47 Questions to Ask Before Buying a Business: The Buyer’s Pre-LOI Diligence Checklist

The deals that close cleanly start with disciplined pre-LOI questions. Buyers who write LOIs based on a teaser and a 30-minute management meeting almost always discover problems in diligence. Those problems lead to re-trades (lower price), busted deals, or post-close regret. The fix is asking the right questions before you commit to exclusivity.

Pre-LOI questions screen for deal-breakers; diligence questions verify what was said. These two stages serve different purposes. Pre-LOI is about deciding whether the deal is worth pursuing at all — whether the business is what the seller claims, whether the price is in the right range, and whether the seller is ready to actually transact. Diligence comes later and goes deeper.

The 47 questions in this guide are organized by category. Financial questions establish whether the cash flow is real. Customer questions establish whether revenue is durable. Operational questions establish whether the business runs without the owner. Legal questions surface lawsuits and compliance issues. Strategic questions test growth potential. Seller motivation questions reveal whether the deal will actually close.

Most buyers skip half these questions and pay for it later. Independent sponsors and first-time search funders are especially prone to under-questioning. Experienced PE buyers and serial acquirers ask every question on this list (and more) before they spend $50k on diligence. Use this list before you sign anything binding.

“Every question you don’t ask before signing the LOI becomes a surprise during diligence. Surprises during diligence are how deals die or re-trade.”

Key Takeaways

• Pre-LOI questions screen for deal-breakers. They surface issues early, before you commit to 60-90 days of exclusivity and $50k+ in diligence costs.
• Six categories must be covered: financial health, customer concentration and retention, operations and team, legal and compliance, strategic position, and seller motivation.
• Seller motivation is the single most predictive variable. A seller retiring closes; a seller fleeing a declining business rarely does.
• Customer concentration over 20% in a single account materially changes valuation and deal structure. Ask early.
• Owner dependence is the most common post-close surprise. If the owner is the salesperson, the rainmaker, and the technical lead, the business will struggle without them.
• Print the 47-question list and bring it to every management meeting. The discipline of asking each question is what separates buyers who close from buyers who write LOIs and walk away.

Why pre-LOI questions matter more than diligence questions

An LOI commits you to 60-90 days of exclusivity. During that period, you stop looking at other deals, you spend money on diligence (legal, accounting, environmental), and you lose deal momentum if you walk. The LOI is the most expensive document in the buyer’s process to sign casually.

Pre-LOI questions are screens; diligence questions are confirmations. Before signing the LOI, you’re deciding whether the deal is worth pursuing. After the LOI, you’re verifying that what the seller said is true. The questions in this guide belong to the first category. They tell you whether to write an LOI at all and at what price.

Most failed deals were predictable from the first meeting. A buyer who walks at week 8 of diligence usually walks because of something the seller mentioned (or evaded) in the first meeting. The buyer didn’t hear it because they didn’t ask the right questions. This guide is the remedy.

These questions also test the seller’s readiness to transact. A seller who can’t answer basic financial questions, who hasn’t organized their books, who has unrealistic price expectations, or who hesitates on motivation usually isn’t ready. Asking the questions is half about the business and half about the seller.

Category 1: Financial questions (12 to ask)

Financial questions establish whether the cash flow is real. Most lower-middle-market businesses have messy financials — commingled personal expenses, inconsistent revenue recognition, unaudited statements. Your job pre-LOI is to figure out what ‘real’ EBITDA or SDE is, not just what the CIM claims.

Three years of financials minimum, ideally five. You need trailing 12 months for the most recent picture and 3-5 years for trend analysis. Quarterly or monthly cuts are better than annual when available. Tax returns matter as a sanity check on internal financials.

Add-backs should be specific and defensible. If the seller claims $400k of add-backs, each one needs an invoice or document trail. ‘Owner discretionary expenses’ is not an add-back; specific items like ‘owner’s wife’s salary, $80k, no work performed’ are.

Working capital trends matter as much as EBITDA. A business with growing receivables and shrinking payables can show flat EBITDA while burning cash. Ask for a working capital schedule by month for the trailing 24 months.

Category 2: Customer questions (8 to ask)

Customer concentration is the single most overlooked risk. A business with 30% of revenue from one customer is a different business from one with no customer over 5%. The first one needs a discount; the second commands a premium.

Contract structure determines whether revenue is recurring. Recurring contractual revenue (multi-year MSAs with auto-renew) is worth materially more than project-based or transactional revenue. Ask to see the contracts, not just the revenue numbers.

Customer relationships often live with the owner. Especially in services businesses, the seller may personally hold the relationship with top customers. If the owner leaves, those customers may follow. Ask who in the business each top customer talks to.

Lost customers tell you more than retained ones. Ask for a list of customers who’ve left in the last 24 months and why. Patterns matter. If the top reason is ‘price,’ you have a competitive issue. If it’s ‘service,’ you have an operational issue.

Category 3: Operational questions (8 to ask)

Owner dependence is the post-close surprise that kills value. If the owner is the top salesperson, the technical expert, and the relationship holder, the business is really a job. Buyers who don’t test owner dependence pre-LOI overpay and underperform.

