A business gross margin is a rough gauge of how profitable its operations are it measures how much sales revenue the company retains after all the direct costs associated with making a product or providing a service are accounted for direct costs refer to materials labor and expenses related to producing a product overhead expenses such as management salaries and the cost of building a corporate headquarters are not direct costs the greater of business margin the more money it will have to invest in other important areas such as marketing and research gross margin is generally quoted as a percentage of the company sales just take revenue generated for a given period subtract the production expenses otherwise known as the cost of goods sold and divide this entire figure by revenue let's take a look at Rose candy company the company earns annual revenue of 1 million dollars and has a cost of goods sold totaling $700,000 this gives the company a gross margin of 30% this means that Rose candy retains 30 cents from each dollar of total revenue made say that Rose candies main competitor Lilly chocolate enjoys a margin of close to 40 percent this could mean that Lilly chocolate has lower input costs such as raw materials and wages for its factory workers it could also mean that Lilly chocolate gets away with selling and higher prices by offering specialty items in either case Rose candy will likely want to adjust its strategy to remain competitive in the long run while it doesn't give an investor the whole picture when it comes to profitability gross margin is extremely useful as a yardstick to make sure that a company is operating with maximum efficiency.