India's audit market in FY26 remained heavily consolidated around major institutional players, with the Big Four and leading mid-tier firms dominating the market. According to data compiled by Prime Infobase, EY Group, KPMG Group and Deloitte Group secured the top three spots among the 10 auditors that handled the highest number of listed company audits in the financial year 2025-26. EY Group retained its top position by auditing 187 companies in FY26, registering a 3% growth from 182 companies in FY25. KPMG Group recorded a sharp 11% volume growth, rising to 157 companies, while Deloitte Group held the third spot with 131 companies, down slightly from 137 in the previous fiscal. The data reflects the ongoing consolidation trends in India's audit market, where concentration among large firms continues to dominate the landscape despite some growth in smaller players.
The Big Four consulting firms are expanding into India's tier-2 and -3 cities, driven by smaller businesses and family-run enterprises increasingly seeking professionalization. According to Mint, cities such as Jaipur, Coimbatore, Mysore, Bhubaneswar, Jamshedpur, Kochi, Chandigarh, Trivandrum and Gandhinagar are emerging as key markets. Deloitte's Bhubaneswar operations exemplify this growth, employing 2,000 people when it started in 2023 and now 5,000. As Debasish Mishra, chief growth officer for Deloitte South Asia, told Mint, "We have opened offices in non-metro cities because we realized that there are firms there with revenue of over ₹200-500 crore and want to grow 10x in size." While metros still account for 80% of business, executives see the balance gradually shifting as smaller cities drive demand for tax, succession planning, M&A, and digital transformation services.
The BSE SME platform equity turnover surged to ₹39,471 crore in FY26 from just ₹5,207 crore in FY22, indicating significant growth in smaller businesses. Global Capability Centres (GCCs) represent another major growth engine, with India hosting 2,117 GCCs employing 2.36 million professionals and reporting $98.4 billion in cumulative revenue in FY26. According to a Zinnov-Nasscom GCC Value Orbit report, the GCC market has grown at a revenue compounded annual growth rate (CAGR) of approximately 9.9% and talent CAGR of 6.2% since FY2021. Agentic AI adoption is enabling this expansion, allowing the Big Four to offer consulting and tax services in non-metros without requiring partners and teams to travel extensively. Senior partners report that SMEs from non-metros are becoming "big clients" seeking services ranging from tax advisory to succession planning and cyber security.
While volume signifies market reach, market capitalisation metrics underscore the financial scale of the corporations these auditors oversee. In FY26, KPMG Group led by market capitalisation share, auditing companies that constitute 15.67% (₹71,14,060 crore) of the total market capitalisation of all companies covered in Prime Infobase's report. The corporate audit landscape continues to be heavily consolidated around major institutional players, with concentration persisting as limited firms handle multiple mandates, while auditor exits and tenure completions signal ongoing churn within the listed companies' audit ecosystem.
