Buying an existing, profitable small business — rather than starting one from scratch — gets pitched online as a shortcut: skip the years of trial and error, buy the cash flow directly. We spent four months seriously evaluating one such business. We ultimately didn’t buy it, and the process taught us more about what “due diligence” actually means than any article on the topic had.

What the Listing Said vs What the Numbers Showed

The business looked strong on the summary the broker provided: steady revenue, a stated profit margin, a “hands-off” operating model. Once we asked for the underlying financials — not the summary, the actual statements — a few things became clear that hadn’t been obvious from the pitch. A meaningful share of “profit” was the owner’s own labour, unpaid and unaccounted for. Replace that labour with a market-rate hire, and the margin the listing advertised looked very different.

The Questions That Mattered Most

Beyond the financials, the questions that ended up shaping our decision were mostly about concentration risk and transferability:

  • How much revenue comes from the top one or two customers, and what happens to those relationships the moment ownership changes?
  • How much of the “operation” lives in the current owner’s head — supplier relationships, informal processes, institutional knowledge — versus in documented, transferable systems?
  • What does the business actually look like without the current owner’s personal reputation or network attached to it?

Why We Walked Away

The specific business we evaluated had real customer concentration risk (a large share of revenue tied to a handful of relationships that were personal to the current owner) combined with a valuation that assumed those relationships would transfer cleanly. That combination was the deciding factor — not the industry, not the stated profit margin, and not the asking price in isolation.

What This Process Is Useful For, Even Without Buying Anything

Even having not completed a purchase, the exercise of underwriting a real business — reading its actual financials, stress-testing its assumptions, pricing in the risks a listing won’t volunteer — was valuable on its own. It’s a skill that transfers to evaluating any income-generating asset, not just full business acquisitions.

This account describes one specific, hypothetical-in-outcome evaluation and is shared for illustration, not as a recommendation to pursue (or avoid) small business acquisitions generally. The right call depends entirely on the specific business and your own risk tolerance and operating capacity.