What to Do
The formula for ROS is simply:
For example, if a business makes $150 on a sale worth $950, ROS is:
What You Need to Know
- Although it’s a handy, straightforward measure, ROS does not reveal any information about sales costs, or contributing factors like overheads (including admin, sales and production), labor or materials.
- One version of ROS takes operating profit before deduction of interest and tax; another after deductions. It doesn’t make much difference which one is used—although the former will produce a higher ratio—provided that like is compared with like.
- Operating profit may include unusual items or allowances that affect ROS, which could mislead an unwary investor.
- ROS varies greatly depending on the sector concerned. For instance, supermarkets depend on high volume sales and will consequently tend to report lower returns.
- ROS has long been a significant ratio in the retail sector, where companies use it to compare their own performance with that of competitors and the industry as a whole.
Where to Learn More
Web Site:
Investopedia: www.investopedia.com






