Traceable Fixed Cost
A fixed cost that is incurred because of the existence of a particular business segment and that would be eliminated if the segment were eliminated.
Common Fixed Cost
A fixed cost that supports more than one business segment, but is not traceable in whole or in part to any one of the business segments.
Segment margin
A segment’s contribution margin less its traceable fixed costs. It represents the margin available after a segment has covered all of its own traceable costs.
Dollar Sales for Company to break even
Trace Fixed Expense+Common Fixed Expense/Overall CM ratio
Dollar Sales for Segment to break even
Segment traceble fixed expense/segment cm ratio