Overhead Allocation - Review and Expansion

Manufacturing overhead consists of all indirect costs incurred within the factory setting.
By definition, manufacturing overhead is indirect, meaning it cannot be traced directly to specific units of production.
The objective of allocating manufacturing overhead is to ensure that each cost object (such as an individual unit of product) is assigned its fair share of the total overhead costs.

Indirect Materials - These are materials utilized in the production process that either do not appear in the final product or are not significant enough to be worth tracking as direct components. - Specific examples include: - Glue used in the product (which may physically remain in the product but is treated as indirect). - Lubricants applied to manufacturing machinery. - Cleaning materials used for factory maintenance (e.g., floor cleaners).
Indirect Labor - This category includes the cost of all factory personnel except for direct laborers who work physically on the product. - Specific examples include: - Supervisors overseeing direct laborers. - Janitorial staff responsible for cleaning the factory floors. - Maintenance workers responsible for equipment upkeep, such as applying lubrication to machines.
General Factory Overhead - This encompasses all remaining factory-related costs that do not fall under indirect materials or indirect labor. - Specific examples include: - The lease on the factory building. - Depreciation expenses for factory machinery. - Insurance costs related to the factory. - The cost of power (utilities) required to run the factory operations.

To determine how much overhead is assigned to each product, a rate is established to allocate indirect costs.
The fundamental equation for this rate is: - $\text{Overhead Application Rate} = \frac{\text{Total Cost of Manufacturing Overhead}}{\text{Total Count of the Cost Driver}}$

Single vs. Multiple Rates - A factory may employ a single overhead rate for the entire facility. - Alternatively, a factory may use a set of separate, different rates that collectively represent the entire factory's overhead.
Requirements for Multiple Rates - If multiple rates are used, the total of all specific cost pools associated with those rates must sum exactly to the total manufacturing overhead for the entire factory.
The Denominator (Cost Driver) - For every rate (whether single or multiple), the denominator must be a countable metric. - This metric should represent a specific feature of the product being made or the nature of the work being performed.

Before applying numbers to the overhead rate formula, management must address two primary questions: 1. Measurement Method: How will the manufacturing overhead costs be measured? The choices include: - Actual costs. - Normal costs. - Standard costs. 2. Cost Pools and Drivers: If using a single rate, a countable denominator common to all products must be identified. If using multiple rates, the organization must decide how to structure them.
Organization of Multiple Rates - Rates can be organized around specific Departments within the factory. - Rates can be organized around the Steps and Processes utilized to manufacture the product.