Operating Margin
An accounting profitability ratio whose interpretation depends on operating-income definitions, expense classification, and business model.
Operating margin is commonly calculated as operating income divided by revenue. It summarizes reported operating profit relative to revenue before selected financing and tax items, but definitions can differ and the ratio does not by itself measure cash flow, risk, or enterprise value.
Frequently Asked Questions
What is included in operating income?
Treatment of restructuring, stock-based compensation, acquisition costs, impairments, leases, and other items can differ across companies and adjusted measures. Use reconciled and consistently defined figures.
What happens when revenue is zero or negative?
Operating margin is undefined at zero revenue and often not useful with negative revenue. Review operating loss, cash burn, unit economics, and the underlying accounting instead.
Is improving operating margin always positive?
Not necessarily. Improvement may come from scale or pricing, but also from reduced investment, cost reclassification, temporary cuts, mix shifts, or one-time items. Sustainability and revenue quality matter.
What is a good operating margin?
There is no universal percentage. Capital intensity, competitive structure, accounting policies, maturity, cyclicality, and regulation differ. Compare close peers and multi-period trends using consistent definitions.