Incrementality Testing for Your Business
Incrementality testing services answer one question that dashboards cannot: would these conversions have happened without the ad spend? Omeiro designs randomized holdout tests and geo-lift experiments, builds synthetic control groups, and reports the revenue your campaigns truly caused.
What incrementality testing looks at
The main areas we work through. The exact scope depends on your package and is agreed before we start.
Tags
- Tag manager setup
- Consent settings
- Test vs live
Events
- Key actions named clearly
- Forms and purchases
- Values passed
Links
- UTM rules
- Cross-domain
- Ad platform links
Reports
- Ready-made views
- Audiences
- Checks after launch
What we cover The exact scope depends on your package and your data, and is agreed before work starts.
What you get with incrementality testing
Measuring genuine ad lift. Geo-lift experiments, synthetic control groups, and randomized holdout tests identifying true incremental conversion revenue.
Basic Package
1 holdout or geo-lift test design with sample size and readout plan. 5-day delivery, 2 revisions.
Standard Package
Test design; analysis of 1 channel, synthetic control, lift report. 10-day delivery, 2 revisions.
Premium Package
3 channel experiments, iROAS results, budget recommendations; 30 days support. 20-day delivery, 2 revisions.
Clear brief first
We confirm what you need before work starts, so the scope is clear on both sides.
Revisions listed
Each package shows its revision rounds. A round is one list of changes sent together.
Yours once paid
Copyright of the final work passes to you once the order is paid in full.
Your data stays in your own accounts and tools wherever possible, and access is removed when the work is done.
How our incrementality testing works
Frame the hypothesis
We agree which channel, region or audience to test and what result would change your spending.
Design the experiment
Holdout groups or geo markets are chosen, with the sample size and test length needed to detect a real effect.
Run and monitor
We check that treatment and control stay comparable while the test is live.
Read the lift
Synthetic control analysis turns the data into incremental conversions, iROAS and a clear recommendation.
Why choose Omeiro for incrementality testing
You get a test plan with a sample size you can defend, a readout that a finance lead can follow, and incremental ROAS figures per channel instead of platform-reported credit.
In short
- Delivery in 5 to 20 days, by package.
- Fixed price, shown before you order.
- Paid media managers whose Meta and Google reports add up to more sales than the store recorded.
- Ecommerce brands that want geo lift testing before moving a large budget between channels.
- Copyright yours after full payment.
Incrementality Testing: common questions
How much does incrementality testing cost?
Prices are fixed and shown by package on our Incrementality Testing pricing page, so you see the full price before you order. You can also ask for a custom quote.
How long does geo lift testing take?
Delivery depends on the package: Basic 5-day delivery; Standard 10-day delivery; Premium 20-day delivery.
What is included in the Basic Package?
The Basic Package includes: 1 holdout or geo-lift test design with sample size and readout plan. Higher packages add more scope, revisions and support.
Can I get a custom marketing incrementality measurement package?
Yes. If none of the packages fits, use the custom package form on our pricing page to describe what you need, and our team sends you a fixed price.
How big does my ad budget need to be for a geo test?
It depends on how many markets you can split and how much sales volume each has. The Basic design includes a sample size calculation so you know before spending.
Is incrementality testing better than last-click attribution?
They answer different questions. Last-click shows who got credit, while a holdout or geo test shows what sales the ads actually added.
What data do I need to supply?
Sales or conversion history by date and region or audience, plus spend by channel. We confirm exact fields when you order.
Do I have to pause my ads for a holdout test?
Only for the holdout group, which is a slice of your audience or markets. The rest of your campaigns keep running.
Who owns the final work?
Copyright of the final work passes to you once the order is paid in full. Paid fonts, stock files or licences, if used, are licensed in your name.
Ready to start your incrementality testing?
Compare the packages and pick the one that fits. Not sure which? Write to us and we will help you choose.