Polymarket, Kalshi, and the Shariah: Are Prediction Markets Haram?

What Are Prediction Markets, and How Do Polymarket and Kalshi Work?

Think of prediction markets as a place where you bet real money on whether a specific event will happen. Will the Fed cut rates before December? Will a particular candidate win the next election? You buy a contract priced somewhere between $0.01 and $1.00 that reflects how likely the market thinks that outcome is. If you're right, your contract pays out $1.00. If you're wrong, it's worth nothing.

Polymarket runs on the Polygon blockchain using USDC, making it decentralized and borderless. Kalshi, by contrast, is a fully regulated US exchange overseen by the Commodity Futures Trading Commission (CFTC), it calls its products "event contracts" rather than bets. Both platforms earn money through fees on trades or settlements, not by taking the other side of your position.

Here's the critical detail that matters for halal investing: you are not buying ownership in a company, a commodity, or any real asset. You are simply staking money on whether something happens. The winner collects what the loser puts in. That's the entire transaction.

Should Muslim Investors Touch Prediction Markets at All?

Prediction markets are exploding in popularity. Polymarket and Kalshi alone processed nearly $9.5 billion in volume in a single month in late 2025. If you're committed to halal investing, you've probably wondered whether these platforms are a smart opportunity or a line you shouldn't cross. The short answer: most Islamic scholars consider them haram. Here's exactly why and what that means for your money.

The Core Islamic Finance Principles at Stake

To understand why prediction markets raise red flags, you need to know the two prohibitions that Islamic scholars apply most directly here.

Maysir - The Gambling Prohibition

Maysir is the Arabic term for gambling, and it covers far more than casino games. At its core, maysir describes any transaction where wealth changes hands purely based on chance — where one person's gain is directly funded by another person's loss, with no productive work, real goods, or genuine services involved in between.

Prediction markets fit this description precisely. When your contract pays out $1.00, that dollar came directly from someone who held the opposite position and lost. No product was made. No service was delivered. No economic value was created. The Quran addresses this directly in Surah Al-Baqarah (2:219), acknowledging that gambling can feel profitable while making clear that its harm to individuals and society far outweighs any financial upside.

Gharar - The Excessive Uncertainty Prohibition

Gharar refers to contracts built on ambiguity, unclear terms, or outcomes so uncertain that one party bears an unfair and unshared risk. Islamic finance doesn't prohibit all uncertainty, every business carries some risk. What's prohibited is structuring a financial contract around an outcome that is fundamentally unknowable at the time of the agreement.

A prediction market contract has no underlying asset, no intrinsic value, and no way to hedge against the uncertainty through real economic activity. The entire contract exists solely because the outcome is unknown. That's textbook gharar.

What Islamic Scholars Actually Say About Polymarket and Kalshi

This isn't a gray area with competing opinions. Scholars who specialize in Shariah-compliant finance have been consistent: prediction markets in their current form are haram.

The reasoning centers on what scholars call mughalabat, a situation where one party's financial gain requires another party's loss, and the transfer happens based on an uncertain outcome rather than any exchange of real value. Polymarket and Kalshi both operate on exactly this model, regardless of how they're branded or regulated.

Kalshi's CFTC regulation is worth addressing directly, because some users assume that regulatory approval signals permissibility. It doesn't. Shariah compliance is determined by the structure of the transaction, not by which US government agency oversees the platform. Notably, multiple US state gambling regulators and major sports leagues have challenged Kalshi's contracts as a form of gambling which aligns with the Islamic classification even if US federal law treats them as financial instruments.

Similarly, Polymarket's use of blockchain and USDC doesn't change anything from a Shariah perspective. The technology is neutral. The underlying transaction is staking money on an uncertain outcome with no asset ownership which is what makes it impermissible.

How Prediction Markets Compare to Other Haram Financial Products

If you're familiar with the Islamic finance screening process, prediction market contracts sit in the same category as two other widely prohibited instruments:

• Binary options: You stake money on whether an asset will be above or below a price at a set time. Win or lose everything. No asset ownership, no productive activity.
• Highly speculative derivatives: Contracts whose value is entirely detached from any real underlying asset, used purely to gamble on price movements.

The common thread across all three is the absence of genuine ownership, productive contribution, or value creation, all of which are foundational requirements in halal investing.

"But I'm Using Research and Data. Isn't That Different From Gambling?"

This is the most common pushback, and it's worth taking seriously. Prediction market users often argue that they're applying deep research, political analysis, or statistical modeling, not just guessing. Doesn't skill change the equation?

The Islamic ruling says no, and here's why: the prohibition on maysir isn't about whether you're informed or uninformed. It's about the structure of the transaction. Even if you're highly skilled, you're still entering a zero-sum contract where your profit comes directly from someone else's loss, tied entirely to an uncertain real-world outcome you have no control over and no ownership stake in.

Compare this to halal stock investing, where your research helps you identify a company creating real products and services. Your returns come from that company's actual economic activity and not from another investor's loss. That distinction is everything in Islamic finance.

Where to Put Your Money Instead: Halal Investing Alternatives

If prediction markets appeal to you because you enjoy analyzing events and taking positions, there are halal-compliant ways to engage your analytical skills in financial markets.

• Halal stock portfolios: Platforms like Wahed Invest, Saturna Capital's Amana Funds, and Azzad Asset Management offer Shariah-screened equity funds. Your money goes into real companies that pass both financial and ethical filters.
• Sukuk (Islamic bonds): Asset-backed instruments that provide returns through profit-sharing or lease arrangements rather than interest. Available through select US brokers and halal finance platforms.
• Halal REITs and real estate crowdfunding: Platforms like Fundrise (with careful screening) or dedicated halal real estate options let you invest in tangible assets with genuine ownership stakes.
• Shariah-compliant ETFs: Funds like the Wahed FTSE USA Shariah ETF (HLAL) or the SP Funds S&P 500 Sharia Industry Exclusions ETF (SPUS) are traded on major US exchanges and independently screened for compliance. More on halal investments options can be found here.

The Bottom Line on Prediction Markets and Halal Investing

Polymarket and Kalshi are innovative platforms, and the data they generate about collective beliefs can be genuinely interesting. But for Muslims committed to halal investing, the conclusion is clear: these platforms are built on a transaction structure that Islamic scholars unanimously classify as haram due to maysir and gharar.

No amount of regulatory oversight, blockchain technology, or personal research skill changes that underlying structure. Your next step is simple, redirect that analytical energy toward Shariah-compliant markets where your returns are tied to real economic value, not someone else's loss.