India’s audit market is undergoing another significant period of change, with 1,030 audit mandates across 997 companies due to expire during FY2026–27, according to Prime Database research reported by The Economic Times.
Of those, 385 auditors are required to rotate after completing the maximum permitted tenure, according to earlier reporting on the same research.
A further 314 auditor appointments across 305 companies are due to expire in FY2027–28.
The scale of the forthcoming changes is creating opportunities for firms competing against Deloitte, PwC, EY and KPMG. But evidence from previous rotation cycles suggests that changing auditors does not necessarily reduce market concentration.
The Big Six are gaining ground
Despite mandatory rotation requirements, India’s six largest international audit networks — Deloitte, PwC, EY, KPMG, BDO and Grant Thornton — have strengthened their position among the country’s largest listed companies.
According to Prime Database figures published in June, the Big Six audited 330 of the NIFTY 500 companies in FY2026, representing 66%, compared with 65% a year earlier.
Concentration is even more pronounced when measured by market capitalisation. Across the broader listed-company universe examined by Prime Database, the Big Six audited companies representing 61% of total market value.
The research also revealed a highly fragmented wider profession.
Of 958 audit firms serving 2,436 listed companies covered by the study, 649 audited just one listed company, while only 25 audited ten or more.
This concentration raises questions about whether the next rotation cycle will broaden competition or redistribute appointments among the same established networks.
Audit committees are raising their demands
The latest competition is also changing how companies select auditors.
In an October investigation, The Economic Times reported that audit committees were increasingly scrutinising proposed engagement teams, partner continuity, industry experience, regulatory inspection findings and technology capabilities.
Potential conflicts involving non-audit services are receiving particular attention.
Companies are examining whether existing tax, advisory and consulting engagements must be discontinued before a new statutory auditor can take over, creating additional complications for the Big Four’s multidisciplinary businesses.
India wants domestic accounting champions
The rotation cycle coincides with a broader government-backed effort to create Indian accounting and consulting firms capable of competing with international networks.
The Institute of Chartered Accountants of India (ICAI) has developed frameworks intended to facilitate mergers, resource-sharing and collaboration between domestic practices.
Its Global Networking Guidelines, 2025, notified in February 2026, also proposed registration and oversight requirements for relationships between Indian accounting firms and international networks.
However, further implementation was placed in abeyance in July, illustrating the regulatory uncertainty surrounding parts of the reform programme.
The Indian government’s efforts to strengthen domestic professional-services firms therefore coincide with a substantial commercial opportunity — but neither mandatory auditor rotation nor regulatory reform guarantees that independent Indian firms will win a larger share of major listed-company audits.
The central question is whether the coming wave of appointments will create new competitors or reinforce the dominance of the existing international networks.
Related research: Who audits the NIFTY 50?
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About the author: Claudine Cassar is the founder and editor of Big4News, covering audit, consulting, regulation and governance across Deloitte, PwC, EY and KPMG.