12 Things to Consider When Buying a Business: A Buyer’s Pre-Offer Checklist

Buying a business is the largest single capital decision most operators ever make. Larger than buying a house. Larger than funding college. Larger, often, than every prior investment combined. And unlike public equities or real estate, the asset you’re buying is alive — it has employees who can quit, customers who can leave, and a seller whose departure can hollow the business out within months.

Most buyers focus on the wrong things in the wrong order. They obsess over EBITDA multiples and seller financing terms before they understand whether the business is fundamentally durable. They negotiate working capital pegs before they verify customer concentration. They run quality of earnings before they ask whether the seller is the business. The result: acquisitions that look great on a spreadsheet and fall apart in operation.

This guide walks through the 12 things every buyer should evaluate before signing an LOI. Not after — before. The LOI gives the seller exclusivity and momentum. Once you’ve signed it, your leverage to walk away or reprice drops every week. The work below should happen during the courtship phase: management meetings, CIM review, early data room access, and your own outside-in research.

The order matters. Financial health and customer concentration come first because they are the structural questions. If those fail, nothing else matters. Owner dependency and employee retention come next because they determine whether the business survives the transition. Growth, market, technology, and lease come after — they shape the upside case but rarely kill the deal on their own. Financing and transition planning come last because they’re your problems to solve, not the seller’s.

“You are not buying revenue. You are buying the durability of revenue. The two are very different things — and the gap between them is where every bad acquisition lives.”

Key Takeaways

• Run the 12 considerations as a sequenced checklist — structural risks (financials, concentration, owner dependency) before stylistic ones (technology, lease, growth).
• Owner dependency is the most under-priced risk in deals under $10M. Test it by asking what happens to revenue if the seller disappears tomorrow.
• Customer concentration above 20% from one customer is a yellow flag; above 35% is a structural reprice or walk-away.
• Employee retention risk is highest when the seller’s key managers are unsigned. Get retention agreements in place before close.
• Supplier concentration mirrors customer concentration. A single supplier providing 30%+ of inputs is leverage you don’t control.
• Most failed acquisitions fail in months 1-12 post-close due to weak transition planning — not due to anything diligence missed.

1. Financial health: are the numbers real?

Start with three years of financial statements and a trailing-twelve-month P&L. Audited statements are best. Reviewed statements are acceptable for smaller deals. Compiled statements are a flag — they mean the accountant did not test anything, just typed up what management gave them. For deals over $2-3M of EBITDA, expect to commission your own Quality of Earnings (QoE) study before close.

Reconstruct EBITDA from the bottom up. Start with reported net income. Add back interest, taxes, depreciation, amortization. Then evaluate add-backs: owner’s compensation above market, personal expenses run through the business, one-time legal fees, non-recurring revenue. Sellers will present an ‘Adjusted EBITDA’ with aggressive add-backs. Your job is to test each one and reject the ones that aren’t real.

Look at gross margin trends over 36 months, not just totals. A business with 42% gross margin three years ago, 38% two years ago, and 34% last year is showing margin compression — either input costs rising, pricing power declining, or product mix shifting. The reported EBITDA may look fine; the trajectory does not. Gross margin trends are leading indicators that EBITDA hasn’t caught up to yet.

Working capital tells you what the business actually needs to operate. Calculate average accounts receivable days, accounts payable days, and inventory days over 24 months. The net working capital (AR + inventory − AP) is the cash trapped in operations. The buyer assumes a ‘peg’ of working capital at close — if the business needs $800k of working capital to run normally and the seller leaves only $400k, the buyer eats the $400k gap on day one.

2. Customer base concentration: where does the revenue come from?

Pull a customer list ranked by revenue for the last 24 months. Calculate top 1, top 5, and top 10 customer concentration as percentage of total revenue. A diversified business has top customer under 10% and top 5 under 35%. A concentrated business has top customer over 20% and top 5 over 60%. Concentration is not automatically disqualifying — but it determines how you price, structure, and de-risk the deal.

Concentration risk has three dimensions: size, contract, and switching cost. A single customer at 30% with a 5-year take-or-pay contract is different from a single customer at 30% on month-to-month terms. The first is a bond; the second is a call option to leave. Ask for written contracts on every top-10 customer and read the termination clauses. Customer concentration on at-will terms is the worst combination.

Customer relationships often run through the seller personally. In small businesses, top customers are often there because they trust the owner — not because they have a structural reason to use the company. When the owner leaves, those customers reconsider. Test this by asking the seller: ‘Of your top 10 customers, how many would still be customers if you weren’t answering the phone?’ The honest answer often surprises buyers.

