Case Study In Selling a Business: 2 Businesses Each with $4 Million in Sales, Two Very Different Outcomes
How Customer Concentration Changed the Value of Two Similar Companies
When owners prepare to sell their business, many believe that revenue and profit are the primary drivers of value. While financial performance is certainly important, sophisticated buyers evaluate much more than the income statement. One of the biggest factors influencing purchase price, financing, buyer confidence, and deal structure is customer concentration.
The following fictional case study compares two Florida companies with nearly identical financial performance. Both owners wanted to retire. Both businesses had approximately $4 million in annual revenue and similar profitability. Yet their sale outcomes were dramatically different.
Although the names and companies are fictional, the situations closely resemble real-world transactions that business brokers encounter every year.
Company A – Gulf Coast Precision Manufacturing
Industry
Custom Metal Manufacturing
Location
Southwest Florida
Years in Business
22 Years
Annual Revenue
$4,050,000
Seller’s Discretionary Earnings (SDE)
$820,000
Employees
21
Equipment
Modern CNC machining center with well-maintained equipment.
From a financial perspective, Gulf Coast Precision Manufacturing looked like an outstanding business.
Revenue had steadily increased for seven consecutive years.
Profit margins remained strong.
The facility was clean and organized.
The management team was experienced.
The owner believed the company would sell quickly.
Then buyers reviewed the customer list.
Customer Breakdown
| Customer | Annual Revenue | % of Total Revenue |
|---|---|---|
| National Aerospace Manufacturer | $2,470,000 | 61% |
| Customer #2 | $380,000 | 9% |
| Customer #3 | $220,000 | 5% |
| All Remaining Customers | $980,000 | 25% |
More than 60% of revenue depended on one customer.
Immediately buyers began asking questions.
- What happens if this customer leaves?
- Is there a long-term contract?
- Does the relationship depend on the owner?
- How competitive is this account?
- Has pricing remained stable?
- Are purchase orders guaranteed?
Additional Findings
During due diligence buyers discovered:
The largest customer had been with the company for 18 years.
Unfortunately…
There was no long-term contract.
Purchase orders were issued quarterly.
Either party could discontinue the relationship with little notice.
Even though the relationship was excellent, buyers recognized that future revenue depended largely on a decision completely outside their control.
Buyer Reactions
The business generated significant interest.
Seven buyers signed confidentiality agreements.
Four submitted letters of intent.
However, every offer reflected the customer concentration risk.
Typical buyer comments included:
“Excellent company, but losing one customer would reduce revenue by more than half.”
“We love the business, but we need protection.”
Initial Asking Price
Based on industry multiples:
$3,300,000
Highest Initial Offer
$2,700,000
The buyer also requested:
- 20% seller financing
- 18-month earn-out
- Larger escrow holdback
- Extended due diligence
The seller was disappointed.
He believed the business deserved much more.
Final Transaction
After several months of negotiations:
Final Sale Price
$2,850,000
Deal Structure
- $1,900,000 paid at closing
- $450,000 seller financing
- $500,000 earn-out tied to retaining the largest customer for 18 months
Although the owner successfully sold the company, he accepted nearly $450,000 less than his original expectations and had to wait for a significant portion of the proceeds.
Company B – Coastal Industrial Supply
Industry
Industrial Supply Distribution
Location
Southwest Florida
Years in Business
24 Years
Annual Revenue
$4,020,000
Seller’s Discretionary Earnings
$815,000
Employees
19
Warehouse
Modern warehouse with efficient inventory systems.
Financially, Coastal Industrial Supply looked remarkably similar to Gulf Coast Precision Manufacturing.
Revenue differed by less than one percent.
Profit was nearly identical.
Equipment quality was similar.
Management experience was comparable.
The difference appeared when buyers analyzed the customer list.
Customer Breakdown
| Customer | Annual Revenue | % of Revenue |
| Largest Customer | $265,000 | 6.6% |
| Second Largest | $230,000 | 5.7% |
| Third Largest | $195,000 | 4.8% |
| Remaining 480 Customers | $3,330,000 | 82.9% |
No customer represented more than 7% of annual sales.
Revenue was spread across hundreds of long-term commercial accounts.
Additional Findings
Buyers also learned:
- Average customer relationship exceeded 11 years.
- More than 70% of customers reordered every year.
- Sales were handled by multiple account managers.
- Customer relationships did not depend solely on the owner.
- Customer database and CRM were well documented.
Immediately buyers viewed the business as significantly less risky.
Buyer Reactions
Interest was substantially stronger.
Eleven buyers signed confidentiality agreements.
Eight submitted letters of intent.
Competition between buyers actually increased pricing.
Several buyers commented:
“Even if the largest customer disappeared tomorrow, the business would continue operating normally.”
“The diversified customer base makes future cash flow much more predictable.”
Asking Price
Based on market multiples:
$3,300,000
Highest Offer
$3,550,000
Unlike Company A, buyers competed with one another.
Several offers included:
- All cash
- No seller financing
- Limited escrow
- Faster closing
- Shorter due diligence
Final Transaction
Sale Price
$3,500,000
Deal Structure
- $3,350,000 cash at closing
- $150,000 held briefly in escrow for standard post-closing adjustments
- No earn-out
- No seller financing required
The owner received nearly all proceeds immediately at closing.
Side-by-Side Comparison
| Metric | Company A | Company B |
| Revenue | $4.05 Million | $4.02 Million |
| SDE | $820,000 | $815,000 |
| Largest Customer | 61% | 6.6% |
| Years in Business | 22 | 24 |
| Employees | 21 | 19 |
| Buyer Interest | Moderate | Very High |
| Seller Financing | Required | None |
| Earn-Out | Yes | No |
| Cash at Closing | $1.9 Million | $3.35 Million |
| Final Sale Price | $2.85 Million | $3.50 Million |
Why Did Buyers Pay More?
The difference wasn’t the financial statements.
It wasn’t the equipment.
It wasn’t the building.
It wasn’t the employees.
The difference was risk.
Every buyer asks one fundamental question:
“Will this business continue producing the same income after I buy it?rdquo;
For Company A, losing one customer could eliminate more than half of the revenue overnight. Buyers compensated for that uncertainty by lowering their offers and requiring seller financing and performance-based payments.
For Company B, no single customer could significantly damage the business. Buyers felt confident that the company’s earnings were sustainable, so they competed aggressively, increased their offers, and agreed to favorable terms for the seller.
Lessons for Business Owners
Whether you plan to sell your business next year or ten years from now, customer concentration deserves your attention.
If one or two customers account for a large percentage of revenue, consider strategies to diversify before selling your business. Adding new customers, expanding into additional industries, building recurring revenue, and documenting customer relationships can significantly reduce buyer concerns.
Even if diversification takes several years, the payoff can be substantial—not only in a higher selling price but also in better deal terms, more cash at closing, and a smoother transaction.
The Bottom Line
These two fictional companies generated almost identical revenue and profits. Yet one owner walked away with approximately $650,000 more, received almost all of the proceeds at closing, and avoided seller financing and earn-outs. The other owner still achieved a successful exit, but accepted a lower price and carried additional risk after the sale.
This example illustrates a critical lesson for every business owner: business value is determined not only by the amount of earnings a company generates, but also by how reliable and sustainable those earnings appear to a buyer. Reducing customer concentration is one of the most effective ways to increase both the value and the marketability of your business before it goes on the market.