01/06/2026
📌 𝗧𝗵𝗲 𝟰𝟬% 𝗥𝘂𝗹𝗲: 𝗗𝗼 𝗬𝗼𝘂 𝗛𝗮𝘃𝗲 𝗧𝗼𝗼 𝗠𝗮𝗻𝘆 𝗘𝗴𝗴𝘀 𝗶𝗻 𝗢𝗻𝗲 𝗕𝗮𝘀𝗸𝗲𝘁?
𝗠𝗼𝘀𝘁 𝗳𝗼𝘂𝗻𝗱𝗲𝗿𝘀 𝘁𝗿𝗮𝗰𝗸 𝗿𝗲𝘃𝗲𝗻𝘂𝗲 𝗴𝗿𝗼𝘄𝘁𝗵.
𝗙𝗲𝘄𝗲𝗿 𝘁𝗿𝗮𝗰𝗸 𝘄𝗵𝗲𝗿𝗲 𝘁𝗵𝗮𝘁 𝗿𝗲𝘃𝗲𝗻𝘂𝗲 𝗰𝗼𝗺𝗲𝘀 𝗳𝗿𝗼𝗺.
Client concentration risk arises when a single customer, or a small cluster of customers, accounts for a disproportionate share of revenue. In some industries it can be natural to have larger customers, especially in business-to-business markets with long-term contracts. But as dependency grows, revenue becomes fragile in ways that aren’t obvious from top-line growth figures.
Having many of your eggs in one basket exposes you to sudden revenue shocks if a key client reduces orders, delays payment, or – horror of horrors – ends the relationship. The “40% Rule” is a practical red flag used by bankers, acquirers, and investors: if a small group of clients contribute 40% or more of total revenue, the business carries material concentration risk.
This article unpacks why 40% matters, how it influences due diligence, and what business owners can do to reduce exposure without destabilising current income.
𝗪𝗵𝘆 𝘁𝗵𝗲 𝟰𝟬% 𝘁𝗵𝗿𝗲𝘀𝗵𝗼𝗹𝗱 𝗺𝗮𝘁𝘁𝗲𝗿𝘀
The “40% Rule” is not an ironclad regulation, but a pragmatic benchmark widely used in finance, banking, and valuation circles. When one or two clients account for around 40% or more of revenue, credit committees, acquirers, and investors often treat it as a material concentration risk. Above this level, the loss of a single account can eliminate a large portion of expected cash flow, put pressure on fixed costs, and lead to breaches of debt covenants.
If you pass the 40% mark, lenders may become cautious or impose stricter terms on financing. This makes sense, as your ability to pay them back is contingent on a relationship they cannot control.
𝗛𝗼𝘄 𝗰𝗼𝗻𝗰𝗲𝗻𝘁𝗿𝗮𝘁𝗶𝗼𝗻 𝗿𝗶𝘀𝗸 𝗮𝗳𝗳𝗲𝗰𝘁𝘀 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀 𝗳𝗶𝗻𝗮𝗻𝗰𝗲𝘀... - 𝐷𝑜𝑡𝑁𝑒𝑤𝑠
𝗖𝗢𝗡𝗧𝗜𝗡𝗨𝗘 𝗥𝗘𝗔𝗗𝗜𝗡𝗚 𝗧𝗛𝗜𝗦 𝗔𝗥𝗧𝗜𝗖𝗟𝗘 - https://sl1nk.com/hiikab5
