Stock-based compensation to revenue measures what percentage of a company's revenue is consumed by stock-based compensation expense. It is calculated by dividing trailing twelve-month SBC by trailing twelve-month revenue. This metric is especially important for technology companies, where SBC can be a major expense that significantly reduces the earnings available to existing shareholders through dilution.
A ratio above 10% means more than 10 cents of every revenue dollar goes to equity compensation. For mature technology companies, 5-15% is typical. For high-growth startups, 20-30% is not uncommon but raises questions about how much of the company's growth is being captured by employees versus existing shareholders.