CTV Measurement: KPIs and Reporting to Measure CTV

In 2026, CTV is a staple of the modern full-funnel strategy — spending will reach nearly $38 billion in the US this year. Advertisers know that CTV needs to be a part of their media mix, especially when buyers need multiple touchpoints before conversion.

The issue is that many CTV ad platforms don’t offer transparent measurement, which is essential for stakeholder buy-in. Without proof that CTV is performing against advertisers’ objectives, they can’t justify the investment. 

Our guide gives you an inside look at CTV measurement: what good CTV reporting looks like, how it works, and what KPIs to track. 

What Is Good CTV Measurement?

Ask ten different advertisers what good measurement looks like, and you’ll get ten different answers. While many CTV providers rely on simple delivery metrics to prove an ad was delivered, this baseline measurement is not enough information to base a media strategy on, especially given the advertising budget constraints of 2026.

Effective CTV measurement bridges the gap between ad exposure and the final conversion. It provides a clear window into the efficacy of your media spend through reporting that prioritizes transparency.

A good CTV measurement framework carries these four trademarks:

1. Independent validation: If the only proof your CTV is working comes from a CTV-focused advertising platform, the reporting is at risk of being a vanity metric more than a source of validation. The only way to have truly verified visitation is going to be when it comes from an independent third party. It’s why AdRoll built InnovidXP reporting into our CTV offering for all managed CTV customers.

2. Actionable data: Reporting tells you what was delivered. Measurement tells you what happened. A good framework tells you why so you can move budget toward what’s working and away from what’s not performing before the campaign ends, not post-mortem.

3. Full-funnel connection: Top-tier CTV measurement does more than track campaign performance; it tracks what the viewer did after exposure across channels and on your website. Good measurement gives you a full look into all the different touchpoints they encountered. 

4. Centralized insights: The industry may be fragmented, but measurement shouldn’t be. A unified point of access with multichannel campaign orchestration and measurement is a must-have for marketing teams to be able to confidently defend their spend.

How Does CTV Measurement Work?

Programmatic CTV is able to harness the power of data for more accurate targeting and measurement than traditional linear TV while still reaching consumers on the largest screen in the house. 

The process is very similar to buying other programmatic ad channels:

Pixel placement

To track engagement, a 1x1 pixel is placed on both the advertiser's website and the CTV creative. Advertisers can also set up additional pixels for granular data on specific visitor behaviors, including form completions or add-to-cart actions, for a detailed look at activity. 

Targeted delivery

Once the pixel is set up and your campaign launches, your CTV ads are served to your ideal target audience. The campaign can retarget consumers who have previously visited your site, lookalike audiences, or hyper targeted audiences you’re trying to reach. 

With AdRoll, marketers can even retarget CTV viewers across desktop and mobile to extend the connection beyond the TV screen. We have a thorough guide to CTV targeting that outlines the audiences you can serve ads to if you'd like to learn more.

Signal capture

As your campaign runs, these pixels record their designated events and send signals to the server to track the data.

This data capture enables view-through attribution. For example, a conversion is credited to CTV if a viewer visits the advertiser's website during the designated attribution window after viewing a CTV ad. 

Accurate and up-to-date attribution

CTV performance data is updated in near real-time alongside your other digital marketing channels.

While the speed of third-party measurement has improved significantly — with dashboards now offering near real-time updates — balancing both delivery and performance is essential. 

AdRoll gives managed CTV clients Innovid tracking, which monitors all site visits within a seven-day window following CTV ad exposure. To capture engagement beyond initial visits, reporting also includes a 14-day KPI period, resulting in a comprehensive 21-day total attribution window for actions such as adding items to a cart. By building on third-party validation, AdRoll gives all customers CTV metrics they can trust to report impact accurately, avoiding inflated credit.

9 Essential CTV Measurement KPIs

To understand CTV KPIs, look at them through two distinct lenses: delivery, which tracks the efficiency of your message distribution, and performance, which monitors the actions taken by your audience following exposure.

Delivery KPIs

1. Impressions

This is the broadest awareness KPI for digital ads. Impressions tell you how many times your ad was served across a CTV platform. And if you’re running over-the-top (OTT) campaigns, an important best practice is to have separate CTV impressions from mobile OTT delivery.

2. Reach

Reach is particularly important for a channel that can target at the household level. Reach tells you how many unique households actually saw a CTV ad. Again, for OTT, it’s important to know who you reached via CTV TV screens vs. mobile OTT. Both have value but need to be transparently reported to truly understand how to manage your budgets efficiently.

3. CPM (Cost Per Mille)

CPMs measure the cost-efficiency of your campaign. Because CTV is premium, unskippable, and full-screen, these CPMs are a reflection of attention, not just delivery. Monitoring CPMs will help you balance reach with budget.

