TikTok's 24% Bot Rate Costs Advertisers US$63 Billion Yearly

Nearly one in four paid clicks on TikTok is a bot. That is not a rounding error. It is a structural problem in the world's fastest-growing ad platform.

New data from ad verification firm Lunio, based on 2.7 billion ad clicks across six major platforms, puts TikTok's invalid traffic (IVT) rate at 24.2%. Invalid traffic means clicks, conversions, or site visits that come from bots or automated systems, not real people with real intent. Across all major platforms, the industry average sits at 8.51%. On a US$740 billion global digital ad market, that works out to roughly US$63 billion wasted in 2025 alone.

The World Federation of Advertisers had warned years ago that ad fraud would reach US$50 billion by 2025. The industry blew past that figure without much fanfare.

Why TikTok and LinkedIn Post the Highest Bot Rates

The platform ranking tells a story about scrutiny, not just sophistication.

TikTok leads with a 24.2% IVT rate. LinkedIn, often considered the most professional and trustworthy platform, comes in second at 19.88%. X (formerly Twitter) sits at 12.79%. Meta and Google trail behind at 8.2% and 7.57%, respectively.

The reason older platforms score better is not that they are cleaner by nature. Google and Meta have spent two decades under advertiser pressure and US antitrust litigation, which forced them to invest in fraud detection. TikTok, as the youngest major platform, has not faced that same heat. The result is a bot environment that has never been seriously stress-tested.

"Advertisers have been extremely complacent and drank so much Kool-Aid from those platforms over the past 20 years that whatever those major platforms have said they have taken at face value," says Chester Scott, Chief Strategy Officer at Lunio.

Invalid Traffic Corrupts More Than Budget

Invalid traffic does not just drain budget. It corrupts data.

When bots register as real users, conversion rates look worse than they are, attribution models point to the wrong channels, and AI-driven ad systems learn from fraudulent signals. Platforms like Google's Performance Max are particularly exposed: the system is designed to treat every engagement as a positive signal. Fraudsters exploit that assumption.

Direct-to-consumer footwear brand Kuru discovered this firsthand. An audit in November 2024 revealed an average IVT rate of 6.48% across Google and Bing. Digging deeper, the team found branded Google Shopping campaigns running at 19.85%. After deploying ad verification protection, they cut their overall IVT rate to 4.38% by February 2025, a 32% drop over three months.

"At first, invalid traffic may seem small, but it compounds quickly over time," said Tanner Parsons, Kuru's paid search manager. "Invalid traffic continues to be a problem. It is not something you fix once and move on from."

The Industry's Culture of Silence

There is a phrase Lunio's team hears repeatedly from clients: "fear of finding out."

Media buyers know that finding out 20% of the US$5 million budget went to bots is not a conversation any CFO wants to have. So they do not look. The audits that do happen routinely uncover losses exceeding US$1 million per year. "In some audits, we find companies are effectively losing more than US$1 million a year to invalid traffic and setting it on fire," Scott said. "It is probably more useful to set it on fire, because at least that keeps you warm."

One brand, described by former Adidas executive Simon Peel, was spending over £1 million on programmatic ads and £500,000 on social annually, and driving zero measurable business impact. The numbers looked fine in the dashboard. They were not.

Platforms Profit Either Way

Platforms have no financial incentive to solve this. Invalid traffic generates platform revenue whether or not it delivers value to advertisers. Ad fraud is not illegal.

"Do they have an obligation to clean up their ads? Yes. Do they have an incentive to do it? No," said Lunio CEO Neil Andrew. "Their only incentive is to their shareholders to maximize their revenue."

For Asian marketers running significant budgets into TikTok, a platform that generates 25% of its global ad revenue from Southeast Asia, the 24.2% IVT rate is not an abstraction. It is a direct line from media budget to waste.

The verification tools exist. DoubleVerify and Integral Ad Science are widely known. Most brands are still not using them. That gap is where US$63 billion disappears every year.