incremental gross margin

The gross profit margin earned on each additional dollar of revenue generated above a baseline.

Incremental gross margin measures the profitability of a company's additional sales. It reveals how much of each new dollar of revenue flows directly to gross profit after accounting for the variable costs required to produce those additional units. Unlike the standard gross margin, which reflects the average profitability of all historical sales, the incremental metric focuses strictly on the efficiency of the company's latest expansion. This metric is highly valuable to investors because it highlights operating leverage at the production level. If a company has high fixed manufacturing costs but low variable costs, its incremental gross margin will be very high. As sales grow, overall profitability expands rapidly because the fixed costs are already covered by baseline sales. Conversely, if incremental margins are low, scaling the business will not yield significant profit expansion. Investors must monitor this metric to detect shifts in pricing power or rising input costs. A declining incremental gross margin suggests that the cost to produce each new unit is rising faster than the selling price, which can eventually drag down the company's overall gross margin. Conversely, rising incremental margins indicate that the company is achieving economies of scale or successfully raising prices on new business.

Company A increases its revenue from $10,000,000 to $12,000,000, representing a change in revenue of $2,000,000. To support these new sales, its cost of goods sold (COGS) increases from $6,000,000 to $6,500,000, representing a change in COGS of $500,000. Its incremental gross margin is ($2,000,000 - $500,000) / $2,000,000 = 0.75, or 75%.