October 19, 2026

How a Buyer Actually Sizes up Your Business

By Christopher Riegg

Close-up of a person analyzing financial charts and taking notes in an office setting.
Photo by Pavel Danilyuk on Pexels

The Part Owners Never See

Most owners picture due diligence as a pile of spreadsheets and a lawyer asking hard questions. That happens, eventually. But the real sizing up starts much earlier, before a buyer ever picks up the phone, and it rarely looks like what people expect. After 35 years sitting on both sides of this process, I can tell you the mechanics are less dramatic than the stories owners tell themselves, and more thorough than they expect.

Here is what actually happens, roughly in order.

What Gets Read First

Before anyone talks valuation, a buyer or lender reads trends, not totals. They want three years of financials, sometimes five, and they are looking at the shape of the lines more than the size of the numbers. Revenue that climbs steadily is read differently than revenue that spikes off one large customer or one good year. Margins that hold steady through a slow stretch tell a buyer something that a single strong quarter never will.

The second thing they read is customer concentration. If twenty percent of revenue sits with one account, that gets flagged on page one of their notes. It does not kill a deal by itself, but it changes how the deal gets structured, and it almost always changes the price.

The third thing, and the one owners underestimate most, is how dependent the business is on the owner personally. Buyers ask versions of the same question a dozen different ways: what happens here if you take two months off. The answer shows up in whether there is a second layer of management, whether customer relationships run through more than one person, and whether the systems in the business live in someone's head or in documents other people can use.

Why the Early Numbers Rarely Match the Final Ones

Owners are often surprised that the number discussed in an early conversation moves by the time an offer is in writing. This is not a negotiating tactic, most of the time. It is what happens when assumptions meet actual data.

A buyer's first estimate is built on what you tell them and what is typical for a business your size in your industry. The number that survives due diligence is built on what the financials actually show once someone has gone through the detail: add backs that do not hold up, working capital that runs tighter than described, a lease that is less favorable than it looked. None of this means the first number was dishonest. It means early numbers are built on incomplete information, and later numbers are not.

This is the part of the process that frustrates owners the most, because it can feel like the ground shifting under them. I tell clients to expect it rather than be caught off guard by it. The way to protect against an unpleasant surprise is to know your own numbers cold before anyone else starts asking about them.

What Slows Deals Down, Usually

Most delays in a transaction do not come from disagreement over price. They come from information moving slower than expected. A buyer's team asks for a document, it takes two weeks to pull together because nobody kept it in one place, and the whole process stalls while everyone waits. Multiply that across dozens of requests and a deal that should take four months stretches to eight.

The businesses that move through this fastest are not necessarily the biggest or the cleanest on paper. They are the ones where someone can produce what is asked for within a few days, because the information already exists in an organized form. That is less about accounting sophistication and more about habit. Owners who review their numbers regularly, who keep contracts and agreements filed in a way someone else could find them, move through this process in a fraction of the time.

What I Tell Owners Who Are Not Selling Yet

You do not have to be planning a transaction to benefit from thinking like this. Run your business for a few years as though someone might read the file closely at any point. Know what percentage of revenue sits with your top customers. Know which parts of the business would stall without you specifically. Keep the paperwork in a state where a stranger could make sense of it without you in the room.

None of this changes how you run the business day to day. What it does is remove the scramble when an opportunity, planned or unplanned, actually shows up. The owners who handle this best are not the ones with the most impressive numbers. They are the ones who already know their own story before someone else starts asking.

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