SG&A Expenses Explained: What's Included, How to Analyze It, and Operating Leverage

May 9, 2026 · guides · 10 min read

SG&A Expenses Explained: What's Included, How to Analyze It, and Operating Leverage

Every income statement tells a story. Revenue at the top, net income at the bottom, and a series of cost lines in between that explain exactly how a company converts sales into profit. One of the most revealing lines in that story is SG&A, or selling, general and administrative expenses. Understanding what SG&A means, what belongs inside it, and how it behaves relative to revenue separates investors who skim income statements from those who actually understand a business.

This guide covers SG&A expenses explained from first principles: the definition, what costs are included, how to compare SG&A across industries, the distinction between fixed and variable components, and the connection to operating leverage.

What Is SG&A?

SG&A stands for selling, general and administrative expenses. It is the bucket on the income statement that captures the overhead costs required to run the business and sell its products, excluding the direct costs of producing those products.

On the income statement, the structure typically looks like this:

Revenue minus Cost of Goods Sold (COGS) = Gross Profit minus SG&A = Operating Income (EBIT, before interest and taxes)

Some companies break out Research and Development (R&D) as a separate line, while others roll it into SG&A. The treatment varies by industry and by management preference. Either way, SG&A represents the infrastructure cost of running the company rather than making the product.

What Is Included in SG&A

Selling Expenses

The selling portion covers everything required to get products or services in front of customers and close deals.

Sales force compensation is typically the largest selling expense item: base salaries, commissions, bonuses, and benefits paid to account executives, territory managers, and sales support staff. A company with a large direct sales team will carry a heavy selling expense load.

Marketing and advertising spend sits here as well. TV and digital advertising, content production, sponsorships, trade show presence, and public relations fees all flow through selling expenses. For consumer brands, this can be a dominant share of total SG&A.

Customer-facing costs such as order processing, shipping coordination (not the actual freight, which may sit in COGS), and customer success teams also belong in selling expenses.

General and Administrative Expenses

The general and administrative (G&A) half covers corporate infrastructure costs that are not directly tied to selling or production.

Executive compensation, including CEO, CFO, COO, and other C-suite salaries, bonuses, and stock-based compensation, is reported here. For some companies, stock-based compensation in G&A can be material enough to deserve its own scrutiny.

Finance and accounting functions, including the cost of the internal accounting team, external audit fees, and financial reporting costs, sit in G&A. Legal fees, including outside counsel for contracts, litigation, regulatory compliance, and intellectual property, also flow through G&A and can spike substantially in periods of active litigation.

Corporate real estate costs for office space, headquarters facilities, and related occupancy expenses belong in G&A. Information technology infrastructure supporting the corporate side of the business (as opposed to production systems) is included here as well.

Human resources, recruiting, training, and general corporate insurance round out the G&A bucket.

SG&A vs. COGS vs. R&D

These three line items are frequently confused. The distinctions matter because they reflect very different cost dynamics.

COGS (cost of goods sold) captures only the direct costs of producing what the company sells: raw materials, direct labor on the production floor, manufacturing overhead, and inbound freight on inputs. COGS moves in direct proportion to units produced. When revenue doubles, COGS roughly doubles.

SG&A is mostly fixed or semi-fixed in the short run. Rent, executive salaries, and the accounting team do not disappear when sales dip 10% in a quarter. This is what makes SG&A central to understanding operating leverage.

R&D (research and development) is the cost of developing future products, improving existing technology, or conducting scientific research. For pharmaceutical companies, R&D can dwarf SG&A. For software companies, R&D often appears as a separate line because investors want visibility into the investment in product development. For industrial companies, R&D may be small enough that it folds into SG&A.

A company that buries R&D inside SG&A rather than breaking it out separately is obscuring useful information. Analysts often adjust for this when comparing research intensity across companies.

SG&A as a Percentage of Revenue: Industry Benchmarks

The most useful way to evaluate SG&A is to express it as a percentage of revenue, known as the SG&A ratio. This normalizes for company size and enables apples-to-apples comparison across companies and over time.

The appropriate SG&A ratio varies enormously by industry. Here are representative ranges:

Software and SaaS companies typically run SG&A ratios of 30% to 60% of revenue, especially in growth phases. Heavy investment in sales teams, customer acquisition, and brand building is characteristic of software businesses trying to establish market position. A SaaS company with 45% SG&A is not inefficient by default. It may be investing heavily in growth.

