What it means
A business is a set of promises made to other people, and business relations are how those promises get managed. Each relationship carries commercial terms: what is sold, at what price, on what credit, and how easily either side can walk away.
Treating them as a purely human matter is a mistake, because every one of those terms shows up in the cash flow statement. The commercial reason to take them seriously is dependency.
A customer that provides 40% of revenue is not just a good customer; it is a concentration risk that lenders, insurers and acquirers will price. The same is true in reverse for a sole supplier of a critical component.
Relations also set the terms of trade that fund the business. A supplier who trusts you gives 60 days instead of 30, which is free working capital, while a customer relationship built on discounts rather than service tends to shorten your own collection period.
Many small businesses are funded less by their bank than by the goodwill of their suppliers. In accounting there is a formal edge to the term as well.
Relationships with owners, directors and businesses under common control are related party relations, and they must be disclosed in the financial statements because they may not be at arm's length. An interest free intercompany loan or a property rented from a director's family company belongs in that disclosure.
The practical measure is concentration, tracked on both sides of the business. Report revenue by customer and spend by supplier every quarter, and set a threshold at which a single relationship triggers a formal plan to diversify.
Buyers running due diligence ask for exactly this schedule, so it is worth keeping before anyone demands it.
In practice
Real-world examples.
Example
A speciality coffee roaster sells to 240 cafes, but one supermarket chain accounts for $3,600,000 of its $9,000,000 revenue. When the chain moves to annual tenders, the roaster's bank reduces its overdraft from $1,200,000 to $700,000 purely on relationship concentration.
Example
A civil engineering contractor has paid its two main subcontractors on time for nine years. When a client delays a $2,000,000 milestone payment, both subcontractors agree to wait 45 days rather than suspend work, which keeps the project alive. The relationship, not the contract, is what carried the cash flow gap.
Example
A family owned retailer rents its two stores from a company owned by the founder's brother. The auditor requires the arrangement and the $168,000 annual rent to be disclosed as a related party transaction, so readers of the accounts can judge whether the rent is at market rates.
Formula
Calculation
The standard measure of relationship dependency is a concentration ratio: Customer Concentration = (Revenue from One Customer / Total Revenue) x 100, and the same arithmetic applied to purchases gives supplier concentration.
A packaging business reports total revenue of $12,000,000. Its largest customer accounts for $4,200,000, the second for $2,400,000 and the third for $1,200,000. Largest customer concentration = ($4,200,000 / $12,000,000) x 100 = 35%, and top three concentration = ($4,200,000 + $2,400,000 + $1,200,000) / $12,000,000 x 100 = $7,800,000 / $12,000,000 x 100 = 65%. A lender looking at that profile will usually either cap the facility or ask for a covenant tied to the largest contract, because losing one relationship removes more than a third of the revenue.Case study
Seen in the real world.
Calder Valley Textiles is an illustrative and clearly fictional mill, used here to show how business relations translate into numbers. For six years it sold 52% of its output to a single clothing brand, which paid reliably on 30 days and absorbed almost all of the mill's capacity planning.
When the brand restructured its supply base, that volume went in one season. Revenue fell from $8,400,000 to $4,300,000, and because the mill had staffed and financed itself around one relationship, it breached its interest cover covenant within two quarters.
The recovery plan was deliberately unglamorous: a target that no customer exceed 20% of revenue, a quarterly concentration report to the board, and credit terms standardised across the new customer base. Three years later the largest relationship was 17% of a smaller but far more financeable $6,100,000 of revenue.
Watch out
Common mistakes.
- Treating business relations as a sales topic with no balance sheet consequence, when payment terms and concentration are both financing decisions.
- Measuring customer concentration but ignoring supplier concentration, which is often the sharper risk because one missing component can stop all revenue.
- Leaving related party relationships out of the accounts because they feel private, which is one of the fastest ways to lose an auditor's confidence.
Questions
People also ask.
What counts as dangerous customer concentration?
There is no universal line, but many lenders start asking hard questions above roughly 20% to 25% of revenue from a single relationship.
Are business relations the same as related party transactions?
No, related party transactions are the narrow accounting subset involving owners, directors and connected companies, which must be disclosed.
How do I show the value of a relationship to a buyer?
Show its length, repeat order rate, contracted term and the margin it earns, because a buyer discounts anything that depends on one person's goodwill.
From the founder's library
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