Mitigate concentration with deal structure, not optimism. If the top customer represents 25% of revenue and is at risk in transition, structure an earn-out tied to that customer’s retention. Or hold back 10-15% of purchase price for 12-18 months pending continued customer activity. Or reduce the headline price by the discounted value of that customer revenue. Don’t close at full price hoping the customer stays — price the risk into the deal.

3. Owner dependency: is the seller the business?

Owner dependency is the single largest under-priced risk in small business acquisitions. If the seller personally holds the customer relationships, vendor relationships, technical knowledge, and decision authority, the value of the business does not transfer with the asset purchase. You buy the assets; the value walks out the door.

Three diagnostic questions reveal owner dependency: (1) When was the last time the seller took two consecutive weeks of vacation? (2) Who signs off on customer pricing decisions over $X? (3) Who do top customers call when something goes wrong? If the answers are ‘never,’ ‘the owner,’ and ‘the owner’ — you have a high-dependency business and should reprice or restructure.

Test the org chart against the work that gets done. Ask for an org chart and then ask, for each department, who actually performs the function. In owner-dependent businesses, the org chart shows a CFO, COO, and Sales Manager — but the seller is doing all three jobs in practice. The org chart is aspirational. The reality is that the seller is the company.

Mitigate owner dependency with structured transition. Require the seller to stay 6-24 months post-close as a paid consultant or employee. Tie part of the purchase price to a successful transition (earn-out or retention bonus to the seller for hitting customer-retention or revenue targets). For high-dependency businesses, consider a longer deferred-purchase structure that keeps the seller economically aligned for 24-36 months.

4. Growth potential: is the business at peak or at trough?

Sellers typically sell at peak performance. The trailing 12 months are often the best 12 months of the business’s history. The seller has been preparing for sale for 1-3 years — trimming costs, deferring capex, pulling forward revenue. Your job as buyer is to figure out whether the trailing performance is sustainable or pulled-forward.

Look for deferred investment. Capex as a percentage of revenue should be steady or growing. If it has dropped meaningfully in the year or two before sale, the seller has been harvesting maintenance to inflate EBITDA. Ask for a maintenance capex budget for the next 24 months and reconcile it to historical spend. The gap is real cash you’ll fund post-close.

Identify the growth levers that haven’t been pulled. Sales and marketing investment, geographic expansion, adjacent product lines, pricing power, channel partnerships. The best acquisitions have obvious growth levers the seller hasn’t pulled because they were already making enough money. The worst acquisitions look like they’ve already pulled every lever — meaning your post-close upside requires you to find growth no one else has found.

Underwrite to base case, not upside case. Bankers and brokers will pitch the upside case — what the business could be in 5 years with a great operator. The deal economics need to work on the base case — the business performing at trailing twelve-month levels with no growth and modest cost increases. If the deal only pencils on the upside, you’re overpaying.

5. Market and industry trends: tailwind or headwind?

The business inherits the trajectory of its industry. A great operator in a declining industry produces declining results. A mediocre operator in a growing industry produces growing results. Most buyers underweight industry direction because the business’s own numbers look fine — but those numbers reflect the past, while the industry trend predicts the future.

Identify the structural drivers of demand for this business’s services. Demographics. Regulation. Technology displacement. Customer behavior shifts. Each driver works for or against the business over a 5-10 year horizon. A residential plumbing business benefits from aging housing stock. A traditional print shop fights a 20-year demand decline. The same EBITDA multiple is a steal in one business and an overpay in the other.

Look for technology disruption risk. Is there a software product or platform shift that could replace what this business does? Is there a younger competitor using a different model that’s growing faster? Has Amazon, Google, or a big-tech entrant moved into adjacent territory? You don’t need to predict the disruption — you need to know whether it exists, so you can price the risk.

Read trade publications and talk to peers, not just the seller. The seller’s view of the industry is the most biased view available. Spend time with 3-5 industry insiders — competitors, suppliers, customers, trade associations. They’ll tell you whether the business is in a growing pond or a shrinking one. This research costs time, not money, and it changes the price you should pay.

6. Employee retention: who stays, who leaves, who matters?

Identify the key employees before signing the LOI. In every business there are 3-7 people whose departure would meaningfully damage operations: the lead estimator, the senior tech, the office manager who runs scheduling, the rainmaker salesperson. Get a list. Understand each person’s tenure, role, and replaceability. Ask what they’re paid relative to market.

