US Prediction Market Platforms — PredictionsWorldCup

Three CFTC-regulated platforms we review accept US traders in 2026: Kalshi, Polymarket and ProphetX. Novig (peer-to-peer sports) and Rebet (social sweepstakes) follow their own state lists.

Polymarket

Sports, politics and culture markets in US dollars.

4.7

World Cup Sports Politics Culture

Read Polymarket review

ProphetX

Your sports prediction market — peer-to-peer contracts, now live nationwide.

4.5

Sports Peer-to-peer Nationwide Mobile-first

Read ProphetX review

Kalshi

US-regulated (CFTC) exchange with a wide range of markets.

4.7

World Cup Sports Politics Economics Culture

Read Kalshi review

Rebet

Social-first prediction markets — 100% deposit match up to $100 on the mobile app.

4.2

Social Sports Mobile-first World Cup

Read Rebet review

Crypto.com / OG

Built for crypto-native traders. Deep regulated liquidity on global sport.

4.2

World Cup Crypto Sports Macro

Read Crypto.com / OG review

Novig

The sharp trader's exchange. No limits on winners.

4.4

World Cup Sports Sharp Exchange

Read Novig review

Sleeper

Sports-first. Social-native. Built for the group chat.

4.3

Sports Social World Cup NFL NBA

Read Sleeper review

Chalkboard

Player props, simplified.

4.0

Sports Player Props NBA NFL

Read Chalkboard review

Frequently asked questions

Which platform is best for new US traders?

Kalshi. It's federally-regulated, USD-funded, has the broadest market mix (politics, sports, economics, culture), and the smoothest onboarding for US bank users.

Which platform has the lowest fees?

Kalshi charges no commission on most markets and earns from the bid-ask spread. Polymarket charges a small spread plus gas. Sportsbook-style platforms (PrizePicks, Underdog) build margin into the lines.

Can US traders use Polymarket?

Yes. US traders use the Polymarket US app, which runs on a CFTC-regulated exchange and clearing organization and works in US dollars. It's available in 49 states plus D.C. (not Nevada).

Which platform is best for sports?

Kalshi for game outcomes and prop-style binary markets; Sleeper, PrizePicks, and Underdog for parlay-style player props.

Offer terms

Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.

Restrictions & requirements apply. Not available in all states. 21+. Event contract trading involves risk & is not appropriate for all. Consider if it's appropriate for you in light of financial circumstances. See novig.com/terms for information.

18+ Only. Restrictions and eligibility requirements apply. Not available in all jurisdictions. Trading is risky. 100% loss can occur. See polymarket.com/tos for more information. The Polymarket US App serves as an independent software provider and affiliate of Polymarket US and Polymarket Clearing, the CFTC-regulated exchange and clearing organization.

New users only. T&Cs apply. ProphetX's minimum age is 18 (or the local age of majority if higher); we recommend 21+. Not available in Nevada. Trading involves risk.

Rebet is a social sweepstakes platform. No purchase necessary. Eligibility and age requirements apply; not available in all states. Void where prohibited. See Rebet's Sweepstakes Rules for details.