Key employees are often more valuable than the owner. A second-in-command who runs day-to-day operations, a sales manager with the customer book, or a technical lead with the IP can be the difference between a transferable business and a non-transferable one.

Systems and SOPs determine whether the business scales. A business that runs on the owner’s memory is hard to grow. A business with documented processes, a real ERP, and trained backups is much easier. Ask to see the operations manual.

Supplier concentration mirrors customer concentration. A single supplier providing 40% of inputs is a vulnerability. Ask the same questions about suppliers that you asked about customers.

Category 4: Legal and compliance questions (6 to ask)

Litigation history surfaces patterns. One lawsuit in 10 years is normal. Three in 3 years is a pattern. Ask about every litigation matter, including settled ones, and what triggered them. Customer suits, employee suits, and regulatory actions all matter.

Licensing and permits can be deal-breakers. In regulated industries (HVAC, healthcare, food service, environmental), the licenses may not transfer with the business. The buyer may need to qualify independently or wait for state approval, which can delay or kill the deal.

Intellectual property ownership is rarely as clean as sellers claim. Software, trademarks, and trade secrets often have weak chain of title — especially if employees or contractors created them. Ask for IP assignments in writing for all material IP.

Environmental liabilities outlive the deal. If the business has any environmental footprint (manufacturing, dry cleaning, automotive, agriculture), CERCLA liability can attach to the buyer. Phase I and Phase II environmental assessments are non-negotiable.

Category 5: Strategic questions (7 to ask)

Market position determines pricing power. A #1 player in a niche can raise prices. A #4 player in a commoditized market cannot. Ask the seller to honestly describe competitive position, then verify against your own market research.

Growth opportunities should be specific, not theoretical. ‘We could expand to other states’ is theoretical. ‘We’ve been turning down work in Atlanta for two years because we don’t have capacity’ is specific. The second one is real growth; the first is a pipe dream.

Industry trends matter more than company-specific factors. A great company in a declining industry is harder to grow than a mediocre company in a growing one. Ask the seller about industry growth, regulatory changes, technology shifts, and competitive dynamics.

Capex requirements forward are different from historical capex. Sellers under-invest in the years before sale. Ask what capex the next owner will need to invest to maintain or grow the business. Equipment replacement, technology upgrades, and facility improvements all matter.

Category 6: Seller motivation questions (6 to ask)

Why are you selling? Ask this question first, last, and in the middle of every meeting. Listen for inconsistencies. A seller retiring for health usually has a clear story. A seller fleeing a declining business often has shifting reasons.

Who else have you talked to? Sellers who’ve been on the market for 18 months without a deal usually have a problem — price expectations, business issues, or seller readiness. Sellers who just hired an advisor and are running a clean process are more likely to close.

What do you want to do next? A seller who plans to retire to the lake closes more reliably than one who plans to start a competing business. The latter raises non-compete issues and signals possible regret post-close.

What’s your minimum acceptable price? Most sellers won’t answer directly, but the response (silence, deflection, a number, an evasion) tells you about expectations. If the implied minimum is 50% above your range, walk before writing the LOI.

How to use the 47-question list in practice

First meeting: cover seller motivation and high-level financials. Spend the first 60-minute management meeting on category 6 (motivation), the headline numbers from category 1 (financials), and a few key questions from category 2 (customer concentration). Don’t try to ask all 47 in the first meeting.

Second meeting: drill into operations and customers. Once seller motivation and financials look acceptable, spend the second meeting on owner dependence, key employees, customer relationships, and any red flags from the first meeting. This is also when you ask for the data room access.

Third meeting (or pre-LOI session): legal, strategic, and gaps. Cover the legal questions, the strategic positioning, and any gaps from previous meetings. This is also when you talk through expected price range and deal structure to make sure both sides are aligned before LOI.

After three meetings, you should know whether to write the LOI. If you can answer all 47 questions with reasonable confidence, you have enough to write a defensible LOI. If you have major gaps in 5+ questions, you need a fourth meeting or you should walk.

Red flags that should stop the LOI

Customer concentration over 30% in a single customer. Possible to deal with through structure (earnouts, escrow), but materially changes valuation. Don’t write an LOI at the seller’s asking price if you discover this late — reset expectations first.

Seller can’t articulate why they’re selling. Confused, shifting, or evasive answers about motivation almost always mean the deal won’t close. Walk before you spend $50k on diligence.

Financial books are not on accrual basis (or are barely on cash basis). Cash-basis books with no accrual adjustment make EBITDA meaningless. The QoE provider will need months to reconstruct accrual financials. Either delay the LOI or factor the work into your timeline.

Owner can’t take a 2-week vacation without daily calls. If the owner can’t step away, the business is owner-dependent. Plan a longer transition (6-12 months minimum), structure earnouts tied to the owner staying, or walk.

