How do you calculate ROI on CTV advertising?

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Last updated: April 8, 2026

Quick Answer: To calculate ROI on CTV advertising, measure total revenue generated from CTV campaigns minus total costs, then divide by total costs and multiply by 100 to get a percentage. For example, if a campaign costs $50,000 and generates $150,000 in revenue, ROI is (($150,000 - $50,000) / $50,000) × 100 = 200%. Key metrics include viewability rates averaging 95% on CTV, higher than desktop's 70%, and attribution through tools like Nielsen's Digital Ad Ratings, which track conversions from CTV ads to sales.

Key Facts

CTV advertising spending in the U.S. reached $21.2 billion in 2023, up from $18.9 billion in 2022
CTV viewability rates average 95%, compared to 70% on desktop devices
ROI calculation formula: ((Revenue - Cost) / Cost) × 100
Attribution tools like Nielsen Digital Ad Ratings track CTV ad performance
CTV ad completion rates are typically over 98%, reducing wasted impressions

Overview

Connected TV (CTV) advertising refers to video ads delivered through internet-connected television devices, such as smart TVs, streaming sticks (e.g., Roku, Amazon Fire TV), and gaming consoles, bypassing traditional cable or broadcast networks. The CTV advertising market has grown rapidly since the early 2010s, driven by the rise of streaming services like Netflix (launched 2007) and Hulu (2007), with significant acceleration during the COVID-19 pandemic in 2020-2021 as viewership surged. In 2023, CTV ad spending in the U.S. hit $21.2 billion, reflecting a shift from linear TV, which saw a 4.5% decline in ad revenue that year. This growth is fueled by CTV's ability to target specific audiences using first-party data, unlike traditional TV's broad demographics. Major platforms include Roku (founded 2002), which reported over 80 million active accounts in Q4 2023, and Amazon Fire TV, with an estimated 50 million users globally.

How It Works

Calculating ROI on CTV advertising involves a multi-step process that combines cost tracking, revenue attribution, and performance metrics. First, identify total costs, including ad spend (e.g., CPM rates averaging $25-$40 for CTV in 2023), production expenses, and platform fees. Next, measure revenue generated directly from CTV campaigns using attribution models; for instance, tools like Nielsen Digital Ad Ratings or Google's Campaign Manager track conversions from CTV ads to website visits or purchases, often via device graphs that link CTV views to mobile or desktop actions. Key performance indicators include viewability (the percentage of ads fully seen, averaging 95% on CTV), completion rates (over 98% for CTV ads), and click-through rates (typically low at 0.1-0.3%, but CTV focuses on brand lift). To compute ROI, use the formula: ((Total Revenue - Total Cost) / Total Cost) × 100. For example, a $50,000 CTV campaign yielding $150,000 in sales results in a 200% ROI. Advanced methods incorporate incremental lift studies, comparing exposed vs. control groups to isolate CTV's impact.

Why It Matters

Accurate ROI calculation for CTV advertising is crucial because it enables marketers to optimize budgets in a rapidly evolving media landscape, where CTV spending is projected to surpass $30 billion by 2025. High ROI from CTV campaigns, often driven by superior targeting and engagement, justifies reallocating funds from linear TV, which has lower measurability. In practice, companies like Procter & Gamble have reported 20-30% higher ROI on CTV compared to traditional TV due to reduced ad waste and better audience segmentation. This impacts business decisions by supporting data-driven strategies, enhancing customer acquisition costs, and driving competitive advantage in sectors like e-commerce and retail, where CTV ads can directly boost online sales. Ultimately, precise ROI analysis ensures efficient ad spend, fostering growth in the digital advertising ecosystem.