The incremental cost allocation method ranks users based on their priority or usage. The primary user is the one ranked first. The user ranked second is referred to as the first incremental user because they are the first to be assigned costs beyond the primary user's allocation. This hierarchy helps in distributing common costs among multiple beneficiaries.

The single-rate cost allocation method applies a uniform rate to all cost objects regardless of the specific department or division. Since the established rate for Division A is $90 per hour, the same rate must be applied to Division B to ensure consistency and uniformity in the allocation process across the organization.

The dual-rate method separates fixed and variable costs. In this scenario, the calculation is (8,500 hours * $120) + (9,500 hours * $110). This equals $1,020,000 + $1,045,000, resulting in a total of $2,065,000. This method is effective for performance evaluation as it distinguishes between the costs of capacity (budgeted) and the costs of actual usage, providing better insights into departmental efficiency and cost control.

The reciprocal method is the most accurate approach for allocating support department costs because it fully recognizes the interdependencies between all support departments. By using simultaneous equations or iterative processes, it captures the mutual services provided by each support department to every other department, ensuring that the final costs allocated to operating departments reflect the true consumption of resources.

Production and operating departments are considered value-adding units because they are directly involved in the transformation of inputs into finished goods or the delivery of services. These departments perform the core activities that customers are willing to pay for, thereby directly enhancing the market value of the final output.

The incremental cost allocation method ranks cost objects based on their priority or responsibility. The primary user is allocated the costs they would incur if they were the only user, while subsequent users are allocated only the additional (incremental) costs they cause. This approach is useful for prioritizing resource usage and understanding the marginal impact of adding new users to a shared service.

A revenue object is any entity—such as a specific product line, a business division, or a customer segment—for which a separate measurement of revenue is desired. Identifying revenue objects is essential for management accounting, as it allows businesses to analyze profitability, track performance, and make informed strategic decisions regarding the allocation of resources to the most productive areas of the organization.

The dual-rate cost-allocation method separates support department costs into fixed and variable pools. This allows for more accurate allocation, as variable costs are typically allocated based on actual usage, while fixed costs are often allocated based on budgeted or capacity-based usage, providing a more precise reflection of how costs are incurred by user departments.

The step-down method (also known as the sequential allocation method) recognizes that support departments provide services to other support departments as well as to operating departments. It allocates costs in a specific sequence, ensuring that once a support department's costs are allocated, they are not re-allocated back to it, providing a more comprehensive view than the direct method.

The direct method is the simplest approach to cost allocation, where support department costs are allocated directly to operating departments without recognizing any services provided between support departments. While it is easy to implement and understand, it may be less accurate than other methods because it ignores the interdependencies that often exist between different support units within a complex business organization.