Employee retention agreements should be in place before close. For each of the top 3-5 employees, you want either a stay bonus (paid 6-18 months post-close conditional on retention), a retention agreement (compensation continues at current levels for a defined period), or an upgraded comp package (raise + bonus + equity-equivalent). The cost of these agreements is modest. The cost of losing a key employee in month 4 is enormous.

Watch for non-compete weakness. If the seller’s top employees can leave and immediately compete (no non-compete, weak non-compete, unenforceable non-compete in their state), the risk is much higher. California, North Dakota, and Oklahoma broadly do not enforce employee non-competes. In those states, retention bonuses and culture matter much more than legal restrictions.

Check for hidden HR liabilities. Open workers’ compensation claims. Pending discrimination or harassment complaints. Misclassification of contractors as employees. Unpaid overtime exposure. Ask for the last 5 years of EEOC filings, DOL audits, and workers’ comp incident reports. Each one is a contingent liability that should reduce the price or be indemnified separately.

7. Supplier and vendor relationships: who has the leverage?

Supplier concentration mirrors customer concentration. If a single supplier provides 30%+ of the inputs the business needs to operate, that supplier has structural pricing leverage. They can raise prices, change terms, or refuse to renew. Pull a vendor list ranked by spend over the last 24 months. Top supplier under 15% is healthy; over 30% is structural risk.

Look for relationship-based supplier pricing. Many small businesses have favorable supplier terms because of personal relationships the owner built over decades. Net-60 instead of net-30. 5% discount the competitor doesn’t get. Priority allocation when supply is tight. Those terms often don’t transfer to a new owner. Ask each top supplier whether terms continue under new ownership and get it in writing.

Understand the supply chain’s vulnerability. How long are lead times? What inventory does the business carry vs. order on-demand? What happens if a top supplier goes out of business or has a fire? Supply chain disruption is harder to model than customer disruption but can be just as fatal — especially in industries where alternative suppliers don’t exist or take 12+ months to qualify.

Check vendor contracts for change-of-control clauses. Many supplier contracts have a clause that allows the supplier to terminate, renegotiate, or accelerate on a change of ownership. If the deal structure is a stock sale, change-of-control clauses are usually triggered. If it’s an asset sale, contracts need to be assigned and re-negotiated. Either way, top-supplier consent should be a closing condition.

8. Legal and litigation: what’s in the file cabinet?

Request a legal disclosure schedule covering 5-10 years. Pending litigation. Threatened litigation. Settled litigation. Regulatory actions. Customer complaints that escalated. Employment disputes. IP infringement claims. The pattern matters as much as any single case — a business that has been sued 12 times in 5 years has a problem that one-off settlements don’t fix.

Look for product liability exposure. If the business sells products, is there exposure for defects, recalls, or injury claims? Product liability follows the assets in many states even after asset sales. You may inherit lawsuits for products sold years before close. Ask for the product liability insurance history, claims history, and any open recalls.

Check intellectual property ownership. Trademarks, patents, copyrights, software code, customer lists. Verify the company actually owns the IP — not the seller personally, not a contractor who never assigned rights, not a former employee whose work was never properly transferred. IP ownership defects are common in small businesses and expensive to fix post-close.

Verify regulatory licenses and permits transfer. Many businesses operate under state or federal licenses that don’t automatically transfer in an asset sale: contractor licenses, healthcare licenses, transportation authority, FCC licenses, environmental permits. Identify every license, confirm transfer requirements, and build the license transition into the closing checklist. Operating without the license post-close is illegal and uninsurable.

9. Technology infrastructure: is the stack a strength or a debt?

Audit the core systems that run the business. ERP, CRM, accounting, scheduling, e-commerce, communications. Are they current? Supported? Backed up? Documented? Many small businesses run on outdated systems patched together over decades. Replacing them post-close is a 12-24 month, $500k-$2M project that buyers often don’t budget for.

Identify single points of failure. One person who knows the legacy system. One server in a closet without redundancy. One software vendor that’s out of business. Custom code written by a contractor who left in 2014. Each is a ticking risk that could cost weeks of operations if it fails. List them, price the remediation, factor it into the deal.

Evaluate cybersecurity posture. Has the business been breached in the last 5 years? Do they have multi-factor authentication on email, accounting, and admin systems? Endpoint detection? Backups tested for restore? Cyber insurance? Cybersecurity gaps are a hidden liability — ransomware in month 3 of ownership is a deal-breaker for many buyers’ financing covenants.

Watch for software license non-compliance. Many small businesses use Microsoft, Adobe, Autodesk, or other commercial software with under-counted licenses. The vendor can audit and demand back-payment plus penalties. Run a software inventory pre-close and confirm license counts match seat usage. Non-compliance is a contingent liability the seller should indemnify.

