Strategic Consulting and Big Four Market Update 2026

March, 2026

Following a period of strong post‑pandemic expansion, the Big Four and leading strategy consulting firms are entering a phase of growth normalization marked by revenue convergence, selective hiring, organizational realignment, and increased focus on productivity and technology‑enabled delivery. Firms are prioritizing consulting‑led growth, strengthening leadership and governance structures, and expanding alliances particularly around AI, cloud, and digital platforms to support scalable and repeatable client outcomes.

This report examines key business trends across the Big Four and strategy consulting firms over the period analyzed, with a focus on revenue performance, service‑line and regional shifts, talent and leadership developments, and partnership activity. It also reviews changes in productivity metrics and highlights the growing role of AI‑related capabilities and ecosystem partnerships in shaping firm strategies and operating models.

Featured providers

This report analyzes the Big Four – Deloitte, EY, KPMG, and PwC, and Strategy Consulting firms – McKinsey & Company, Bain and Company, and Boston Consulting Group.

Methodology

Our evaluation of service providers is based on secondary research input, public disclosures, and Avasant’s ongoing market interactions. The assessment encapsulates the business trends, leadership movements, and strategic partnerships for the featured providers.

Table of contents

  • Executive summary (Pages 3–4)
  • Revenue overview (Pages 5–13)
  • Talent and Leadership overview (Pages 14–22)
  • Strategic partnerships (Pages 23–28)
  • Key contacts (Page 30)

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Avasant’s research and other publications are based on information from the best available sources and Avasant’s independent assessment and analysis at the time of publication. Avasant takes no responsibility and assumes no liability for any error/omission or the accuracy of information contained in its research publications. Avasant does not endorse any provider, product or service described in its RadarView™ publications or any other research publications that it makes available to its users, and does not advise users to select only those providers recognized in these publications. Avasant disclaims all warranties, expressed or implied, including any warranties of merchantability or fitness for a particular purpose. None of the graphics, descriptions, research, excerpts, samples or any other content provided in the report(s) or any of its research publications may be reprinted, reproduced, redistributed or used for any external commercial purpose without prior permission from Avasant, LLC. All rights are reserved by Avasant, LLC.

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