Marginal cost is the cost of producing one additional unit. It indicates an incremental cost change.
Marginal Cost = Change in Total Variable Costs / Change in Quantity
Change in total cost is $40 and change in quantity is 1,000.
Marginal Cost = $40 / 1,000 = 0.04
Marginal Cost (MC) is 0.04.
- Wikipedia – Marginal Cost – Wiki entry on marginal cost. Includes information on how it is calculated and where it is used.
- Khan Academy – Marginal Revenue & Marginal Cost – Part of a larger course on microeconomics. This video details how marginal revenue and marginal cost are calculated, as well as what they are used for.
- ACDCLeadership (YouTube) – Marginal Cost and Average Total Cost – Micro 3.4 – A video explanation of the concept of marginal cost.