Mumbai is the financial heartbeat of India. From stock-market giants and banks to startups, manufacturing groups, real estate companies, exporters, NBFCs and multinational corporations, almost every serious business in the city needs proper accounting, auditing, taxation and compliance support. This is where CA firms play a major role.
In 2026, a Chartered Accountancy firm is not limited to filing tax returns or preparing balance sheets. Reputed CA and professional services firms now handle statutory audits, internal audits, GST, income tax, transfer pricing, risk advisory, due diligence, business restructuring, valuation, financial reporting, forensic review, ESG reporting and corporate governance. For a city like Mumbai, where business moves fast and regulations are strict, choosing a reputed CA firm is very important.
Based on Mumbai presence, brand reputation, audit and advisory strength, corporate client base and industry credibility, here are the top 5 CA companies in Mumbai in 2026.
1. Deloitte India / Deloitte Haskins & Sells LLP
Address: One International Centre, Tower 3, 27th–32nd Floor, Senapati Bapat Marg, Elphinstone Road West, Mumbai – 400013, Maharashtra.
Deloitte is one of the most reputed professional services firms in Mumbai and India. Its Mumbai office is located at One International Centre, Tower 3, on Senapati Bapat Marg, Elphinstone Road West. The official Deloitte office page lists this Mumbai address across the 27th to 32nd floors.
For CA students and professionals, Deloitte is a dream name because of its strong exposure in audit, assurance, taxation, consulting, financial advisory and risk-related work. The firm works with large corporates, listed companies, multinational clients, financial institutions and fast-growing businesses.
Deloitte is especially suitable for companies that need structured audit processes, complex accounting support, internal controls, regulatory consulting, tax planning and business advisory. In 2026, it remains one of the top choices in Mumbai for high-quality professional services and corporate finance-related work.
2. PwC India / Price Waterhouse Network
Address: 7th & 8th Floor, IT Building No. 3, Nesco IT Park, Western Express Highway, Goregaon East, Mumbai – 400063, Maharashtra.
PwC is another globally respected accounting and professional services network with a strong Mumbai presence. The PwC India office listing mentions its Mumbai Goregaon office at the 7th and 8th floors of IT Building No. 3, Nesco IT Park, Western Express Highway, Goregaon East.
PwC is known for audit and assurance, tax, consulting, deals, risk, technology, sustainability, workforce and business transformation services. Its service menu includes audit and assurance, financial statement audit, accounting advisory, internal audit, tax, deals and risk services.
In Mumbai, PwC is a strong option for large companies, multinational businesses, financial services firms, technology companies and corporates going through expansion, restructuring or compliance-heavy situations. For CA professionals, PwC offers exposure to global standards, industry-specific work and high-quality corporate clients.
3. EY India / S. R. Batliboi & Co. LLP
Address: 5th Floor, Block B-2, Nirlon Knowledge Park, Off Western Express Highway, Goregaon East, Mumbai – 400063, Maharashtra.
Other Mumbai Office: 14th Floor, The Ruby, 29 Senapati Bapat Marg, Dadar West, Mumbai – 400028, Maharashtra.
EY is one of the biggest names in assurance, tax, consulting and transaction advisory. Its official India location page lists Mumbai offices at Nirlon Knowledge Park, Goregaon East, and The Ruby, Dadar West.
For audit and assurance work, S. R. Batliboi & Co. LLP is one of the important CA firm entities connected with the EY ecosystem in India. Its official site states that S. R. Batliboi & Co. LLP is a Chartered Accountants LLP registered with ICAI, and also registered with NFRA, PCAOB, FRC UK and CPAB Canada.
EY/S. R. Batliboi is highly reputed for statutory audit, assurance, tax audit, valuation, certificates, special purpose reports, transaction support and advisory work. In 2026, it remains one of the best names in Mumbai for companies that need serious audit quality, regulatory understanding and corporate reporting support.
4. KPMG India / B S R & Co. LLP
Address: Nesco IT Park 4, 16th Floor, North Wing, Nesco Center, Western Express Highway, Goregaon East, Mumbai – 400063, Maharashtra.
Other Mumbai Office: Godrej Business District, First Floor, 02/Block A, Pirojshanagar, Vikhroli West, Mumbai – 400079, Maharashtra.
KPMG is another top professional services firm with multiple offices in Mumbai. Its official office page lists KPMG in India locations at Nesco IT Park 4 in Goregaon East, Godrej Business District in Vikhroli West and Lodha Excelus in Lower Parel/Mahalakshmi.
For audit-related services, B S R & Co. LLP is a well-known CA firm connected with the KPMG network in India. Its official office page lists Mumbai offices at Nesco IT Park 4, Goregaon East, and Lodha Excelus, N. M. Joshi Marg, Mahalakshmi.
KPMG/BSR is strong in assurance, tax, advisory, risk consulting, financial services, technology consulting, regulatory support and corporate governance. It is especially suitable for listed companies, banks, NBFCs, technology firms, manufacturing businesses and large corporate groups.
5. Grant Thornton Bharat LLP
Address: 42nd Floor, Building Commerz III, International Business Park, Oberoi Garden City, Mumbai – 400063, Maharashtra.
Grant Thornton Bharat is a highly reputed accounting, consulting and advisory firm with a strong Mumbai office at Commerz III, Oberoi Garden City. Its official location page lists the Mumbai office on the 42nd floor of Building Commerz III and also gives the Mumbai contact number.
Grant Thornton Bharat provides services across assurance, tax, regulatory and finance consulting, ESG and risk consulting, deals consulting and business consulting. Its Mumbai location page also links to these major service categories.
In 2026, Grant Thornton Bharat is a strong choice for mid-sized companies, large private businesses, startups, family-owned groups, multinational subsidiaries and companies preparing for growth, funding, mergers or compliance upgrades. It has a good balance of professional quality, practical business understanding and advisory depth.
Conclusion
Mumbai has many CA firms, but Deloitte, PwC, EY/S. R. Batliboi, KPMG/BSR and Grant Thornton Bharat stand out because of their reputation, corporate client exposure, audit quality and wide professional service range. These firms are suitable for companies that need more than basic accounting. They help businesses manage audits, tax, risk, transactions, financial reporting and regulatory compliance at a serious corporate level.
For CA students and professionals, these firms are also among the best places to gain exposure, learn corporate systems and build a strong career in audit, taxation, advisory or finance consulting.