Use the total revenue. Total revenue is almost always higher than sales revenue because it is the cumulation of all revenue generating channels of a company. Marginal Revenue Youtube Calculate the total revenue. . Before you calculate marginal cost you should understand change in costs and change in quantity. For a business with economies of scale producing each additional unit becomes cheaper and the company is incentivized to reach the point where marginal revenue equals marginal cost. The formula above breaks this calculation into two parts. Sales marketing customer success and investments. Total revenue is all income generated from the total sales of goods and services regardless of revenue source. When it comes to running a business the list of expenses to track is endlessYou need to know the cost of payroll marketing supplies rent commissions and the cost of goods sold among others. As long as margin...