IAB Lifts 2026 U.S. Ad Spend Forecast to 12.3% as Social and CTV Lead Gains
The Interactive Advertising Bureau raised its full-year 2026 U.S. ad-spend growth forecast to 12.3%, up 2.8 percentage points from its January estimate of 9.5%, based on a stronger-than-expected first half and survey data from over 200 brand and agency buyers. Social media and connected TV posted the largest upward revisions, while adapting to AI-driven consumer discovery emerged as the top buyer challenge, cited by 44% of respondents. Separately, 86% of buyers said they had changed or expected to change how they measure media performance within 12 months due to conversational AI tools, a shift IAB flagged as a significant constraint on AI adoption.