Last updated: April 6, 2026
| Feature | Kalshi | Interactive Brokers ForecastTrader |
|---|---|---|
| Overall Rating | 9.2 | 7.5 |
| Category | licensed | licensed |
| US Available | Yes | Yes |
| US States | 42+ states | All 50 states (via IBKR brokerage) |
| Regulated By | CFTC (Designated Contract Market) | CFTC |
| KYC Required | ||
| Trust Score | 9.5/10 | 9.5/10 |
| Liquidity | 9/10 | 7/10 |
| Real Money | ||
| Mobile App | ||
| API | ||
| Fees | No trading fees; $0.01 per contract settlement | Standard IBKR commissions |
| Min. Deposit | $1 | $0 (no minimum) |
| Withdrawal Time | 1-3 business days | 1-3 business days |
| Deposit Methods | Bank transfer, Debit card, Wire transfer | Brokerage account funding, Wire transfer, ACH |
| Market Types | Sports, Politics, Economics, Weather | Politics, Economics, Finance, Climate |
| Visit Kalshi | Visit IBKR Forecast |
Kalshi and Interactive Brokers ForecastTrader approach prediction markets from opposite directions. Kalshi is a purpose-built prediction market exchange designed from the ground up for event contracts. Interactive Brokers has added prediction markets as another asset class within its massive multi-asset brokerage platform. The right choice depends on whether you want a dedicated prediction market experience or an integrated view across all your financial positions.
The fundamental difference is platform philosophy.
Kalshi was built specifically for prediction markets. You create an account, verify your identity, deposit via bank transfer or debit card, and start trading. No brokerage account, no minimum balance. Kalshi processed $43.1 billion in volume in 2025, establishing itself as the largest US prediction market by a wide margin.
Interactive Brokers ForecastTrader adds prediction markets to the world's most powerful retail brokerage. IBKR, founded in 1978 in Greenwich, Connecticut, gives institutional and sophisticated retail traders access to stocks, options, futures, forex, bonds, and now event contracts from a single account. ForecastTrader holds approximately 12% institutional market share in US prediction markets.
The key friction point: to use ForecastTrader, you must open a full Interactive Brokers brokerage account — a more extensive process than a standalone Kalshi sign-up.
For pure prediction market trading, Kalshi is cheaper. If you are already an IBKR client, the marginal cost of adding predictions is reasonable. If signing up purely for predictions, Kalshi's near-zero fee structure is the better deal.
Kalshi offers the broadest range of prediction categories in the US:
Interactive Brokers ForecastTrader covers:
Kalshi has the wider selection, particularly in sports and culture. ForecastTrader's lineup reflects IBKR's institutional DNA — financial, economic, and political events that complement its core products. IBKR's edge is that you can pair a prediction position with a related stock, option, or futures trade in the same account — useful for sophisticated hedging strategies.
Kalshi provides a clean, modern web platform and native mobile app designed for prediction market trading. The interface is intuitive for newcomers, with clear contract pricing, simple order placement, and straightforward account management. Deposits via bank, debit, or wire transfer are processed quickly, and withdrawals take 1-3 business days.
Interactive Brokers offers its Trader Workstation (TWS) desktop platform and mobile app — powerful but complex. TWS has a steep learning curve, and navigating to prediction markets within a platform supporting dozens of asset classes can feel overwhelming. IBKR does offer a powerful API that algorithmic traders prize. For prediction market usability, Kalshi wins clearly. For integrated multi-asset trading, IBKR is unmatched.
Kalshi is a CFTC-designated contract market since 2020, with customer funds held in segregated accounts under direct CFTC oversight. It is purpose-built for regulatory compliance in the prediction market space.
Interactive Brokers is publicly traded (NASDAQ: IBKR), regulated by the SEC, FINRA, CFTC, and dozens of international regulators. With over $400 billion in customer equity and 45+ years of operation, its financial stability is beyond question. Both earn top marks for trust — IBKR has the longer track record, while Kalshi has purpose-built its compliance for prediction markets.
Choose Kalshi if you want a dedicated prediction market experience with the widest market selection, simple onboarding, and near-zero fees. Kalshi is designed for prediction market traders first — from the one-minute sign-up to the clean trading interface.
Choose ForecastTrader if you are already an Interactive Brokers client and want to add prediction markets to your portfolio without opening a separate account. It is also the right choice for institutional or algorithmic traders who want to pair event contracts with stocks, options, and futures in a unified platform. IBKR's API is one of the most powerful in retail brokerage, making it the top choice for quant-driven prediction strategies. If you view prediction markets as one component of a broader multi-asset portfolio, IBKR integrates them better than any standalone platform can.
Kalshi wins this comparison. Kalshi wins for most prediction market traders with a purpose-built platform, more market categories, easier onboarding, and no brokerage account requirement.
