Many overhead costs that are not driven by production volume may be incorrectly assigned. When each is in charge of multiple products with varying labour and machine hours, the departmental overhead rate will skew.
This is more likely to happen in large departments. This also adds redundancy because each department must measure and calculate its own rate. Advantages: More precise allocation of overhead costs. Controlling overhead costs more effectively. Concentrate on important factors. This method makes production when overhead resources are consumed in significantly different ways by various products across multiple departments. The departmental overhead rate is an expense rate calculated for each department in the manufacturing process of a factory.
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