What is return on investment (ROI)?
ROI is a ratio. Take what the investment returned, subtract what it cost, divide by what it cost, and express the result as a percentage. A campaign that cost two hundred thousand and generated five hundred thousand in attributable margin returned a hundred and fifty percent. The formula is simple; the arguments are about what counts as the return and over what period. For a direct-response ad the return is sales attributed to it this month. For a brand film it is harder: the return may be awareness, consideration, pricing power or a relationship that pays off over years, none of which fits neatly into the numerator.
In agency finance the term is also used internally: the ROI on a hire, a piece of equipment, a pitch, a product the agency builds for itself.
Why it matters
Why ROI matters
Marketing is spending, and every spend has to be defended to someone. ROI is the language that defense is conducted in, which is why agencies that can speak it keep their budgets and agencies that cannot lose them to channels that can. It also disciplines the work: a brief that states what return is expected, and how it will be measured, produces sharper creative than one that asks for something great. The danger is the opposite: work judged only on short-term ROI drifts toward whatever is easiest to measure, which is rarely the thing that builds a brand.
ROI is a conversation, not a verdict, and the best clients and agencies agree on how it will be measured before the work starts.
In practice
How ROI works in practice
- 01
Agree the outcome first. Sales, sign-ups, store visits, search volume, a lift in a brand metric measured before and after. Then agree the attribution: how the result will be connected to the work, whether through tracked links, promo codes, matched-market tests, a brand study or a modeled estimate. Then agree the window: a week for a performance ad, a quarter or a year for a brand campaign. The cost side includes everything: production, media, the agency fee.
- 02
After the work runs, the return is measured against the agreed outcome and window, the ratio is calculated, and the result is read alongside what cannot be counted: the earned coverage, the creative recognition, the way the sales team now has something to show. Over several campaigns, the pattern is what matters; a single ROI figure is one data point with a lot of assumptions inside it.
At RIOT
ROI at RIOT
We would rather talk about what the work did than about a ratio with assumptions in it, and sometimes the two are the same thing. The launch film we made for e.l.f. Mirror Mix reached about five million views. What that was worth to the brand is a calculation only they can make, which is the honest answer to most ROI questions: the agency can make the work travel; the client holds the numbers that say what the travel was worth.
Watch out
What people get wrong about ROI
Counting only what is easy to count. A film judged on click-throughs is being judged on the one thing it was not made for. The second mistake is attributing everything to the last touch, which flatters performance media and starves the brand work that made the click possible. The third is measuring too soon: brand effects arrive over quarters, and an ROI read at two weeks is a read of the media plan, not the creative.