4. Video Completion Rate (VCR)

One of the standout advantages of CTV compared to other channels is that its ads cannot be skipped, which typically results in VCRs approaching 95%+. If you notice a low VCR, it indicates an issue with ad delivery.

Performance KPIs

5. Site Visits

This is the most immediate indicator of interest. By tracking view-through visits, you can see how many people put down the remote and picked up their phone or computer to browse your site after seeing your ad.

6. On-Site Actions

Good measurement goes deeper than the homepage. You can track visits to specific high-value URLs—like a "Women's Shoes" category or a "New Arrivals" page—as well as intent-heavy actions like "Add to Cart."

CTV lifts the impact of all your other channels. When we worked with Quint on their optimizing ad campaigns, they saw a 77% lift in their campaigns with the help of CTV:

7. Conversions

Whether an immediate objective or a long-term result, every advertising channel ultimately aims to drive conversions. CTV is an excellent top-of-funnel strategy, but it can be used for the full funnel, even down to conversions. 

AdRoll managed customers can use integrations in our Cross-Channel Attribution dashboard to see exactly how many sales or sign-ups were supported by a CTV impression in the days following the ad. 

8. CPA (Cost Per Acquisition)

CPA measures how much it costs to achieve your desired, pixel-tracked action — such as leads or sign-ups. By tying CTV back to total conversions, you can calculate the actual cost of bringing in a new customer through the channel.

9. ROAS (Return on Ad Spend)

ROAS (or ROI) measures how much revenue is acquired for each dollar spent on a campaign. If only advertising were as simple as dollar in, dollar out measurements. Still, it’s an important KPI to track as part of a holistic campaign view. When you can trace a CTV exposure all the way to checkout, you can accurately report the revenue generated for every dollar spent.

How to Prevent the CTV “Black-Box” Measurement Problem

The "black box" nature of many CTV platforms results in ambiguous reporting and attribution. Marketers find it challenging to justify their investments when relying solely on platform-specific metrics, particularly due to a lack of transparency and the difficulty of correlating data across different channels and partners without third-party validation.

The lack of transparency often raises the age-old question of attribution vs. incrementality: "Would shoppers have bought anyway without CTV influence?" To move forward with confidence, you need measurement that proves growth.

Independent third-party validation

One way CTV platforms can validate measurement is through collaboration with third-party measurement.

For example, we sponsor third-party measurement via InnovidXP for our Managed and ABM customers. While many measurement tools are limited to the US, this third-party validation is available in all regions where we offer CTV, including EMEA and Australia.

To solve the "would they have bought anyway" puzzle, InnovidXP uses an incrementality method. This focuses specifically on the visits and actions that were likely to have occurred only because of the CTV exposure, giving you an accurate look at CTV’s effect on driving conversions.

Even when reporting attribution, Innovid’s approach factors in multiple signals to attribute fair credit, not over-credit, to each CTV exposure. 

Actionable CTV Metrics

For a CTV measurement platform to be veritable, you also need actionable data inside your daily dashboard — not just inflated vanity metrics.

Take our new suite of CTV metrics coming directly to our campaign reporting for CTV customers in the US, Canada, and Australia. These metrics bridge the gap between third-party validation customers and in-platform actionability:

• Total Unique Households Reached

• Total Site Visits & Unique Household Visitors

• Household Visitor Rate (The percentage of reached homes that visited your site)

• Cost per Household Reached

• Cost per Household Site Visit

These are insights advertisers are familiar with for many other channels, reconciled to the household level for CTV. This is data advertisers can use to inform campaign optimizations on the fly.

Cross-channel attribution

Now that you have determined that CTV is effective, how does it fit into your marketing mix?

The final piece of the puzzle is Cross-Channel Attribution (CCA) — AdRoll’s answer to multi-touch attribution (MTA). CTV is an excellent team player that assists ads across the funnel.

Effective cross-channel measurement clarifies how channels interact along the full path to conversion. By using our CCA dashboard, you can access a dedicated view of CTV paths that illustrates exactly how CTV impressions contribute to overall conversion results.

Follow the journey of your CTV campaign, from initial touchpoint to conversion.

Conclusion: Building a CTV Measurement Foundation

CTV measurement is right for any budget. The tools are here and the data is becoming more granular, whether you opt for third-party measurement or in-platform metrics.

Establish a foundation of trust for your upcoming campaigns. Ensure your data is accurate through third-party validation, maintain agility with in-dashboard reporting, and use cross-channel attribution to understand how CTV ads bolster your entire marketing funnel.

If you’re excited for CTV measurement that justifies buy-in, book a meeting with one of our AdRoll CTV experts.

Last updated on May 7th, 2026.