What is the difference between incrementality and attribution?

Attribution assigns credit for a conversion to whichever touchpoint a platform can claim. Incrementality measures whether the campaign drove the conversion at all, using a control group that did not see the ad. Attribution tells you where to take credit; incrementality tells you where to spend.

What does a CPG incrementality test look like?

Most brands start by picking one campaign — on one platform, in one flight — to baseline. InMarket sets up the test, establishes the matched control, and delivers weekly lift reads. No SKU integrations or panel onboarding required. Most pilots are live in about two weeks.

Why do so many CPG marketers say they only measure incrementality at a basic level?

Industry research shows roughly a third of CPG marketers measure incrementality at only a basic level, typically because of cross-functional analytics gaps, long reporting cycles, and reliance on platform-reported ROAS. Always-on measurement tooling and weekly data closes that gap and turns incrementality from a reporting exercise into a decision engine.

CPG Incrementality Measurement | Real-Time, Weekly Sales Lift by Retailer | InMarket

Real-Time CPG Measurement

CPG Incrementality at the Speed of Your Campaign

Q: What is CPG incrementality?

CPG incrementality is the share of sales that a campaign actually caused — the purchases that would not have happened without the ad. It separates true, incremental sales lift from baseline demand, brand-search cannibalization, and platform-reported credit that overstates performance.

Q: How fast can I see incrementality results?

InMarket delivers weekly incrementality reads while your campaign is still in flight — not weeks or months after it ends. You can see lift by retailer, tactic, and audience within days of launch and adjust spend before the budget is gone.

Q: How is this different from MMM or post-campaign lift studies?

Marketing Mix Models look backward at quarters or years of spend at an aggregate level. Post-campaign lift studies arrive weeks after the budget is spent. InMarket runs always-on incrementality measurement at the campaign, retailer, and tactic level — with a weekly refresh cadence designed for in-flight decisions.

Q: Can I measure CPG incrementality across Amazon and Walmart?

Yes. InMarket measures total market incremental sales lift across 20+ retailers — including Amazon, Walmart, Kroger, Target, and natural and specialty chains — not just a single retailer's loyalty panel.

Real incremental sales lift. While your campaign is still running. Weekly reads. Retailer breakouts across 20+ chains. Measurement that actually helps you optimize — not just report.

Get a Demo

InMarket dashboard showing weekly CPG incrementality metrics and retailer-level sales lift

The world’s biggest CPG brands and their agencies measure incrementality with InMarket

Woman shopping in grocery store aisle with smartphone

Most CPG brands are still measuring post-campaign, with limited retailer visibility, relying on platform-reported ROAS. That’s not measurement — it’s credit-claiming.

52% of US brand and agency marketers already use incrementality testing — and another 36% plan to invest more in the next year.¹

¹ EMARKETER + TransUnion survey, July 2025, via EMARKETER, FAQ on incrementality: How to prove your ads actually work in 2026.

What Is CPG Incrementality — and Why Most Brands Are Measuring It Wrong

Incrementality is the share of sales your campaign actually caused — the purchases that wouldn’t have happened without the ad. It’s the only honest way to separate real media impact from baseline demand and platform credit-grabbing. Most CPG teams still rely on signals that quietly overstate performance:

platform-reported ROAS that credits every click to the ad
post-campaign lift studies that arrive weeks after the budget is gone
MMM that looks at quarters, not individual campaigns or retailers

Don’t Rely on Platform-Reported Lift. Measure True Incrementality.

Every channel wants credit for your sales, but siloed reporting leads to double-counting and wasted spend. InMarket combines robust Multi-Touch Attribution (MTA) with real-world testing to cut through the noise.

With InMarket, you get always-on incrementality and attribution intelligence with the signals you need to act:

Weekly
Incrementality

MTA-Driven
Optimization

24/7 Dashboard
Access

Retailer
Breakout

Experts to Help
Along the Way

Turn measurement into a real-time incrementality engine.

11x

Improved media
effectiveness*

↑$2

Return on
investment spend^†

*Source: ‘Getting Smart About Ad Waste’, InMarket & CMO Council, June 2023.
^†Source: ‘The Total Economic Impact^™ of InMarket Lift Conversion Index^® Attribution Solution’, Forrester Research, July 2021.

See Exactly Which Retailers Drive Your Sales

Aggregate incrementality hides where your campaign actually worked. InMarket breaks out incremental sales lift across 20+ individual retailers — including Amazon, Walmart, Kroger, Target, and natural and specialty chains — so you see exactly which retailers your media drove purchases in.

Sales lift dashboard showing projected incremental sales breakdown by retailer including Kroger, Amazon, Walmart, Target, and Publix

Why InMarket is the Best Choice for CPG Incrementality

Not every “measurement” solution actually measures incrementality. Here are the capabilities that separate real incrementality testing from lagging reports and platform-reported credit.

Capability	Legacy Measurement Approaches	InMarket CPG Incrementality
True Incremental Sales Lift (Matched Control)
Closed-Loop Ad-to-Purchase Matching
Post-Campaign Reporting
Weekly Lift Refresh (Always-On)
In-Flight Campaign Optimization	Often separate ($)
Amazon + Walmart Incremental Lift
Individual Retailer Breakouts
24/7 Dashboard Access for All Clients

Get a Custom Comparison →

The Always-On Engine for Real Sales Lift

InMarket delivers the truth about your media spend. Our platform pairs Multi-Touch Attribution with matched control groups to reveal your true incremental lift. By matching ad exposure directly to purchase, we help CPG brands cut waste, boost ROAS, and stop guessing which channels actually drive sales.

$127B

in purchases

Item-level purchases observed

99%

coverage

of the top 100 retailers^*

29K+

retailers

7 retailers shopped per household per month

^* Top 100 retailers per NRF, Top 100 Retailers 2025 List.

