This post walks through the specific questions to ask when buying a business — about the numbers, day-to-day operations, why the owner is really selling, and the transition — and how to read the answers you get, not just collect them.

A due diligence checklist tells you which documents to collect. It doesn't tell you what to actually ask the seller when you're sitting across from them. The right questions, and paying attention to how they're answered rather than just what's said, often reveal more than the financials alone. The U.S. Small Business Administration's own guidance on buying an existing business makes the same point: understanding why a business is for sale and getting comfortable with the seller's answers is a formal part of due diligence, not an informal add-on.

What Should You Ask About the Numbers?

  • "Walk me through every add-back in your SDE calculation." A seller who can explain each one clearly, with documentation, is very different from one who gets vague.
  • "Has revenue or margin changed meaningfully in the last two years, and why?" A specific, verifiable answer is a good sign; a vague one isn't.
  • "What percentage of revenue comes from your top three customers?" This tells you about concentration risk before you're deep into due diligence.

What Should You Ask About Day-to-Day Operations?

  • "What would break if you disappeared for a month?" The honest answer tells you how owner-dependent the business really is.
  • "Which employees are critical to keeping this running, and do they know you're selling?"
  • "What do you spend most of your own time on?" This surfaces work that isn't obvious from the financials but that you'd be signing up for.

What Should You Ask About Why They're Selling?

Ask directly, and ask again a different way later in the conversation — "why are you selling" is the single most predictable question a seller has already rehearsed an answer to, so a second, more specific version ("what would you have done differently if you weren't selling") sometimes gets a more honest response. Retirement, burnout, and partnership disputes are common and legitimate; a rehearsed-sounding answer that changes slightly each time you ask is worth noticing. If you're working with a broker, they can also ask some of these questions on your behalf — see our guide to questions to ask a broker when buying a business for how to use that relationship well.

What Should You Ask About the Transition?

  • "How long are you willing to stay on after closing, and in what capacity?"
  • "Will you introduce me personally to key customers and vendors?"
  • "What's the one thing you wish someone had told you when you bought or started this business?" Not every seller will answer this well, but the ones who do often hand you real, practical insight for free.

How Should You Use the Answers?

Write them down and compare them against what the financials and documents actually show later in due diligence — inconsistencies between what a seller says early on and what the paperwork confirms are worth more scrutiny than either piece of information alone. A confident, consistent seller who welcomes tough questions is a good sign; one who gets defensive or vague under routine questioning is telling you something too.

For the fuller list of documents to request alongside these conversations, see our due diligence checklist, and for warning signs to watch for in the answers themselves, see red flags when buying a business. If you're evaluating a specific business and want a second, experienced perspective on what to ask, get in touch with Silver Surf.

FAQ

1. How many questions should I ask before making an offer?

There's no fixed number — the goal is covering financials, operations, and the seller's reasons for selling thoroughly enough that nothing major surprises you in due diligence, typically 15 to 20 questions across a few conversations.

2. Should I ask these questions before or after signing a letter of intent?

Ask the broad ones before an LOI to confirm the business is worth pursuing seriously; save the most detailed financial and operational questions for after, once you're in a formal due diligence period with document access.

3. What if the seller won't answer a question directly?

Note it and revisit later — a seller who avoids one question isn't necessarily hiding something, but a pattern of avoidance across multiple questions is a real signal to slow down.

4. Should I ask these questions myself or let my broker ask them?

Both — a broker can ask pointed questions more comfortably than you might want to as the buyer, but hearing the seller answer key questions directly, in person, still matters for building your own read on them.