The process of calculating estimated manufacturing overhead cost per unit is a fundamental aspect of cost accounting. This rate is computed by dividing estimated total overhead costs by an allocation base, typically a measure of activity such as direct labor hours, machine hours, or direct labor cost. For example, if a company estimates total overhead costs of $500,000 and expects 25,000 direct labor hours, the estimated rate would be $20 per direct labor hour ($500,000 / 25,000 hours).
Establishing this rate provides several benefits for management. It allows for the timely application of overhead costs to products or services throughout the accounting period, rather than waiting until actual costs are known at the end of the period. This is crucial for pricing decisions, cost control, and performance evaluation. Historically, this calculation has aided in bridging the gap between actual and applied overhead, enabling more accurate financial reporting and operational efficiency.