Page 83 - BA2 Integrated Workbook - Student 2017

Marginal and absorption costing

4.4 Reconciling marginal and absorption costing profits

 If inventory levels increase, absorption costing gives the higher profit.

This is because in absorption costing, fixed overheads held in closing inventory
are carried forward to the next accounting period instead of being written off as
a period cost in the current accounting period as in marginal costing.

 If inventory levels decrease, marginal costing gives the higher profit.

This is because fixed overhead brought forward in opening inventory is
released, thereby increasing cost of sales and reducing profits.

 If inventory levels are constant, both methods give the same profit.

Example:

A company produced 3,000 units of their only product in the last period. The unit
costs of the product were:

$
Direct material 20
Direct labour 15
Variable production overhead 8
Fixed production overhead 11
–––
Total production cost 54
–––
The sales for the period were 2,500 units.

Absorption costing profit has been calculated as $40,000.

$
Absorption costing profit 40,000
Change in inventory × OAR (500 × 11) 5,500
––––––
Marginal costing profit 45,500
––––––

TYU 3

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