TikTok Ads in 2025: New Trends, Opportunities, and Insights

TikTok has become a core channel in today's media mix, especially for e-commerce brands. In 2025, the platform is projected to generate $33.1 billion in global ad revenue, up nearly 40% year-over-year.

Behind this explosive growth are three key drivers marketers can't ignore:

• High Performance: TikTok's powerful influence on purchase decisions, with 61% of users more likely to buy from brands they have seen on the platform.

• Social Commerce Boom: The rise of TikTok Shop and new ad formats such as GMV Max, now driving over $1 billion monthly in U.S. sales.

• Influencer ROI: TikTok is being recognized as one of the most profitable platforms for influencer marketing, outperforming other channels and driving significant brand investments, as highlighted at Cannes Lions 2025.

  
  

New Ad Innovations = New Opportunities

At TikTok World 2025, the team shared many exciting new features and powerful AI solutions designed to make advertising easier, faster, and more effective:

• GMV Max: a commerce-focused solution that allows TikTok Shop merchants to automate their advertising campaigns and drive incremental gross merchandise value (GMV).

• Symphony Creative Studio: AI-powered video-generation tool that helps brands generate, localize, and scale short-form video ads with ease.

• Affiliate Creatives for Ads: a new solution that allows merchants to turn creator content into even more sales by automatically using authorized affiliate content in their GMV Max campaigns.

These innovations help brands produce more targeted, high-performing content at lower costs, while optimizing ad delivery to maximize ROI.

The Challenge of Measurement

With more brands investing in TikTok and testing different ad formats, it's getting harder to measure what’s really working. These are the top three challenges we hear from brands:

Challenge #1: Off-Platform Conversions Not Being Captured

TikTok's native reporting focuses on click-based attribution, but real performance often happens later, or off-platform. Many shoppers see a product on TikTok, then head to Amazon for faster shipping or visit a store for convenience.

That’s what True Classic discovered. They found that 12% of their TikTok-driven sales actually happened on Amazon (Halo Effect), which the platform never reported.

This type of off-platform behavior is common for brands with multiple sales channels. But without measuring these halo effects, marketers risk underestimating TikTok’s actual impact and misallocating budget to channels that appear to perform better simply because they capture the final click.

Challenge #2: Traditional Metrics Don’t Tell the Full Story

TikTok sparks action, but it doesn't always capture it, especially for omnichannel brands. In True Classic's case, incrementality testing showed that their TikTok campaigns had a 74% higher iROAS compared to traditional click-based attribution reported.

With the test results, the team received an incrementality-adjusted attribution model that revealed the actual impact of each tactic, campaign, and creative. Using WorkMagic, they reallocated the budget with confidence, and for the first time, projected a 64% increase in sales.

Challenge #3: No Clear Data to Guide Spend

With TikTok rolling out more ad types and tactics, deciding where to invest is becoming more difficult. Double down on Web Ads or add Shop Ads? Focus on Prospecting or lean into Retargeting?

Without a unified, incrementality-based dashboard, it's hard to know what's truly working and even harder to scale with confidence.

Liquid I.V. faced this challenge head-on. With WorkMagic, they ran a 3-cell geo test to compare performance across TikTok ad types. Here’s what they found:

• 62% of incremental Amazon sales due to TikTok's halo effect

• +90% increased incremental conversions (vs traditional last-click models)

• 71% increased iROAS for Web & Shops Ads (vs Web Ads alone)

  
  

For performance marketers, insights like these are game-changers. It doesn't just inform which platform works, it shows why they work and how to scale them with confidence, down to ad level. As more brands test combinations of ads formats, creative angles, and audience strategies, this type of structured measurement is becoming a must-have for maximizing ROI in the omnichannel world.

Moving To Incrementality-Based Measurement

As more brands invest in TikTok, marketers need granular, incrementality-driven measurement that can capture cross-channel impact, measure halo effect, and guide smarter decisions. That's why leading teams are turning to WorkMagic.

They not only need unbiased insights and easy-to-use dashboards, but more importantly, a more comprehensive approach that combines incrementality testing, incrementality-adjusted attribution, and incrementality-calibrated MMM for full-funnel visibility.

We're inspired to see brands like True Classic and Liquid I.V., who are leading this transformation and proving the value of incrementality-based measurement for TikTok.

Ready to unlock the full potential of your TikTok investment? Book a demo with us.