Sarah Chen had been checking Kalshi every morning for months, watching the odds shift on everything from Federal Reserve rate decisions to Supreme Court rulings. A mid-level policy analyst at a federal agency, she never bet on anything related to her work. Still, when the email landed in her inbox last week, the message was clear: no more prediction markets, period.

The White House has quietly issued guidance prohibiting executive branch employees from participating in prediction markets — online platforms where users bet real money on the outcomes of political, economic, and global events. The directive, confirmed by sources familiar with the matter and first reported by BBC News, marks the first comprehensive attempt by the administration to address the ethical gray zone created by these rapidly growing platforms.

The ban comes as prediction markets have exploded from niche curiosities into mainstream financial instruments. Platforms like Kalshi, Polymarket, and PredictIt now attract millions of dollars in daily trading volume, with users wagering on everything from election outcomes to inflation rates to whether specific legislation will pass Congress. What started as an academic experiment in crowd-sourced forecasting has evolved into something that looks increasingly like a parallel financial system — one that operates in real-time alongside the actual events it's betting on.

Inside Information Meets Real Money

The White House's concern centers on a fundamental conflict: government employees often possess non-public information that could provide an unfair advantage in these markets. A Treasury Department economist who knows preliminary jobs numbers before their release. A congressional staffer aware of private vote counts. A regulatory attorney who understands which way an agency ruling is likely to go.

"The line between informed analysis and insider trading gets very blurry very quickly," said Marcus Webb, a former ethics counsel at the Office of Government Ethics who now advises federal employees on compliance issues. "These platforms create a direct financial incentive to monetize knowledge that employees gain through their official duties."

The guidance reportedly applies to all executive branch employees, from White House senior advisors to entry-level analysts at cabinet agencies. It covers any platform where users can place monetary bets on real-world events, regardless of whether those events relate directly to an employee's area of responsibility.

According to sources, the directive was developed in consultation with the Office of Government Ethics and White House Counsel's office over several months. It extends existing conflict-of-interest rules rather than creating new ones, applying the same principles that already prohibit federal employees from trading individual stocks based on non-public information.

A Market Gone Mainstream

The timing reflects how rapidly prediction markets have moved from the margins to the center of political and financial discourse. During the 2024 election cycle, prediction market odds were cited as frequently as traditional polls by media outlets and campaign strategists. When Polymarket showed a candidate's chances shifting dramatically, it made news.

The platforms have attracted serious money. Polymarket, which operates on blockchain technology and primarily serves international users, has processed over $2 billion in trading volume since its launch. Kalshi, the first CFTC-regulated prediction market exchange in the United States, has expanded from a handful of contracts to hundreds, covering topics from box office receipts to climate data.

Industry advocates argue the markets provide valuable price discovery — aggregating dispersed information into a single probability that often proves more accurate than expert predictions. Academic research has shown that prediction markets frequently outperform polls, models, and individual forecasters in anticipating everything from election results to corporate earnings.

But that very accuracy creates the ethical dilemma. If markets are good at incorporating information, they're also good at rewarding those who have better information than everyone else.

Where the Line Gets Drawn

The White House guidance doesn't prohibit all forecasting activity. Federal employees can still participate in platforms that don't involve real money, such as prediction tournaments or forecasting competitions that award prizes based on accuracy rather than betting returns. The distinction matters: removing the direct financial incentive changes the ethical calculus.

"We're not trying to prevent people from having informed opinions about the world," said one administration official familiar with the guidance, who spoke on condition of anonymity. "We're preventing situations where someone could profit financially from information they learned in their official capacity."

The policy also doesn't prevent federal employees from analyzing or researching prediction markets as part of their jobs. Several government agencies, including the Department of Defense and intelligence community, have experimented with internal prediction markets as forecasting tools. Those programs can continue.

Some ethics experts argue the guidance doesn't go far enough. The revolving door between government and the private sector means former officials often retain valuable insights and networks even after leaving public service. A former White House aide who spent years working on energy policy would likely have better-than-average instincts about regulatory outcomes, even without access to classified information.

"The knowledge doesn't evaporate the day you leave government," noted Jennifer Park, who directs the Government Ethics Project at a Washington think tank. "But we've never prohibited people from using their expertise. The question is whether monetizing predictions crosses a line."

An Industry Watching Closely

Prediction market platforms have been careful not to publicly oppose the White House directive, even as it potentially limits their user base. Platform executives emphasize that their terms of service already prohibit illegal activity, including insider trading.

"We support appropriate ethical guidelines for government employees," a Kalshi spokesperson said in a statement. "Our markets work best when all participants are trading on publicly available information and analysis."

But privately, some in the industry worry the ban could be a precursor to broader restrictions. Prediction markets occupy an uncertain regulatory space, with ongoing debates about whether they constitute gambling, securities trading, or something else entirely. The Commodity Futures Trading Commission has approved some contracts while rejecting others. Several states have raised questions about whether the platforms violate gambling laws.

The White House guidance could provide ammunition for regulators or lawmakers who view prediction markets skeptically. If the administration believes these platforms create enough ethical risk to warrant banning employee participation, critics may argue, perhaps they create risks for the broader public as well.

The Bigger Questions

For workers like Sarah Chen, the policy analyst who had been casually following prediction markets, the ban is more inconvenience than hardship. She never bet large amounts, and her agency's work didn't overlap with the markets she found interesting.

But the directive raises larger questions about how government adapts to new technologies that blur traditional boundaries. Prediction markets are just one example. Federal employees face similar dilemmas around cryptocurrency holdings, social media influence, and the monetization of expertise through online platforms.

"We're in this weird moment where there are more ways than ever to turn information into money," Webb, the former ethics counsel, observed. "The rules were written for a world where the main concern was stock tips and consulting contracts. Now someone can potentially monetize their knowledge by betting on whether it will rain next Tuesday."

The White House has signaled it will continue monitoring the issue. As prediction markets grow and evolve, the guidance may need to evolve with them. For now, federal employees have a clear directive: keep your day job and your side bets separate.

The platforms, meanwhile, will keep running their markets — just with one fewer group of informed participants placing bets on how the government actually works.