What CPG Marketers Are Saying

“Working with InMarket for our CPG measurement is such a game changer. Weekly incremental insights allow us to drill down to many granular levels, including the top 20 retailers, to optimize while the campaign is running for optimal results.”

— VP of Analytics

How to Start Measuring CPG Incrementality

If this is your first real incrementality test — or your first time questioning platform-reported ROAS — you don’t need a six-month rollout. Start small, on one campaign, and scale from there.

Pick One Campaign

Choose a single campaign — one platform, one flight, one market — that you already have budget behind. Social, retail media, CTV, or display all work.

We Setup and Measure

Our team sets up the matched control group, aligns on KPIs and campaign goals, and delivers weekly incrementality reads while your campaign is live. No SKU integrations or panel onboarding required.

Compare and Decide

See what actually drove incremental sales, compare it to your platform-reported ROAS, and decide where your next dollar belongs. Most brands expand to additional channels after the first read.

Start with a free consultation.

InMarket is a preferred partner with leading publishers including

Why CPG Brands Choose InMarket for Incrementality Measurement

Incrementality Reads While Your Campaign Is Still Live

Most brands wait weeks — sometimes months — after a campaign ends to see what it actually drove. By then, the budget is gone and the chance to pivot is too.

InMarket delivers weekly incremental lift reads with 24/7 dashboard access, so you can shift spend from underperforming tactics to winning ones while the ads are still running.

See Which Retailers Are Actually Driving Incremental Sales

An aggregate lift number doesn’t tell you where to double down — or where your media is just taking credit for sales you’d get anyway.

InMarket breaks out incrementality across 20+ individual retailers — including natural and specialty chains, and convenience stores — so you can see exactly which retailers your media is moving the needle in.

Matched Control Groups, Not Self-Reported Attribution

Platform-reported ROAS assumes every click was caused by the ad. That’s not measurement — it’s credit-claiming.

InMarket uses statistically matched control groups to compare exposed and unexposed households, so the lift you see is incremental — not baseline demand or last-click overcount.

Beyond Walled Gardens: Total Market Incremental Lift

A single retailer’s loyalty program captures only a fraction of where your shoppers actually buy. If your incrementality measurement lives inside one walled garden, you’re missing the full picture.

InMarket measures total-market incremental lift — connecting omnichannel ad impressions to purchases across Amazon, Walmart, Target, Kroger, and over 29,000 more.

See CPG Incrementality Measurement in action. Book a demo →

Award-Winning Technology

Frequently Asked Questions About CPG Incrementality

CPG incrementality is the share of sales your campaign actually caused — the purchases that would not have happened without the ad. It separates true, incremental sales lift from baseline demand, brand-search cannibalization, and platform-reported credit that overstates performance. If you can’t isolate the incremental portion of a campaign’s sales, you can’t confidently say it worked.

Attribution assigns credit for a conversion to whichever touchpoint a platform can claim — usually the last click. Incrementality measures whether the campaign drove the conversion at all, by comparing an exposed audience to a statistically matched unexposed control group. In short: attribution tells you where to take credit; incrementality tells you where to spend. Most marketing attribution providers report ROAS based on platform-claimed conversions, which is why incrementality testing almost always comes in lower — and truer.

InMarket measures CPG incrementality by matching ad-exposed households to a statistically matched control group that was unexposed, then comparing in-store and online purchase behavior across a nationwide base of credit and debit card activity, representing $127B in item-level purchases. The difference between the two groups is the true incremental sales lift. Because the match happens at the household level across both online and offline purchases, the lift reflects total-market behavior — not just a single retailer’s loyalty panel.

InMarket delivers weekly incremental lift reads while your campaign is still in flight — not weeks or months after it ends. You can see lift by retailer, tactic, and audience within days of launch and reallocate budget before it’s all spent. That weekly cadence is the difference between measurement as a post-mortem and measurement as a decision engine.

Marketing Mix Models (MMM) look backward at quarters or years of spend at an aggregate level — useful for strategic planning, but too slow and too coarse to steer an individual campaign. Post-campaign lift studies arrive weeks after the budget is spent. InMarket runs always-on incrementality measurement at the campaign, retailer, and tactic level with a weekly refresh — so you can act while it still matters.

Yes. InMarket measures total-market incremental sales lift across 20+ retailers — including Amazon, Walmart, Kroger, Target, and natural and specialty chains. You get a retailer-level breakout that shows where your media actually drove incremental purchases, not just where a single retailer’s loyalty panel happened to capture them.

Most brands start by picking one campaign — on one platform, in one flight, in one market — to baseline. InMarket sets up the matched control, aligns on KPIs and retailers, and delivers weekly lift reads. You don’t need SKU integrations, new tagging, or a panel onboarding. Most pilots go live in about two weeks. After the first read, brands typically expand to additional channels and campaigns.

According to an EMARKETER + TransUnion survey (July 2025), 52% of US brand and agency marketers already use incrementality testing, 36.2% plan to invest more in it over the next 12 months, and 27.6% name expanding incrementality as their top measurement priority.¹ The direction is clear: incrementality is moving from “nice to have” to the default way serious CPG brands evaluate media. The gap isn’t whether to adopt it — it’s whether you adopt always-on incrementality with a weekly refresh, or stick with annual lift studies that arrive too late to act on.

¹ Source: EMARKETER + TransUnion, July 2025, via EMARKETER, FAQ on incrementality: How to prove your ads actually work in 2026.

Find Out What’s Actually Incremental in Your Next CPG Campaign

Stop trusting platform-reported ROAS. InMarket CPG Incrementality Measurement gives you weekly incremental sales lift with matched control groups, retailer-level breakouts, and in-flight optimization — so you can steer spend toward the tactics that are actually working.