You closed the sportsbook apps. Then an ad pops up for Kalshi. It calls it trading, and you can buy a "contract" on tonight's game. It sounds different enough to be okay. If you're trying to quit sports betting, that's exactly the moment to slow down.
Prediction markets like Kalshi and Polymarket let you buy contracts on whether something will happen, including the outcome of sports games. They sell it as trading instead of betting. This is what you should know before you tap anything.
What prediction markets are
On a prediction market, you buy a contract that pays out if an event happens, like a team winning a game. Kalshi and Polymarket's U.S. platform operate as federally regulated derivatives exchanges overseen by the Commodity Futures Trading Commission (CFTC). That's why they say their products aren't gambling.
Sports have become their biggest category. Combined Kalshi and Polymarket trading volume grew from under $2 billion a month in mid-2025 to about $53 billion in July 2026, with sports leading the surge.
Are prediction markets like Kalshi gambling?
That fight is happening right now. The companies say no. Several states, including New York, have sued, arguing sports contracts are illegal gambling, and courts have split. A bipartisan Senate bill would ban these platforms from offering sports contracts. Senator John Curtis, one of its sponsors, has said too many young people are getting exposed to addictive sports betting through them.
Whatever the courts decide, putting money on the outcome of a game feels the same when you're trying to quit. It can hook you the same way too.
Why addiction experts are worried about Kalshi and sports contracts
- The self-exclusion gap. These platforms haven't sought state approval, so they don't follow state-mandated protections like self-exclusion. NPR reported on people banned from sportsbooks who relapsed on Kalshi.
- Lower age limits. Critics point out that calling these commodity contracts instead of bets effectively dropped the age limit from 21 to 18.
- Available where sports betting isn't. They've offered sports contracts in some states where regular sports betting is illegal.
- It feels more acceptable. All the talk about research and "trading" makes it feel less like gambling, and that makes it easier to slide back in.
How to protect yourself from prediction markets
- Treat it like a sportsbook. If you're quitting sports betting, sports contracts on prediction markets are part of what you're quitting.
- Ask to be barred. Write to each platform's support and ask them to close your account and block you. NPR reported Kalshi barred one user after he told them he had a gambling addiction.
- Block the sites and apps. Check whether your blocker covers prediction markets. If it doesn't, add their websites to your phone's blocked list. Our guide on How to Block Sports Betting Apps walks you through it.
- Keep an eye on brokerage apps. Some trading and brokerage apps now offer event contracts right next to stocks.
FAQ
Does self-excluding from sportsbooks cover Kalshi?
Usually it doesn't, because these platforms aren't part of state sportsbook self-exclusion programs. Contact each one directly and block them on your phone.
Is trading sports contracts safer than betting?
If you have a gambling problem, the risks are the same. Your money is on the line, the outcome comes fast, and losing makes you want to win it back.
Not sure where you stand?
Nine yes-or-no questions based on the signs doctors use. Nothing you enter leaves your device.
Take the self-checkSources: NPR (October 2026); CCN; Al Jazeera; TechCrunch; Fortune; Wikipedia: Kalshi. The legal situation is changing quickly.
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