In: Accounting
Assign overhead using traditional costing and ABC. (LO 1, 2), AN EcoFabrics has budgeted overhead costs of $945,000. It has assigned overhead on a plantwide basis to its two products (wool and cotton) using direct labor hours which are estimated to be 450,000 for the current year. The company has decided to experiment with activity-based costing and has created two activity cost pools and related activity cost drivers. These two cost pools are cutting (cost driver is machine hours) and design (cost driver is number of setups). Overhead allocated to the cutting cost pool is $360,000, and $585,000 is allocated to the design cost pool. Additional information related to these pools is as follows.
Wool Cotton Total
Machine hours 100,000 100,000 200,000
Number of setups 1,000 500 1,500
Instructions a. Determine the amount of overhead assigned to the wool product line and the cotton product line using activity-based costing.
b. What amount of overhead would be assigned to the wool and cotton product lines using the traditional approach, assuming direct labor hours were incurred evenly between the wool and cotton? How does this compare with the amount assigned using ABC in part a?
Answer (a)
Allocation of Overheads under Activity Based Costing
Statement of Cost Pool under ABC Costing
Cost Pool |
Amount |
Cost Driver |
Quantity |
Cost Per Driver |
Cutting |
$ 360,000 |
Machine Hours |
2,00,000 |
$ 1.80 |
Design |
$ 585,000 |
Number of Setups |
1,500 |
$ 390 |
Statement of overhead Cost
Particulars |
Wool |
Cotton |
Total |
Machine Hours |
1,00,000 |
1,00,000 |
2,00,000 |
Cost per machine hour |
$ 1.80 |
$ 1.80 |
|
Cutting overheads (a) |
$ 1,80,000 |
$ 1,80,000 |
$ 3,60,000 |
Number of Setups |
1,000 |
500 |
1,500 |
Cost per setup |
$ 390 |
$ 390 |
|
Designing Overheads (b) |
$ 3,90,000 |
$ 1,95,000 |
$ 5,85,000 |
Total Overheads (a) + (b) |
$ 5,70,000 |
$ 3,75,000 |
$ 9,45,000 |
Notes:
Answer (b)
Calculation of overheads cost using Traditional Costing
For allocation of overheads under traditional costing, a single plantwide rate of overhead allocation will be used.
Single Plantwide rate = (Total Budgeted Overheads)/ (Total Budgeted Direct labour hours)
= $ 945,000/450,000 direct labour hours
= $ 2.10 per direct labour hour.
Since direct labour hours occur evenly between “Wool” and “Cotton”, out of the total direct labour hours of 450,000, each consume 225,000 direct labour hours.
Allocation of overheads to Wool (Under traditional costing)
Overhead allocated to Wool = (overhead cost per direct labour hour) X (Direct Labour hours consumed)
= $ 2.10 X 225,000 direct labour hours
= $ 4,72,500
Allocation of overheads to Cotton (Under traditional costing)
Overhead allocated to Cotton= (overhead cost per direct labour hour) X (Direct Labour hours consumed)
= $ 2.10 X 225,000 direct labour hours
= $ 4,72,500
Allocation of overheads under Activity Based Costing vis-a-vis Traditional Costing
Method of Allocation of Overheads |
Wool |
Cotton |
Total |
Overheads allocated under ABC |
$ 5,70,000 |
$ 3,75,000 |
$ 9,45,000 |
Overheads allocated under traditional costing |
$ 4,72,500 |
$ 4,72,500 |
$ 9,45,000 |
Conclusion: Activity Based Costing (ABC) is a latest method wherein overheads are allocated on the basis of activity consumed by each product. It is comparatively fairer than the traditional method of overhead cost allocation and results in justified cost determination and consequently profit of each product.
In the given question, burden of a share of overheads pertinent to “Wool” is borne by “Cotton” under traditional costing which will increase the cost per unit of “Cotton” and will not be a true measure of its profitability. On the contrary, under ABC overheads allocated to each product is based on its activity consumption and results in fair allocation. Since the number of setups for “Wool” is twice that of “Cotton”, double Setup overheads cost is allocated to “Wool” (i.e. $ 390,000) in comparison to “Cotton” (i.e. $ 195,000).