# Exercise-2: Distribution of service department expenses using step down method

SK Company has three service departments and four production departments. The information for the month of November is given below:

SK Company uses the following order and bases for the allocation of service department expenses to production departments:

1. Service department 1; allocation base is “square feet of area occupied”.
2. Service department 2; allocation base is “number of employees”.
3. Service department 3; allocation base is “investment in equipment”.

Required: Distribute the expenses of service departments on the basis of above information using step down method.

## Solution

Under step down method of cost allocation, the cost of a service department is allocated to other service departments as well as to production departments; however once a department’s expenses have been allocated, no expenses are assigned back to it.

### Computation of distribution rates:

The distribution rates for service departments are computed by dividing distributable expenses of each service department by the applicable allocation or distribution base. The distributable expenses of a service department are equal to the actual expenses incurred by the department plus any expenses of other service departments allocated to it.

Service department 1:
Expenses to be distributed: \$12,000
Distribution rate: \$12000/24,000 sq ft.* = \$0.5 per sq ft.

*4,000 + 4,000 + 6,000 + 3,000 + 5,000 + 2,000 = 24,000 square feet

Service department 2:
Expenses to be distributed: \$10,000 + \$2,000 = \$12,000
Distribution rate: \$12000/200 employees* = \$60 per employee

*20 + 60 + 40 + 60 + 20 = 200 employees

Service department 3:
Expenses to be distributed: \$6,000 + \$2,000 + \$1,200 = \$9,200
Distribution rate: \$9,200/\$92,000* = \$0.1 per dollar of investment

*\$40,000 + \$20,000 + \$24,000 + \$8,000 = \$92,000

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