Measurement

Incrementality: are your ads actually driving new revenue?

The most expensive number in advertising is the sale you would have made anyway. Incrementality is the discipline of telling real growth apart from credit-grabbing.
Low Digital · 6 min read
The short version
  • A large share of reported revenue is demand you already owned, mostly people searching your brand who would have bought regardless.
  • Incrementality asks the harder question: what extra happened because the ad ran?
  • Separating brand from non-brand, and testing properly, is how you stop paying to harvest your own demand.

The sale you would have made anyway

Someone types your brand name into Google, clicks your ad, and buys. The platform records a tidy return and everyone nods. But that customer was already coming to you. The ad did not create the sale, it just put a toll booth in front of a door that was already open.

Paying to capture demand you already own can be worth it, to keep a competitor out of the auction for instance, but it is not growth. Confusing the two is how budgets get wasted while the dashboards look healthy.

Brand is not the same as growth

The clearest first step is to separate the two kinds of demand and stop letting one flatter the other.

Two very different kinds of demandWhere the real growth hidesBrandPeople already searchingfor you by nameNon-brandPeople discovering youfor the first timeBrand harvests demand you own. Non-brand is where genuine growth comes from.

We split brand from non-brand so the incremental growth is visible and can be scaled on its own merits.

How we measure what is genuinely new

Beyond splitting brand from non-brand, we look at new-customer acquisition rather than total orders, and where the budget justifies it we run holdout or geo tests: deliberately withholding spend from one group to see what actually changes. It is more work than reading a dashboard, but it answers the only question that matters, which is whether the spend made anything happen that would not have happened anyway.

Why it changes the budget

Once you can see what is incremental, the money moves. Less goes to harvesting demand you already had, more goes to creating demand you did not. The reported return might look lower on paper, because it is no longer double-counting easy wins, but the business actually grows.

The proof: Pirates Adventure

~7x
Incremental revenue growth
30x+
Return on ad spend
Non-brand
Genuinely new demand

Want to know what is real growth?

We will help you measure what is genuinely incremental, and spend behind it.

Book a strategy call