When Departments Charge Each Other, the Business Can Pay Twice
Internal charges promise accountability. But when accounting prices become operating signals, departments can improve their own budgets while weakening the business.

A department that pays for every request to a central team has a reason to ask for less. That can be useful when requests consume scarce resources. It can be damaging when the work prevents mistakes, improves a product or helps another department succeed. The strategic question is not whether internal services should appear free. It is whether the price attached to them encourages decisions that make sense for the whole business.
Internal charging offers an appealing form of accountability. Technology, legal support, design and other shared functions consume resources, while the teams requesting their help may not see the full expense. Assigning charges makes those demands visible and gives managers something concrete to challenge. But visibility and sound incentives are different achievements. A cost can be accurately recorded yet assigned in a way that discourages economically sensible work.
Consider a hypothetical product team deciding whether to request an additional review from an internal specialist. If the specialist has available time, the extra review might add little to the company’s immediate spending. Yet an internal fee that includes a share of salaries, office costs and management overhead could make the request look expensive. The product manager sees a budget penalty even though the company faces a much smaller incremental cost.
The opposite problem is also possible. A low standard charge can encourage requests that absorb scarce expertise needed elsewhere. In that case, the accounting price understates the real trade-off: another project must wait. Neither a fully allocated cost nor a nominal fee automatically captures the economic value of capacity. An internal price is a management choice, not a neutral description of what the next request costs.
Trouble deepens when managers are judged primarily on the budgets they control. A team can improve its reported performance by declining internal support, shifting work to colleagues or creating a separate capability outside the shared service. Each move may be defensible within its own accounts. Taken together, those decisions can duplicate work or leave important risks unaddressed. The accounting boundary becomes an operating boundary, even where the work itself remains interconnected.
Allowing departments to buy externally does not automatically resolve the distortion. An outside provider’s quote and an internal charge may cover different obligations. One might include ongoing support, security requirements or responsibility for difficult cases; the other might not. Comparing the headline prices without aligning those responsibilities can reward the narrower offer. A useful comparison asks which costs actually disappear, which remain and which new coordination tasks the choice creates.
That does not make internal charging inherently misguided. Where demand is discretionary and additional requests create additional expense, a charge can help managers weigh benefits against costs. It can also expose a shared service whose scope has become difficult to justify. The problem arises when one charging formula is expected to allocate overhead, ration scarce capacity, evaluate performance and guide individual purchasing decisions at the same time.
A more coherent design separates those purposes. A fixed contribution can fund the capacity the business has chosen to maintain. A usage charge can reflect expenses that genuinely rise with demand. Where expertise is constrained, an explicit priority decision may be more useful than a price that merely favors the department with the largest budget. These approaches still require judgment; none removes the need to decide which work matters most.
Performance assessment must follow the same logic. If collaboration is strategically important, managers need room to approve work that benefits another team without being treated as poor budget holders. Shared services, meanwhile, need scrutiny of quality, responsiveness and necessity, rather than protection from challenge. Accountability should test both the demand for work and the way that work is delivered.
The decisive test is what happens when a manager follows the incentive exactly as designed. Does the resulting decision conserve a resource, improve an outcome or reveal an avoidable expense? Or does it simply move a cost elsewhere? Internal accounts are useful instruments, but they are not separate businesses. A company loses the point of financial discipline when making every department look efficient makes the whole operation less so.