Measuring profit at the segment level is important for managerial and strategic insight. It helps companies:
Identify high-performing segments
Understand which divisions drive the most profitability.
Spot underperforming areas
Highlight segments with declining margins or low returns.
Improve capital allocation
Invest more in profitable lines and reduce resources in weak areas.
Enhance pricing strategy
High-cost or low-margin segments may require pricing adjustments.
Support strategic decisions
Useful in M&A planning, divestments, market entry, and product launches.
Boost accountability
Segment managers are evaluated on transparent financial metrics.
Segment Margin (Gross / Operating)
Segment profitability is often measured using segment margins:
1. Segment Gross Margin
Formula:
(Segment Revenue – Segment COGS) ÷ Segment Revenue
Shows how efficiently a segment produces goods or delivers services.
2. Segment Operating Margin
Formula:
(Segment Operating Profit ÷ Segment Revenue)
Includes direct operating expenses like marketing, salaries, and distribution.
High margin segments indicate strong pricing power, cost efficiency, or product differentiation.
Return on Segment Assets / Capital
Two key return ratios help assess how effectively a segment uses resources:
1. Return on Segment Assets (ROA)
Formula:
Segment Profit ÷ Segment Assets
Evaluates how productively a segment uses its asset base.
2. Return on Segment Capital (ROIC)
Formula:
Segment NOPAT ÷ Segment Invested Capital
Essential for capital-intensive industries such as manufacturing or telecom.