When several teams use the same machine, charging its entire cost to the team that bought it can distort department reports. An internal usage rate gives each team a share of the cost and helps explain what remains unallocated.

Define the cost pool

List costs tied to the equipment for the reporting period, such as depreciation or lease expense, maintenance, and operating supplies. Use consistent categories and exclude costs that teams already record directly. Document which costs belong in the pool and who reviews them.

Choose a measure you can verify

Use machine hours when time is a reasonable driver. If different jobs consume supplies at very different rates, track those supplies separately. Use a meter, booking log, or job ticket and agree on what counts as a billable hour.

Calculate the rate and reconcile the difference

Suppose the monthly budget is $3,600 and the teams expect 120 machine hours. The internal rate is $30 per hour. If Team A logs 70 hours and Team B logs 40, allocate $2,100 and $1,200, respectively. If actual costs are $3,750, the $450 left unallocated consists of $300 from usage falling 10 hours short of plan and $150 from costs exceeding budget.

Review the difference before changing the rate. Missing time entries call for a different fix than lower demand or a maintenance overrun. For departments within one legal entity, use the allocation to move costs for management reporting without increasing total company expense.

Keep a monthly review trail

Save the cost detail, usage records, calculation and approval together. Review the rate when the equipment mix, expected usage, or maintenance costs change. If the allocation serves grant reporting or transactions between legal entities, check the applicable rules separately.

Source

The University of Rhode Island’s Policy on Service Centers illustrates setting internal rates to recover eligible operating costs and reviewing surpluses. Its institutional rules apply to its service centers. The example above is an illustrative management accounting calculation.

Discuss cost accounting and reporting support with Summer Peaks.