Due diligence is the systematic investigation of a business, its assets and its obligations before you commit capital or sign a binding agreement. In India it precedes almost every material transaction — an equity investment, a merger or acquisition, a joint venture, a slump sale, a bank loan, or even onboarding a critical vendor. The purpose is straightforward: confirm that what the target represents on paper matches reality, and surface hidden liabilities before they become your problem.
When and why it is done
Diligence usually begins once a term sheet or letter of intent is signed and a Non-Disclosure Agreement (NDA) is in place. The buyer or investor — through its own chartered accountants, company secretaries and lawyers — reviews the target so it can price the deal correctly, draft appropriate warranties and indemnities, and decide whether to proceed at all. A clean report supports a stronger valuation; red flags become negotiating levers or, sometimes, deal-breakers.
Types of due diligence
Most transactions run several streams in parallel. The exact scope depends on the target's sector — a real-estate SPV needs title and RERA review, while a manufacturing unit demands environmental and labour scrutiny.
| Type | Focus | Typical documents and sources |
|---|---|---|
| Financial | Revenue quality, debt, working capital, cash flows | Audited financials, management accounts, debtor/creditor ageing |
| Legal & secretarial | Corporate structure, contracts, charges, litigation | MOA/AOA, MCA master data, statutory registers, board and shareholder resolutions |
| Tax | Direct and indirect tax exposure | Income-tax returns, Form 26AS, GST returns (GSTR-1/3B/9), assessment and demand orders |
| Commercial | Market position, customers, competition | Customer contracts, order pipeline, industry data |
| HR | Workforce, payroll, ESOPs | Employment agreements, PF/ESIC records, ESOP scheme documents |
| IP & technology | Ownership of brands, code and patents | Trademark/patent registrations, assignment deeds |
How the process works
- Sign the NDA and agree the scope, checklist and timeline.
- Open a virtual data room and issue document requests to the target.
- Review the documents and cross-check MCA21 filings — annual return (MGT-7), financial statements (AOC-4) and registered charges (CHG-1) — against the accounts.
- Hold management interviews and, where relevant, conduct site visits.
- Verify statutory compliance: ROC filings, GST, TDS, PF/ESIC, and FEMA/FDI reporting where foreign investment is involved.
- Deliver a Due Diligence Report that flags findings by severity, with recommendations and quantified exposures.
Common red flags and mistakes
Buyers most often get caught out by what was never disclosed rather than by what the accounts show. Watch for:
- Undisclosed litigation or pending tax demands at income-tax, GST or NCLT forums.
- Unregistered charges, contingent liabilities or personal guarantees given by promoters.
- A mismatch between turnover in GST returns, income-tax returns and the audited financials.
- Poorly maintained statutory registers under Section 88, or related-party transactions not disclosed under Section 188.
- Relying only on management representations without independently verifying MCA and GSTN records.
Practical tips
Insist that the seller preserve books of account for at least the last eight financial years, as required under Section 128 of the Companies Act, 2013, and reconcile them line by line. For larger public companies, a Secretarial Audit Report under Section 204 — mandatory where paid-up capital is ₹50 crore or more, or turnover is ₹250 crore or more — is a useful independent compliance check. Fix the cut-off date for representations, and carry unresolved risks into the definitive agreement as specific indemnities or an escrow holdback rather than leaving them open.