Contribution Margin Income Statement Format
A Contribution Margin Income Statement has the same information as a more traditional income statement but presented in a format which allows a business to understand which profit center (i.e. segment, sector, department, division etc) its contribution margin comes from. It is for internal use only, and the exact format will depend on the business requirements.
It is important to understand that the contribution margin income statement relates to a particular profit center and that each line item refers to that center.
Contribution Margin Income Statement Example
A typical contribution margin income statement will have the following format:
| Revenue | 100,000 |
| Variable costs | 45,000 |
| Contribution margin | 55,000 |
| Controllable fixed costs | 30,000 |
| Controllable margin | 25,000 |
| Non controllable fixed costs | 10,000 |
| Contribution by profit center (CPC) | 15,000 |
| Untraceable costs | 5,000 |
| Operating income | 10,000 |
The following definitions are generally used in the contribution margin income statement:
Variable costs
All variable costs are included, these might include production, selling, and administration variable costs.
Controllable fixed costs
Controllable fixed costs are those which the manager of a profit center can control, for example advertising and marketing costs.
Non controllable fixed costs
Non controllable fixed costs are those which the profit center manager cannot control such as depreciation and tax.
Untraceable costs
Untraceable costs are those which cannot be identified with a particular profit center, for example head office costs might be allocated to a profit center, but are not directly traceable to it.
Uses of the Contribution Margin Income Statement
Contribution Margin
The contribution margin shows the revenue less the variable costs of the profit center. The contribution margin indicates whether a profit center can control its variable costs and make a profit.
It is useful to compare contribution margins to decide which profit centers should remain in operation and which should be closed.
Controllable Margin
The controllable margin is the contribution margin less the controllable fixed costs. As all the costs included are controllable by the profit center manager, it is a useful measure to evaluate the managers performance.
Contribution by Profit Center
The contribution by profit center sometimes referred to as CPC or as Segment margin, is a measure of the profitability of the profit center after deducting all costs traceable to it.
Since it includes non controllable fixed costs, it is a useful measure of the overall performance of the profit center in the longer term.
About the Author
Chartered accountant Michael Brown is the founder and CEO of Double Entry Bookkeeping. He has worked as an accountant and consultant for more than 25 years in all types of industries. He has been the CFO or controller of both small and medium sized companies and has run small businesses of his own. He has been a manager and an auditor with Deloitte, a big 4 accountancy firm, and holds a BSc from Loughborough University.