SG&A stands for Selling, General, and Administrative expenses, the operating costs a business incurs that are not directly tied to producing its product or service. It covers everything from sales commissions to the CEO's salary to office rent, sitting on the income statement below gross profit and above operating income.
What is excluded matters just as much. Cost of goods sold, the direct cost of producing what was sold, stays out of SG&A entirely. Research and development is also frequently broken out as its own separate line rather than folded into SG&A, particularly for technology and pharmaceutical companies where R&D spend is a figure investors specifically want to see isolated.
This distinction is why gross margin and operating margin tell different stories. A business can have strong gross margin, meaning it produces efficiently, while still posting weak operating margin because SG&A is too high relative to revenue, an overhead problem rather than a production problem.
These terms are frequently used interchangeably, and in many income statements they are the same thing. Where a distinction exists, operating expenses is sometimes used as the broader category, including SG&A plus other operating items like depreciation, while SG&A refers specifically to the selling and administrative costs described above. In practice, most financial statements use one term consistently rather than drawing a hard line between them.
FORMULA
SG&A Ratio = SG&A Expenses ÷ Revenue
EXAMPLE
A business with $2,400,000 in revenue and $432,000 in SG&A expenses.
SG&A Ratio = $432,000 ÷ $2,400,000 = 18%.
18 cents of every revenue dollar goes toward selling, general, and administrative costs.
A declining SG&A ratio over time, revenue growing faster than SG&A, is a sign of operating leverage: the business is scaling without proportionally growing its overhead. A rising ratio can mean overhead growth has outpaced revenue, or it can simply reflect a deliberate investment phase, such as building out a sales team ahead of the revenue it will eventually generate. The ratio alone does not distinguish between the two; the trend and the context around it do.
SG&A is one of the categories most prone to inconsistent coding, precisely because it covers such a wide range of cost types. A software subscription might get coded to IT expense by one person and office supplies by another; a consultant's invoice might land in professional fees or in the department that requested the work, depending on who processes it.
This inconsistency does not change total SG&A, but it does distort the sub-categories within it, which is exactly the detail management needs to see where overhead is actually concentrated and trending. A chart of accounts and coding policy that is actually followed consistently, invoice after invoice, is what keeps SG&A reporting useful rather than just directionally correct.