Conclusion

Buyers who ask all 47 questions before signing the LOI write better deals and avoid the post-close surprises that haunt undisciplined acquirers. Skipping pre-LOI questions doesn’t save time — it shifts the work into diligence, where surprises become deal-killers or re-trades. The financial questions reveal the real cash flow. The customer questions reveal whether revenue is durable. The operational questions reveal whether the business runs without the owner. The legal questions surface litigation and compliance issues that derail closings. The strategic questions test growth potential. The seller motivation questions reveal whether the deal will actually close. Print this list, bring it to every management meeting, and don’t sign an LOI until you can answer all 47 questions with confidence.

Frequently Asked Questions

What’s the difference between pre-LOI questions and due diligence questions?

Pre-LOI questions screen for deal-breakers. They tell you whether the deal is worth pursuing at all, at what price, and on what structure. Due diligence questions verify what the seller said. Pre-LOI is fast and high-level; diligence is slow and exhaustive. Skipping pre-LOI questions means you commit to exclusivity and spend $50k+ on diligence before discovering the deal won’t work.

How many meetings should I have before signing an LOI?

Two to four management meetings, plus data room access. The first covers motivation and high-level financials. The second covers operations and customers. The third covers legal, strategic, and price alignment. A fourth is sometimes needed if gaps remain. Buyers who write LOIs after one meeting almost always re-trade or walk during diligence.

What’s the most important pre-LOI question to ask?

‘Why are you selling now?’ The answer (and how it changes across meetings) is the single most predictive variable for whether the deal closes. Sellers retiring for health, retirement, or family reasons close reliably. Sellers selling because the business is declining, because they’re burned out, or because of a partnership dispute close less reliably. Ask the question multiple times in different ways.

Should I do a Phase I environmental assessment before LOI?

Usually after LOI, but pre-LOI you should ask whether there are any known environmental issues. If the business has any manufacturing, automotive, dry cleaning, agricultural, or chemical exposure, you should plan for Phase I as a condition of close. Pre-LOI, ask the seller directly: ‘Have you ever had an environmental issue, contamination, or notice of violation?’

How do I test owner dependence pre-LOI?

Three questions: (1) walk me through a typical week in your role; (2) who runs the business when you’re on a 2-week vacation; (3) what decisions does the team make without consulting you? If the owner makes every meaningful decision, holds every key customer relationship, and is the technical expert, the business is owner-dependent. Plan for a longer transition or walk.

What customer concentration is acceptable?

Under 10% in any single customer is ideal. 10-20% is manageable. 20-30% requires deal structure (earnouts, escrow holdbacks, customer-specific reps). Over 30% materially changes valuation and may be a deal-breaker depending on contract terms and customer relationships. Ask early; it’s a screening question, not a diligence-stage discovery.

Should I ask the seller about their minimum price pre-LOI?

Yes, indirectly. Direct ‘what’s your minimum?’ rarely gets a clean answer, but you can ask ‘what would you walk away from?’ or ‘is there a number that doesn’t make sense for you?’ The response (silence, deflection, a number, an evasion) tells you about expectations. If the implied minimum is 50% above your range, save the LOI work and walk.

How do I know if the seller’s books are good enough to LOI?

Ask for 5 years of internal financials and tax returns. Internal financials should reconcile to tax returns within reasonable tolerance. They should be on accrual basis or convertible to accrual. Add-backs should be specific and documented. If the seller can’t produce reconciled books, expect 2-3 months of QoE reconstruction work and price the deal accordingly.

What if the seller refuses to answer some of the 47 questions?

Refusal is information. A seller who won’t share customer concentration, employee compensation, or litigation history is either hiding something or not ready to transact. You can either walk or proceed with much more skepticism. Don’t rationalize the refusal — sellers ready to close answer the questions, even if some answers are uncomfortable.

Should I bring my advisor to pre-LOI meetings?

Often yes, especially for first-time buyers. An experienced M&A advisor or buy-side advisor catches answers and inconsistencies that buyers miss. They also signal seriousness to the seller. The cost (typically $5k-$15k for pre-LOI support) is far less than the cost of writing a bad LOI.

How long should pre-LOI take?

2-6 weeks from first meeting to LOI. Faster is possible if the seller is motivated and the deal is simple. Longer suggests gaps in information or seller hesitation. If pre-LOI drags past 8 weeks without an LOI, the deal usually doesn’t close — either the seller isn’t ready or the buyer keeps finding new issues.

Can I use this list for an SBA-financed acquisition?

Yes — the questions are the same regardless of financing. SBA-financed deals add some specific questions about lender requirements, seller financing, and transition period (the SBA usually requires the seller to stay on for some period). Use the 47 questions as your foundation and layer SBA-specific items on top.

About the Author

Christoph Totter is the founder of CT Acquisitions, a buy-side deal origination firm headquartered in Sheridan, Wyoming. CT Acquisitions sources founder-led businesses for 75+ private equity firms, family offices, and search funds across the U.S. lower middle market ($1M–$25M EBITDA). Christoph writes about M&A from the perspective of someone on the phone with both sides of the deal table every week. Connect on LinkedIn · Get in touch