10. Real estate and lease terms: where does the business operate?

If the business operates from owned real estate, decide whether to buy the building. Many sellers own the operating company AND the real estate it operates from, often through a separate LLC. They lease the building to themselves at above-market rent (which inflates rent expense and depresses the company’s EBITDA — an add-back), or below-market rent (inflated EBITDA that won’t survive a normalized lease). Determine which, normalize the rent, and decide whether you’re buying the real estate too.

If you’re leasing, read the lease. Term remaining, renewal options, rent escalators, change-of-control restrictions, assignment rights, percentage-rent clauses, exit penalties. A lease with 18 months remaining and no renewal option is a deal risk — you may be forced to relocate within 2 years. A 20-year lease with above-market rent is a buried liability that won’t show up on the P&L until renewal.

Check for environmental issues at the site. Industrial, manufacturing, automotive, or chemical-handling businesses can have soil, groundwater, or building contamination. Environmental liability follows the property in most states. Commission a Phase I environmental site assessment before close. If anything turns up, escalate to Phase II testing. Don’t close on contaminated property without a cleanup escrow or seller indemnification.

Confirm zoning and use compliance. Some businesses operate under grandfathered zoning that doesn’t transfer. Some operate without proper certificates of occupancy. Some have made unpermitted improvements. Pull the zoning record, building department records, and recent inspection reports. Operating in violation post-close becomes the new owner’s problem.

11. Financing options: how will you actually pay for this?

Most small business acquisitions use a stack: equity + bank debt + seller financing. For deals under $5M, the SBA 7(a) loan is the dominant bank source — with seller financing typically required to fill the gap. For deals $5-25M, conventional senior debt from a regional bank or asset-based lender is common, often with a mezzanine or seller note layer. For deals over $25M, institutional senior debt and equity from a PE sponsor become the norm.

Get pre-qualified before you sign an LOI. A pre-qualification letter from a lender (SBA-preferred, conventional, or both) gives you credibility and removes uncertainty. Sellers and brokers strongly prefer buyers who’ve already done the financing work. Without pre-qualification, you risk weeks of diligence followed by a financing fall-out — embarrassing for you and damaging to your reputation in the broker community.

Understand the personal guarantee implications. SBA 7(a) loans require personal guarantees from anyone owning 20%+ of the buyer entity. Conventional bank debt usually requires PGs as well. Seller notes typically demand a PG. The aggregate personal exposure can be 100%+ of the deal value. Quantify your personal liability before signing the LOI — not after.

Build a financing fall-back plan. Lenders often re-trade between LOI and close: lower advance rates, additional covenants, more equity required. Have a plan if the original lender doesn’t fund as expected. A second lender quote in your back pocket. Additional equity sources identified. A clear point at which you’ll walk rather than overstretch. Buyers who lock into one lender lose negotiating leverage.

12. Transition plan: the first 90 days decide everything

Most failed acquisitions fail in the first 12 months post-close, not during diligence. The deal closes. The seller leaves. The buyer arrives. Customers get nervous. Employees update LinkedIn. Suppliers ask for COD terms. The 100 things that ran on the seller’s personal credibility now run on a new owner’s. A weak transition plan turns a good acquisition into a bad one.

Write the transition plan before you close. Customer communication: who calls the top 20 customers in the first week, what’s the message, what’s the seller’s role? Employee communication: when is the all-hands meeting, what changes, what stays the same? Supplier communication: who notifies key vendors, what assurances are given? Each of these is a project plan with owners and dates — not an aspiration.

Negotiate the seller’s post-close role into the contract. Most sellers offer a 30-60 day transition period as part of the deal. For owner-dependent businesses, that’s far too short. Push for 6-24 months in a defined consulting role with specific responsibilities: customer introductions for 90 days, employee mentoring for 6 months, on-call advisory for 12 months. Pay for the time — the cost is small compared to the risk it mitigates.

Plan your first 30, 60, 90 days. 30 days: meet every employee, every top-20 customer, every key supplier. Touch nothing structural. 60 days: identify the 3-5 quick wins (pricing, vendor terms, low-hanging operational improvements) and start them. 90 days: communicate your medium-term vision. Don’t announce the strategic vision in week one. Listen first, change second.

Conclusion

You are not buying revenue. You are buying the durability of revenue. The 12 considerations above are not a checklist to be ticked off and forgotten. They are the structural frame of every successful acquisition. Financial health and customer concentration tell you whether the business is real. Owner dependency and employee retention tell you whether it survives the transition. Growth, market, technology, supplier, legal, and lease tell you what it’s worth. Financing and transition planning tell you whether you can actually close and operate it. The buyers who do this work before signing the LOI — not after — are the buyers who don’t end up writing case studies about acquisitions that went sideways. Slow down at the front end. The deals worth doing will tolerate a careful buyer; the deals that won’t aren’t worth doing.

