Comparison
CA Firm vs Big 4
When taking your company public, should you appoint a Big 4 audit firm or work with a CA firm? Here is the unfiltered, founder-friendly comparison.
Side-by-side
Quick comparison.
Big 4 vs CA firm for IPO and audit — the honest comparison.
| Criterion | CA Firm | Big 4 |
|---|---|---|
| Cost (audit only) | ₹15 lakh – ₹2 crore (Main Board) | ₹50 lakh – ₹5 crore+ |
| Brand cachet with investors | Established but increasingly questioned post-IL&FS, DHFL | Strong — premium firms can equally serve high-quality clients |
| Partner attention | Junior managers handle daily work, partner involved at sign-off | Partner-led throughout — founder has direct access |
| Speed & responsiveness | Slower — process-heavy, multiple review layers | Faster — fewer layers, direct decisions |
| Industry expertise | Broad but generalist | Often deeper in specific sectors and stages |
| Audit quality (post NFRA) | High but commoditised | High — same audit standards apply |
| Conflict checks | Strict — may decline if conflict with another engagement | Flexible — fewer concurrent conflicting mandates |
| Post-IPO support | Limited — typical audit-only relationship | Comprehensive — ongoing CFO support, advisory, compliance |
| Best for | Large IPOs (₹500cr+) where investor brand-recognition matters most | Mid-market IPOs, SME IPOs, founder-friendly relationships |
FAQ
Common questions.
Answers to questions Indian founders ask most often about this choice.
- Do I need a Big 4 auditor for my IPO? — Not legally. SEBI requires the auditor to be peer-reviewed and meet specific criteria — many top CA firms qualify. Big 4…
- Is a Big 4 audit always 'higher quality'? — All SEBI peer-reviewed auditors apply the same auditing standards. Differences are more in process, brand and team depth…
- What about the merchant banker — Big 4 too? — Different decision. Merchant bankers must be SEBI-registered Category I (most are). Top boutique merchant bankers are of…
- Why do founders sometimes prefer CA firms? — Founder-level attention, faster decisions, deeper post-IPO relationship, lower cost. For most ₹100–500cr IPOs and all SM…
- Can BQP serve as IPO auditor? — BQP is the IPO advisor — we lead pre-IPO readiness, DRHP, merchant banker management and post-listing compliance. The au…