areas

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KPMG

7 practice areas

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PwC

7 practice areas

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Tier 2

Alvarez & Marsal

6 practice areas

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FTI Consulting

6 practice areas

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Freshfields

5 practice areas

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Hogan Lovells Cadwalader

6 practice areas

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Kroll

3 practice areas

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McDermott Will & Schulte

5 practice areas

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Simmons & Simmons

6 practice areas

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Tier 3

A&O Shearman

5 practice areas

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BDO

3 practice areas

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MHA MacIntyre Hudson

6 practice areas

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Macfarlanes

4 practice areas

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Transfer Pricing Solutions

3 practice areas

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Direct Tax

Pillar two is revising global tax competition with a 15% minimum tax rate

Future of pillar two uncertain after Section 899 withdrawal averts ‘catastrophe’

Section 899 of the ‘one big beautiful’ bill would have spelled disaster for many international investors into the US, but following its shelving, attention turns to the fate of the OECD’s pillars

Ralph Cunningham, July 16 2025

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