Google Bans Real Money Prediction Market Extensions From Chrome Web Store Starting 1 August 2026

Google Blocks Real Money Prediction Market Extensions From Chrome Web Store

Google is shutting the door on browser extensions that let users place real-money bets on future events through the Chrome Web Store, adding fresh pressure on an industry already facing growing legal and regulatory scrutiny.

Under updated Chrome Web Store Developer Program Policies, extensions that facilitate or enable real-money transactions on predictive outcomes will no longer be allowed.

Developers have until 1 August 2026 to comply, after which non-compliant extensions could face enforcement action, including removal from the marketplace.

Google Tightens Rules For Prediction Market Extensions

The updated policies explicitly add prediction market extensions to Google's list of prohibited products.

While the company did not single out any platform by name, the revised language directly affects services offering real-money trading on the outcome of future events through Chrome extensions.

The restrictions arrive as platforms such as Polymarket and Kalshi continue to gain traction, creating another obstacle for companies expanding in the prediction market sector.

Alongside the ban, Google also introduced broader privacy requirements for Chrome extensions.

Developers may only collect user data that is strictly necessary for a clearly disclosed purpose, while all data collection practices and any future changes must be prominently communicated to users.

The policy update also prohibits extensions designed to bypass AI safety protections or platform restrictions.

Explaining the changes, Google said the revisions are intended to strengthen trust across the Chrome ecosystem.

"Users should always have full visibility into how their data is handled, with the confidence that their extension ecosystem operates responsibly."

Google's Own Products Tell A Different Story

The new restrictions stand in contrast to Google's own services.

Google Finance began displaying prediction market data from Kalshi and Polymarket in November 2025, giving users access to market odds while Chrome will soon block browser extensions that enable trading on those same platforms.

Although Chrome extensions are being targeted, users will still be able to access prediction markets through websites and mobile applications.

Prediction Markets Face Growing Regulatory Pressure

Google's policy arrives as prediction market operators continue to face mounting legal challenges across multiple jurisdictions.

Argentina ordered a nationwide block of Polymarket in March 2026, becoming one of more than 30 countries to restrict the platform.

The ruling also led Google and Apple to remove Polymarket's mobile apps for users in Argentina.

In the United States, legal disputes are also intensifying.

The Commodity Futures Trading Commission (CFTC) is defending prediction markets in court following a Kentucky crackdown, while similar legal battles have emerged in states including New York and Wisconsin.

New York officials have argued that prediction markets offering sports-related contracts should fall under existing gambling laws.

Despite the increasing scrutiny, investment in the sector remains strong.

Kalshi is reportedly pursuing a $40 billion valuation only months after raising funding at a $1 billion Series F valuation.

Trading activity has also continued to climb.

According to Dune data, combined monthly notional trading volume across prediction markets reached $291.38 billion as of 22 June 2026.

However, participation has not translated into profits for most users.

A Wall Street Journal analysis found that more than 70% of Polymarket accounts lost money, while just 0.1% of accounts captured 67% of all profits.