How much room does your largest customer leave for growth?
Your largest account orders consistently. The team knows its contacts, its specifications, and the importance of getting the work right. Over time, employees have also learned how to absorb the account’s revisions, scheduling changes, and special requests.
That effort may be worthwhile. It should still be visible when you decide how to expand the relationship. Account revenue needs to be considered alongside the contribution it produces and the operating capacity it uses.
At Mirabilys, we suggest examining those elements before deciding whether to raise prices, change the service model, or pursue a different customer mix. The review should show what deserves to be preserved and what needs a clearer agreement.
Consider a hypothetical US technical services company. All figures are US dollars. Its largest customer generates $2 million in annual revenue. After the direct costs already recorded against the work, the account contributes $700,000, or 35% of revenue.
A review then identifies $60,000 in special travel, $45,000 in rework, and $35,000 in outside services specific to the account. For this illustration, those costs were not included in the original direct cost calculation.
The additional $140,000 brings adjusted contribution to $560,000, or 28% of account revenue. That contribution still needs to support the company’s remaining fixed overhead. It is not net profit.
In your own review, avoid deducting the same expense twice. Labor already included in production costs should not reappear as an additional service charge. Keep estimates visible so they can be replaced with measured information.
Also distinguish an avoidable expense from a cost the business would continue to carry. Reducing a customer’s workload does not automatically eliminate a permanent employee’s salary. It may release useful capacity, but that benefit needs its own examination.
An account can provide an attractive contribution while occupying the resource the company needs for additional work. The relevant resource might be a specialist technician, an engineering review, a machine, or a limited installation window.
In the same hypothetical example, the largest account uses 2,000 annual hours of the company’s constrained resource. Its $560,000 contribution therefore represents $280 per hour of that resource. A different group of jobs contributes $450,000 while using 1,000 hours of the same resource, or $450 per hour.
This comparison describes how limited capacity is being used. It does not establish that the largest account should be replaced. The costs must be measured consistently, and the other jobs must be available, compatible with the schedule, and feasible for the team.
If there is no alternative demand, released capacity may remain unused. If credible demand exists, a change in service requirements could allow the company to develop additional work while retaining the established customer.
The purpose is to understand the choice before making it. A theoretical margin on work you cannot win or deliver does not represent an operating option.
Review recent orders with the person managing the account and the person responsible for execution. Include revisions, returns, travel, special approvals, and work that required unusual attention.
Look for repetition. Specifications may arrive after production planning. Several small orders may create avoidable setup work. A recurring customization may be ready to become a defined product configuration. One approval may repeatedly wait for the owner.
Those observations can support a proposal the customer also finds useful. Shared scheduling, a specification approval date, consolidated ordering, or a separately defined support service may improve how both companies work together.
A price adjustment may still be appropriate. It is easier to evaluate when the company can describe the service provided, the resources required, and the operating arrangement it proposes for the next period.
Contribution: Account revenue, direct costs, and additional attributable expenses, with no duplicated charges.
Capacity: The constrained resource used, the periods affected, and other credible demand for that resource.
Exceptions: Repeated requests that change the work originally planned.
Proposed change: The service condition or operating arrangement to discuss with the customer.
Evidence after the change: The measure to review and the person responsible for maintaining it.
Keep this brief close to actual orders. The customer conversation should connect the proposal to the way work is performed. That gives both sides a chance to improve the relationship without relying on broad claims about rising complexity.
An important account can outgrow the service arrangement under which it began. Higher volume, new products, and different teams may require more explicit decisions about timing, support, and approvals.
When that evolution affects margins, operations, commercial capacity, and staffing together, a broader diagnostic can be useful. The Sentinel Mandate provides a way to examine those connections. The fee is shared during the discovery call.
Bring the account’s sales record and a few representative orders, including one that required substantial attention. Comparing them gives the discussion a concrete foundation and helps identify which part of the relationship deserves work first.
Is a large account with a lower contribution a bad account?
Not by itself. Adjusted contribution and capacity use describe the account; the decision requires alternative demand that is real, compatible with the schedule, and feasible for the team. A theoretical margin on work you cannot win is not an operating option.
How do I avoid double counting in the adjusted contribution?
An expense already inside direct costs must not be deducted again as a service cost. In the example, the additional $140,000 is attributable to the account and absent from the original direct costs. Keep each estimate identifiable and replaceable by a measured figure.
Should I raise prices on my largest customer?
A price adjustment is easier to discuss when you can name the service provided, the resource it uses, and the operating arrangement you propose next. Start with the recurring exceptions: several of them lead to changes the customer also finds useful.
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For owners of 1-20 M$ businesses. A fixed-fee mandate, identical for every client: six weeks, nine components.