A customer contributes modest revenue but places frequent small orders, requests special reports and regularly changes delivery instructions. The product margin looks acceptable, while the surrounding service consumes substantial effort. The relationship may still be worthwhile, but its economics cannot be understood through gross margin alone. Cost to serve makes the work around the sale visible enough for a better commercial conversation.
Observe the pattern
Order frequency, delivery complexity and support requests can provide a practical starting point. The business does not need to allocate every minute precisely before learning something useful. A focused review of recurring activities can reveal whether certain accounts require substantially more effort than others and whether that effort reflects a valuable service or avoidable friction in the way the relationship is organised.
Avoid simplistic ranking
A smaller account may offer growth, diversification or access to a useful market. Those benefits deserve consideration. The analysis should not automatically favour large customers or encourage staff to withdraw reasonable service. Its purpose is to identify the true commercial exchange, including strategic value, so that management can decide whether the account's current terms and operating pattern remain a sensible fit.
Redesign the routine
Consolidated orders, standard reporting or clearer delivery windows may improve economics for both sides. The customer may welcome a more predictable process if the benefit is explained. A price increase is only one possible response. Often the first opportunity lies in changing the work that makes the account expensive, while preserving the features the customer genuinely values and is willing to support.
Review after the change
The enterprise should observe whether the revised arrangement reduces effort and maintains service quality. This keeps cost-to-serve analysis connected to practical improvement. A relationship becomes more sustainable when both parties understand the operating requirements behind it, allowing the supplier to provide dependable service without relying on hidden administrative work that grows faster than the account's contribution to the business.

