What does operational due diligence actually cover?

Financial diligence tests the numbers. Commercial diligence tests the market. Operational diligence tests whether the business can deliver the plan, and where the cost base leaks. Here is what a proper one covers.

Most mid-market deals get financial diligence, legal diligence, and some form of commercial review as standard practice. Operational diligence is often lighter, scheduled late, or folded into a single management presentation near the end of the process. That's a mistake. The operating cost base is where the value creation plan actually succeeds or fails after close, and it's usually the least examined part of the deal.

The question it answers

Financial diligence asks whether the numbers are real. Commercial diligence asks whether the market will support the plan. Operational diligence asks a different question: can this business actually execute, and what is it spending money on that it doesn't need to be?

That second half of the question is where most of the recoverable value sits in a mid-market business, more often than people expect going in. Not headcount, usually. Contracts.

What a proper review covers

The vendor and contract base comes first: every material supplier agreement, its term, renewal mechanics, pricing structure, escalation clauses, and exit rights. In businesses that haven't been through a sponsor before, a meaningful share of these agreements were signed years ago and never revisited since, because nobody owned the job of revisiting them. That's addressable cost, and it belongs in the deal model, sized and risk-adjusted, not left as a footnote.

Technology spend is next: software licenses, cloud infrastructure, IT services. License counts get checked against actual headcount. Cloud commitments get checked against actual workloads. Support contracts get checked against what's genuinely in use versus what's still being paid for out of habit. This is usually where acquisitive businesses leak the most, because every prior acquisition brought its own stack in the door and nobody was ever tasked with consolidating them.

Marketing and agency effectiveness gets its own look: agency contracts, fee structures, media transparency, production costs. Marketing is frequently the largest genuinely discretionary budget in a mid-market business and, at the same time, the least commercially governed. In diligence, the question is simple to state and hard to answer without doing the work: is this spend buying growth, or is it buying activity that looks like growth in a board deck.

Procurement maturity matters more than most sponsors expect going in. Is there an actual function, a process, and a named owner, or does every department buy what it wants from whoever it's always bought from? The answer tells you how fast savings can realistically be captured after close, and how much of any improvement will actually stick once outside attention moves on to the next deal.

Revenue operations rounds it out: pipeline hygiene, forecast accuracy, CRM data quality, the handoff between sales and marketing. If the growth plan in the model depends on the sales engine performing, and the sales engine can't currently forecast itself with any real accuracy, the plan is carrying more risk than the model shows.

Management reporting is the last piece and often the most telling. How long does it take to close the month. How much of the board pack gets assembled by hand, in spreadsheets, by someone who would be doing something more valuable if the systems worked properly. Slow, manual reporting is a leading indicator, almost every time, of a business that will struggle to run a disciplined plan in the first hundred days.

What the output should look like

Not a report that sits in a data room and gets skimmed once. A set of deal model inputs: addressable savings by category, risk-adjusted, with a realistic timeline for capture. Alongside that, a draft plan for the first period after close, so day one is an actual start rather than the beginning of another planning exercise that eats into the window when execution matters most.

Done this way, operational diligence tends to pay for itself several times over before the deal even closes, because the findings change the price, change the structure, or change both.

When to run it

Earlier than most sponsors default to. The findings are most useful while price and structure are still genuinely open, not after they've been locked in around numbers that didn't account for what diligence would find. A focused review during exclusivity is usually enough for a mid-market business, provided the data room is reasonably complete going in. If it isn't, that itself is a data point worth taking seriously.