Due Diligence

Why the term matters

Private-equity diligence can include financial, commercial, operational, legal, tax, regulatory, technology, cybersecurity, human-capital, environmental and insurance workstreams. The scope depends on the target and transaction. Diligence can confirm the investment thesis, expose risks that require price or contract changes, or cause the buyer to stop pursuing the deal.

Diligence is broader than reviewing financial statements

CFA Institute describes private-market diligence as a comprehensive investigation covering financial health, operational efficiency and legal standing, with valuation and debt structuring linked to the findings. A buyer may also investigate customers, suppliers, technology, regulatory exposure, taxes, litigation, management and cybersecurity.

The workstreams should reflect the actual risks of the business rather than a generic checklist.

Financial diligence tests the earnings base

Historical revenue and EBITDA are starting points. The buyer may examine revenue concentration, recurring versus non-recurring items, margin sustainability, cash conversion, working-capital needs, capex, debt-like liabilities and forecast assumptions.

These findings often feed directly into valuation and purchase-price mechanics.

Diligence can change the decision, not just the price

A 2026 SEC-filed announcement described a buyer terminating a non-binding acquisition LOI after audit-stage financial diligence showed a less favorable historical financial profile and higher expected capital needs.

That is a useful reminder: diligence is not successful only when a deal closes. Avoiding a poorly underwritten transaction can be the correct outcome.

Data-room access creates a process trail

Serious M&A processes commonly use virtual data rooms, management presentations, written Q&A and specialist reports. The buyer should track what was reviewed, which assumptions changed and which issues remain open.

That record becomes especially important when investment committees, lenders or insurers need to understand how material risks were evaluated.

Common mistakes

Treating diligence as confirmation The process should challenge the investment thesis, not merely support it.

Letting headline EBITDA dominate Cash conversion, working capital and recurring capex can materially change debt capacity and equity returns.

Assuming a clean audit replaces transaction diligence An audit and acquisition diligence serve different purposes and can focus on different risks.

Example

A sponsor values a target using $20 million of expected EBITDA. Financial diligence finds that $3 million came from a one-time contract and that customer churn has accelerated. Commercial diligence confirms weaker retention. The sponsor may reduce normalized EBITDA, lower its valuation, change leverage assumptions or abandon the transaction.

Good diligence separates facts from underwriting assumptions. The goal is not to eliminate uncertainty; it is to identify which uncertainties are material, quantify them where possible and decide whether they should change price, structure, financing, covenants or the decision to proceed.