What it means
Research and development covers the cost of inventing and improving what a company sells: engineers, scientists, prototype materials, testing and the software teams building new features. Dividing that spending by revenue converts it into a comparable ratio, so a small company spending $3 million and a large one spending $300 million can be judged on the same scale.
The ratio is often called R&D intensity. What counts as normal varies enormously by industry, and comparing across sectors is meaningless.
Enterprise software companies often run between 15% and 25%, pharmaceutical companies can go higher, and a food distributor or a construction firm might spend under 1%. The only useful comparisons are against direct competitors and against the company's own history.
The ratio is a spending measure, not a productivity measure. A company can spend 20% of revenue on R&D and produce nothing customers want, while a competitor spending 12% produces a hit.
Boards therefore pair the ratio with output measures such as revenue from products launched in the last three years, which tells you whether the money is actually turning into sellable products. Accounting treatment affects the number and needs checking before comparisons are made.
Some development costs can be capitalised, meaning they are recorded as an asset and amortised over later years rather than expensed immediately, which lowers the reported R&D expense and flatters current profit. When comparing two companies, it is worth checking whether both expense their development costs or one capitalises a chunk of them.
The ratio also moves for reasons that have nothing to do with R&D decisions. If revenue falls while the engineering team stays the same size, the ratio rises and looks like increased commitment when it is really just a smaller denominator.
Reading the absolute dollar spend alongside the ratio avoids that trap.
In practice
Real-world examples.
Example
A medical device company reports an R&D expense ratio of 12% while its two closest competitors run at 8% and 9%. Management explains the gap in its annual report by pointing to two pipeline products in clinical testing, and analysts accept the higher ratio as a temporary investment phase.
Example
A listed games publisher sees its ratio jump from 14% to 21% after a weak release year. The engineering headcount barely changed, so the rise reflects the fall in revenue rather than any new commitment, and the board asks for the absolute figures alongside the ratio in future reporting.
Example
A private equity firm reviewing an industrial sensor manufacturer finds R&D at 3% of revenue against a sector norm nearer 7%. It builds an increased R&D budget into its investment plan, treating the underinvestment as the reason the company's product line has aged.
Think of it
“R&D expense ratio shows what percentage of revenue you invest in innovation-your commitment to future products.
Formula
Calculation
R&D Expense Ratio = (R&D expense / revenue) x 100.
Take a mid-sized software company reporting revenue of $120 million for the year and R&D expense of $18 million. R&D Expense Ratio = ($18 million / $120 million) x 100 = 15%.
Now compare it with a smaller competitor reporting revenue of $90 million and R&D expense of $9 million. That competitor's ratio = ($9 million / $90 million) x 100 = 10%. The first company is investing half as much again per dollar of revenue, and in absolute terms it is spending $18 million against $9 million, which is twice as much engineering capacity chasing the same market. Whether that is wise depends on whether the extra $9 million produces products customers pay for.Case study
Seen in the real world.
Corvid Systems is a fictional, illustrative network hardware company with $200 million of revenue. Under pressure to improve margins ahead of a sale, its management cut R&D from $24 million to $12 million, taking the ratio from 12% to 6% and adding $12 million straight to operating profit.
The immediate effect was exactly as intended: profit rose, the margin looked healthier and the story told well. Two years later, with no significant product refresh, revenue had slipped to $170 million as customers moved to competitors with newer hardware, and the R&D ratio at the unchanged $12 million of spending had drifted back up to 7.1% purely because revenue had fallen.
In this illustrative example the buyers who eventually looked at Corvid discounted the improved margin heavily, because they could see the profit had been bought by deferring investment. The point is that the R&D expense ratio is one of the easiest metrics to improve in the short term and one of the most expensive to have improved the wrong way.
Watch out
Common mistakes.
- Comparing the ratio across different industries. A 3% ratio is high for a distributor and alarmingly low for a pharmaceutical company, so the benchmark must come from direct competitors.
- Treating a rising ratio as automatically good news. It rises when revenue falls just as readily as when spending increases, so the absolute spend needs to be read alongside it.
- Assuming a higher ratio means better products. The ratio measures money going in, not results coming out, and R&D productivity varies hugely between companies spending identical amounts.
Questions
People also ask.
Should capitalised development costs be included?
For comparability, yes, add back capitalised development spending so that two companies with different accounting policies can be compared on the same basis.
What is a healthy R&D expense ratio?
There is no universal figure, but a useful rule is to sit within a few percentage points of your closest competitors unless you can explain clearly why you should not.
Does R&D spending have to appear as an expense?
Not always, since accounting rules allow certain development costs to be capitalised once a project meets specific criteria, which is why the notes to the accounts matter.
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