Consumer packaged goods companies tend to run SG&A ratios of 15% to 30%. Much of this is brand advertising. Companies like major household product manufacturers spend aggressively on marketing to protect shelf space and consumer awareness.

Financial services firms, including banks and insurance companies, typically run SG&A in the 40% to 60% range when including overhead and compensation-heavy cost structures.

Industrial and manufacturing companies, which have high COGS and often sell through distributors rather than large direct sales forces, typically run SG&A of 5% to 15%.

Retail companies tend to run SG&A of 20% to 35%, covering store operations, logistics coordination, and marketing.

The key insight: there is no universal good or bad SG&A ratio. A 45% SG&A ratio at a hypergrowth SaaS company may be more efficient than a 20% ratio at a mature industrial company, depending on what each dollar of SG&A is generating in future revenue.

Fixed vs. Variable Components of SG&A

Not all SG&A moves the same way when revenue changes. Understanding which components are fixed and which are variable is essential for forecasting margins and evaluating management quality.

Fixed SG&A components are costs that do not change materially with revenue volume in the short run. These include: executive salaries and corporate overhead, office leases and facility costs, the accounting and legal function at steady state, and IT infrastructure for corporate systems. A company cannot cut its CFO salary by 10% when revenue misses by 10%.

Variable SG&A components scale with revenue or with sales activity. Sales commissions are the clearest example: they typically represent a fixed percentage of sales closed. Performance-based marketing spend (cost-per-click, affiliate fees, sales incentive programs) can also be largely variable. Some customer support costs scale with customer volume.

Semi-variable SG&A components are costs that have a fixed base but flex upward as the business grows. The sales team is a good example. A company needs a minimum sales force to cover its territory, but adding sales reps to expand capacity is a deliberate growth investment, not a purely automatic cost.

When analyzing SG&A, try to estimate the fixed base (the minimum run rate required to operate) versus the variable or discretionary layer on top. A company with a high fixed-cost SG&A structure is exposed to margin compression when revenue declines but stands to gain significant operating leverage when revenue grows.

SG&A and Operating Leverage

Operating leverage describes how a change in revenue translates to a more-than-proportional change in operating income (EBIT). SG&A is the primary driver of operating leverage for most businesses.

Here is how the mechanics work with a simple numerical example.

Assume Company A has:

Now assume revenue grows 20% to 120 million dollars.

Revenue grew 20%. Operating income grew 60%. The operating margin expanded from 15% to 20%. That is operating leverage at work.

The leverage came entirely from the fixed SG&A base being spread over a larger revenue base. Each additional dollar of revenue only had to cover variable COGS and variable SG&A. The fixed overhead was already paid.

The degree of operating leverage (DOL) in this example is 3x: a 1% increase in revenue produced roughly a 3% increase in operating income. A high fixed-cost SG&A structure amplifies both upside and downside.

Now run the scenario in reverse. Revenue falls 20% to 80 million dollars.

A 20% revenue decline produced a 60% decline in operating income. Operating leverage is symmetric. It punishes revenue declines just as aggressively as it rewards revenue growth.

This is why investors scrutinize SG&A structure carefully in cyclical industries and at companies that are growing into their cost base.

Analyzing SG&A Efficiency Trends Over Time

A single SG&A ratio snapshot tells you relatively little. A trend across multiple quarters or years tells you a great deal.

SG&A declining as a percentage of revenue over time is a signal of operating leverage being realized. The company is growing revenue faster than it is adding overhead. This is the pattern investors look for in maturing software businesses: revenue growing 30% annually while SG&A grows only 10% to 15%, producing sustained margin expansion.

SG&A increasing as a percentage of revenue while the company is not in an explicit growth investment phase is a warning sign. It may indicate cost discipline problems, management bloat, or the need to spend more to generate each dollar of revenue.

SG&A flat as a percentage of revenue across multiple years is common in stable businesses with limited operating leverage. Their cost structure is largely variable, or management consistently adds overhead in line with revenue.

Look at SG&A per employee as a productivity proxy. If SG&A is rising materially but headcount is not, something else is driving costs. Legal disputes, rising executive compensation, or facility expansion deserve investigation.

