What is Operational Due Diligence?
Short answer: Operational due diligence evaluates the operating system behind the financial forecast. It identifies constraints, risks, required investment and practical improvement opportunities before a buyer commits.
Scope may cover facilities, capacity, procurement, inventory, fulfilment, quality, maintenance, people, health and safety, systems, resilience and business continuity. It differs from commercial diligence, which tests demand, and from financial diligence, which tests reported results and cash. The work should connect operational evidence to the investment thesis. For example, a growth forecast is not credible if the bottleneck process lacks capacity and the required expansion is absent from capex. Corporate buyers also assess how the target's operations fit their standards. Private-investment teams assess whether management can execute changes within the expected holding period.
How it works
The team maps critical value streams, reviews key performance indicators and source definitions, visits material sites where appropriate, interviews process owners and tests capacity, yield, service, supplier and workforce assumptions. Each gap is translated into timing, cost, owner and effect on continuity. Day-one issues are separated from longer-term value creation. Common mistakes include relying on plant-level averages that hide bottlenecks, assuming theoretical capacity is usable capacity, treating a site visit as a safety audit, overlooking dependency on undocumented employee knowledge and recording savings without implementation cost or labour constraints.
Illustrative practical capacity = theoretical capacity x scheduled availability x achievable performance x quality yield
Example
A target forecasts 25 percent volume growth. Its main line has theoretical output of 1,000 units per week, scheduled availability of 90 percent, demonstrated performance of 85 percent and quality yield of 96 percent. Practical output is 1,000 x 0.90 x 0.85 x 0.96 = 734 units. Current good output is 700, leaving only about 5 percent headroom rather than the 30 percent claimed from nameplate capacity. The buyer adds a second shift and maintenance investment to the plan, tests labour availability and runs a downside case in which the expansion starts three months late.
Why it matters
Boards use operational diligence to see whether the acquisition plan can be executed without damaging customers, employees or compliance. Corporate buyers use it to plan integration standards and supply continuity. Private-investment teams use it to cost the value-creation plan, assess management capability and protect downside liquidity. Sellers can address obvious constraints before market or disclose them with a funded plan. The findings should flow directly into valuation, capex, covenants, integration and post-close accountability.
A transaction review is not a substitute for statutory safety, environmental, engineering, product-quality or employment assessments. Site access may be limited and operational data may use inconsistent definitions. Consultation, licensing, permits, collective bargaining and environmental approvals can constrain changes. Specialists should evaluate technical risks and local counsel should confirm regulatory or workforce steps. Buyers should not direct target operations before completion in ways that create control or competition-law concerns.