What it means
SG&A covers salaries for sales, marketing, finance, human resources and management, plus rent, insurance, software, professional fees and travel. It deliberately excludes the direct cost of producing goods or delivering services, which sits in cost of sales instead.
The ratio matters because these costs are largely fixed in the short term. When revenue dips, SG&A does not fall with it, so the percentage jumps and profit is squeezed from both directions at once.
Typical levels vary enormously by sector, so the number is only meaningful in context. Software companies often run SG&A at 40% or more of revenue because sales and marketing are their main investment, while grocery distributors may sit in the low teens because their costs live in inventory instead.
The most useful way to read the ratio is as a trend over several periods, not as a single figure. A business scaling well should see the percentage drift downwards as revenue grows faster than headcount and premises, which is the practical meaning of operating leverage.
One nuance is that companies classify costs differently, so a comparison against a competitor can mislead if one of them puts customer support in SG&A and the other puts it in cost of sales. Always check the accounting policy note before drawing conclusions about who is leaner.
In practice
Real-world examples.
Example
A specialty coffee roaster sees revenue flat at $12,000,000 while SG&A climbs from $2,400,000 to $2,900,000 after opening a second office. The ratio rises from 20% to 24.2%, and the board asks for a hiring freeze until revenue catches up.
Example
A software firm reports SG&A at 52% of revenue and is criticised by analysts until it points out that 38 points of that are sales and marketing spend driving 45% growth. The board agrees to keep spending, but sets a target to bring the ratio below 45% within two years.
Example
A manufacturing group compares its 14% ratio with a competitor's 9% and discovers the competitor books all distribution costs in cost of sales. Once the two are restated on a like-for-like basis, the gap narrows to under 2 points.
Think of it
“SG&A ratio shows what percentage of revenue goes to sales, administration, and general overhead.
Formula
Calculation
SG&A to Sales Ratio = SG&A Expenses / Net Revenue x 100
Take a mid-sized commercial cleaning company with net revenue of $18,000,000 for the year.
Its SG&A adds up as follows: sales and marketing salaries of $1,400,000, head office and finance salaries of $900,000, rent and utilities of $600,000, software and IT of $250,000, insurance and professional fees of $300,000, and other administrative costs of $150,000.
Total SG&A: $1,400,000 + $900,000 + $600,000 + $250,000 + $300,000 + $150,000 = $3,600,000.
SG&A to sales ratio: $3,600,000 / $18,000,000 = 0.20, or 20%.
If the following year revenue grows to $21,600,000 while SG&A rises only to $3,900,000, the ratio falls to $3,900,000 / $21,600,000 = 18.1%. That improvement of nearly 2 percentage points is worth about $400,000 of extra operating profit compared with holding the ratio flat.Case study
Seen in the real world.
The following is an illustrative, fictional scenario. Halberd Instruments made laboratory testing equipment and had grown revenue from $22,000,000 to $31,000,000 over four years. Management was pleased until a new finance director charted SG&A to sales and showed that the ratio had crept from 19% to 26% over the same period.
Digging into the detail, the pattern was not one big overspend but many small ones: three overlapping software subscriptions, a second leased office kept on after a reorganisation, and an administrative headcount that had grown by 40% while revenue grew by 41%, meaning no efficiency had been gained at all despite the extra scale.
Halberd set a simple target of returning to 21% within two years without cutting the sales team. It exited one lease, consolidated the software estate, and held administrative headcount flat while revenue continued to grow. The ratio hit 21.4% at the end of year two, adding roughly $1,400,000 to operating profit.
Watch out
Common mistakes.
- Comparing the ratio across industries as though a low number is always better, when a software company and a wholesaler simply have different cost structures.
- Including direct production or delivery costs in SG&A, which inflates the ratio and makes gross margin look artificially healthy at the same time.
- Cutting sales and marketing to improve the ratio in the short term, then wondering why revenue growth stalls two quarters later.
Questions
People also ask.
What counts as a good SG&A to sales ratio?
It depends on the sector, but most established non-software businesses aim for somewhere between 10% and 25%, and the trend matters more than the level.
Does SG&A include research and development?
Usually not, since most companies report research and development as its own line so investors can see innovation spending separately.
Why does my ratio jump in a bad quarter?
Because most SG&A is fixed in the short term, so when revenue falls the same overheads are spread across a smaller sales base.
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