Compare SG&A trend to gross margin trend. A company can have expanding gross margins and contracting operating margins if SG&A is rising fast enough. The two should be analyzed together, not in isolation.

Common Misuse: Burying Costs in SG&A

SG&A is one of the more flexible line items on the income statement. Management has discretion over what gets classified where, which creates both intentional and unintentional misrepresentation.

One common issue is burying costs in G&A that arguably belong in COGS. This inflates gross margin (which analysts watch closely) while keeping operating margin roughly unchanged. A software company that classifies customer success costs in G&A rather than COGS may show a 75% gross margin when an accurate classification would show 68%. This matters enormously for valuation comparisons.

Another issue is capitalizing costs that belong as period expenses. A company that capitalizes internal software development costs related to selling its product, rather than expensing them through SG&A, reduces reported SG&A but creates an asset on the balance sheet that will eventually need to be amortized. The expense does not disappear. It is deferred.

Stock-based compensation (SBC) folded into SG&A is frequently cited as a cost that management highlights as non-cash. While it is true that SBC does not reduce cash in the period, it dilutes shareholders and represents real economic compensation. Treat SBC inside SG&A as a real cost when evaluating normalized profitability.

One-time restructuring charges, severance costs, and impairments occasionally route through SG&A as well. These should be identified and evaluated on their own merits rather than buried in the trend analysis.

R&D vs. SG&A in Technology Companies

For technology and pharmaceutical companies, the boundary between SG&A and R&D is important to track separately.

A software company might report two distinct cost lines below gross profit: R&D and Sales and Marketing, with G&A separate. Alternatively, it might combine all three into a single SG&A figure. The more granular presentation enables investors to see what the company is investing in product versus what it is spending on sales and overhead.

In pharmaceutical companies, R&D can represent 15% to 25% of revenue and deserves its own analysis. A pharma company with declining R&D spend relative to revenue may be harvesting its existing pipeline without replenishing it. That is a warning for future revenue sustainability.

In early-stage software companies, R&D intensity relative to revenue signals whether the company is investing in product differentiation or relying on sales and marketing to drive growth. A company spending 40% of revenue on R&D and 20% on sales and marketing has a fundamentally different strategic profile than one spending 10% on R&D and 50% on sales and marketing, even if total SG&A plus R&D looks similar.

When two companies report SG&A with different R&D treatment, normalize them before comparing ratios. Strip out disclosed R&D from both and compare apples to apples.

How Management Guides SG&A

In earnings calls and investor presentations, management regularly provides forward guidance on SG&A. Understanding what they are telling you, and what they are obscuring, is a useful skill.

When management says SG&A will be flat in absolute dollars, that means they expect operating leverage if revenue grows. A 10% revenue increase with flat SG&A produces meaningful margin expansion.

When management says SG&A will increase in line with revenue, they are signaling no operating leverage in the near term. The business is investing at the same rate it is growing.

When management references SG&A efficiency improvements, look for the mechanism. Are they reducing headcount? Consolidating facilities? Moving to lower-cost markets? Cutting discretionary marketing? Each has different implications for future growth and customer acquisition capacity.

Be cautious when management separates stock-based compensation from SG&A in their adjusted metrics. Non-GAAP operating income often excludes SBC. This is a legitimate analytical lens, but it should not be the only one used. Check both GAAP and non-GAAP SG&A to understand the full cost picture.

Pay attention to commentary on SG&A in the context of revenue outlook. A company guiding to strong revenue growth while also guiding to SG&A growth below that rate is explicitly forecasting margin expansion. Hold them accountable to it in subsequent quarters.

Pulling It Together

SG&A expenses are not just overhead. They are a window into how a business is managed, what strategic bets are being made, and how efficiently the company converts revenue growth into profit.

A rising SG&A ratio during a deliberate growth investment phase is not a red flag. A rising SG&A ratio in a mature company with flat revenue is. A declining SG&A ratio in a company scaling past its fixed cost base is one of the clearest signs of operating leverage being realized.

The best analysts do not treat SG&A as a single line to be glanced at. They decompose it into fixed versus variable components, track the trend across years, compare it to peer ratios with R&D normalized out, flag classification choices that distort gross margin, and check whether management guidance on SG&A has historically been accurate.

When you know how to read SG&A, you are reading the business, not just the income statement.

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