An incremental cost-effectiveness ratio is a summary measure representing the economic value of an intervention, compared with an alternative (comparator).
Incremental cost is calculated by analyzing the additional expenses involved in the production process, such as raw materials, for one additional unit of production.
If incremental cost leads to an increase in product cost per unit, a company may choose to raise product price to maintain its return on investment (ROI) and to increase profit.
Examples of incremental costs include raw materials such as inventory, utilities, wages or direct labor that's only involved in production, and shipping and packaging.