Frequently Asked Questions

What are the most important things to consider when buying a business?

The structural ones first: financial health, customer concentration, and owner dependency. If those fail, nothing else matters. After that: employee retention, supplier relationships, market trends, growth potential, technology, real estate/lease, legal/litigation, financing, and transition planning. The order matters because the structural factors can kill the deal, while the others mostly shape price and risk.

How do I evaluate the financial health of a business I’m buying?

Start with three years of financial statements plus a trailing-twelve-month P&L. Reconstruct EBITDA from the bottom up — don’t accept the seller’s ‘Adjusted EBITDA’ without testing each add-back. Look at gross margin trends, working capital needs, and cash conversion. For deals over $2-3M of EBITDA, commission your own Quality of Earnings study before close.

What is customer concentration and why does it matter?

Customer concentration is the percentage of revenue from your top customers. Top customer over 20% is a yellow flag; over 35% is structural risk. If that customer leaves post-close, the business’s value drops sharply. Mitigate concentration with earn-outs tied to customer retention, holdbacks, or price reductions — not optimism.

How do I tell if a business is too dependent on the current owner?

Three diagnostic questions: When was the last time the seller took two consecutive weeks off? Who signs off on customer pricing decisions? Who do top customers call when something goes wrong? If the answers are ‘never,’ ‘the owner,’ and ‘the owner,’ the business is owner-dependent. Mitigate with extended seller transition periods, earn-outs, and retention agreements with key employees.

Should I buy the real estate along with the business?

Sometimes. If the seller owns the real estate through a separate entity and leases it to the operating company, the rent is often above or below market. Normalize the rent first. Then evaluate the real estate as an investment on its own merits: location, alternative tenants, market value. If the real estate is critical to operations and there’s no alternative location, owning it removes lease risk. Otherwise, a long-term lease at market rate is often better.

How long should the seller stay involved post-close?

30-60 days is standard but usually too short for owner-dependent businesses. For high-dependency businesses, push for 6-24 months in a defined consulting or employment role with specific responsibilities (customer introductions, employee mentoring, on-call advisory). Pay for the time — the cost is modest compared to the risk it mitigates.

What financing options exist for buying a small business?

For deals under $5M, the SBA 7(a) loan is dominant, often combined with seller financing. For deals $5-25M, conventional senior debt from regional banks or asset-based lenders, sometimes with mezzanine or seller notes. For deals over $25M, institutional senior debt plus equity from a PE sponsor. Get pre-qualified before signing an LOI.

What red flags should I look for during due diligence?

Customer concentration over 35%, owner dependency where the seller is the business, declining gross margins, deferred capex, key employees with no retention agreements, supplier concentration over 30%, pending litigation, environmental contamination, expiring leases without renewal options, IP ownership defects, and software license non-compliance. Each is a contingent liability or structural risk that should reprice or restructure the deal.

How do I value a small business?

The most common approach is a multiple of EBITDA. Multiples vary by industry, size, and quality — small businesses ($1-3M EBITDA) trade at 3-5x; mid-market ($3-15M EBITDA) at 5-8x; larger and higher-quality businesses at 8-12x or more. Discounted cash flow (DCF) and asset-based methods are also used. Whatever the method, underwrite to base case, not upside case.

What happens to employees when a business is sold?

In an asset sale, employees are typically terminated by the seller and rehired by the buyer on day one. In a stock sale, the employer doesn’t change — employees keep tenure, benefits, and accrued PTO. Either way, key employees need retention agreements signed before close. Retention bonuses, raises, and clear communication on day one keep the team intact.

How long does it take to buy a business?

Typically 4-9 months from first conversation to close. The phases: 30-60 days of courtship and initial diligence; 30-45 days from LOI to definitive agreement; 30-60 days from signing to close (financing, regulatory approvals, final diligence). Complex deals or deals with regulatory approval requirements can take 12+ months.

What’s the most common reason acquisitions fail post-close?

Weak transition planning. The deal closes, the seller leaves, and the new owner can’t replicate the seller’s personal relationships with customers, employees, and suppliers. Most failed acquisitions fail in the first 12 months post-close, not during diligence. The fix: a written transition plan, a 6-24 month seller consulting role for owner-dependent businesses, and disciplined first-90-day execution focused on listening before changing.

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