Customer concentration risk in a business sale

0:45

Whiteboard session

Nick on customer concentration

Nick looks at your biggest account the way a buyer does: what leaves with it if it goes, and what stays behind.

Table 1. Entry 21 in the Exit Elements specification, version 1.4.
Symbol	Cc	Number	21	Family	Cc Risk	Position	G3
Scored as	Control: higher is safer	Compounds	None	Worked in	Sell	Pillar	Customer and revenue quality

§1 Definition

What customer concentration is

Revenue share held by the top customers. Scored as control: higher is safer.

Customer Concentration is the share of revenue held by your largest customers. It is the specific risk that one customer’s decision could remove a large piece of your business overnight, and its mirror image is the spread of revenue across accounts, where no single customer is large enough to move the valuation. As a working rule, buyers grow cautious above 15% of revenue from one customer and heavily discount above 25%; the FNDRS engine scores concentration continuously and applies a hard additional penalty when one customer reaches 40% of revenue. Buyers price this risk directly, often by lowering the multiple or structuring part of the payment as an earn-out tied to that customer staying. It is scored as control, so a high score means the concentration is contained.

A packaging supplier with 300 customers, none above 5% of revenue, is diversified. A logistics company with a 40% anchor account is not a bad business, but it is a business a buyer will pay less for, or pay for later, and a contract manufacturer with one anchor at 45% is a single decision away from a very different business.

Use cases

Tracking the top-one and top-five customer share each quarter, putting long-term contracts in place with your largest customers, expanding your relationship inside those customers across departments so the risk is spread, deliberately winning mid-sized accounts rather than only chasing large ones, and growing the rest of the base faster than the anchor.

The risk family

Exposures that cause a buyer to discount the multiple or walk away. Risk elements are scored as control: a higher score means the risk is contained.

The discount. What buyers subtract for. Scored as control, so a higher score is safer: owner dependence, documentation, concentration, key people, compliance.

Meet the family

§2 Measurement

What the assay measures

Revenue share of the largest customer and of the top five, and the contract terms protecting that revenue.

Critical gapLeaking valueDevelopingStrong13Today100Target

Critical gap: 0 to 24
Leaking value: 25 to 49
Developing: 50 to 74
Strong: 75 to 100

Figure 1. Sample assay for Acme Industrial: customer concentration scores 34 today (leaking value) against a target of 62 (developing). Sample scores, not a client. Your own assay comes from the exit score and the valuation.

How the scale reads

Every element is scored from 0 to 100 against what a sophisticated buyer expects at close.
Risk elements are scored as control: higher is safer.Applies here
Inputs are recorded, not targeted.
Outcomes are derived from their feeding families.

Figure 2. Radar of the risk series (Acme Industrial sample): the filled shape is today, the dashed outline is target, and the marked axis is Customer Concentration.

§3 Profile

The risk family in profile

Today's score for every element in the family, drawn as one shape against the dashed outline of the targets. The shape shows where the family is thin: customer concentration is the marked axis.

Tm Tl Cp Dm Pr Gm Rv Oe Rr Rt Cf Pd Md Se Ip Br Ta Sy Od Dd Cc Kp Lc Td Sp Ac Dr Sc Tx Es In Ap Ev Op Fr Lg

Figure 3. Customer Concentration at G3 in the standard table: column G, row 3. Columns group the families; the wealth series runs beneath.

§4 Position

The risk series

6 elements share the family. Read them together: a buyer prices them as a group.

§5 Compounds

Customer Concentration stands alone

This element is not part of a named compound. It is priced on its own, through the family it belongs to.

§6 In the FNDRS journey

Where customer concentration gets worked

The assay scores it. The process, the pillars, and the platform move it. Table 2 lists every place this element is on the agenda.

Table 2. Where element 21 appears in the FNDRS journey.
Where	What happens	Alongside	Go
StageSell	Maximize value and optionality. Prepare, position, market, negotiate, and transact so the outcome is the best risk-adjusted one for the owner. Or hold, from a position of strength.	Sy Dr Sc Ev Op	The process
Pillar of valueCustomer and revenue quality	Buyers underwrite this compound before anything else: revenue that repeats without being re-sold, customers who stay, and no single account that can sink the deal.	Rr Rt	The pillar

Figure 4. Customer Concentration against the neutral pivot (Acme Industrial sample): above 50 adds premium to the market base multiple, below 50 subtracts. The hollow mark is the target.

§7 In the valuation

What the FNDRS valuation reads for customer concentration

Measured High leverage

The FNDRS valuation reads this element directly. Its assay score derives from the same answers the engine scores, so the assay and the valuation can never disagree.

What FNDRS reads

Top-one and top-five customer revenue share, scored continuously.

Guardrail: the FNDRS engine applies a hard additional penalty when one customer reaches 40% of revenue.

How the table meets the number

Find out where your customer concentration stands

The exit score is the first assay: fifteen minutes, six pillars, and a first read on the elements that matter most.

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