Comparison · updated July 2026
Interactive Brokers Forecast Contracts vs Kalshi
Interactive Brokers Forecast Contracts and Kalshi are two of the most discussed prediction market platforms in the US. Here's a side-by-side look at how they compare on the factors that actually matter for traders.
Interactive Brokers Forecast Contracts
CFTC-regulated event contracts inside the IBKR trading platform.
Kalshi
The first CFTC-regulated event contract exchange in the United States.
Rating
Interactive Brokers Forecast Contracts
4.1
Kalshi
4.7
Best for
Interactive Brokers Forecast Contracts
Existing IBKR clients
Kalshi
Regulated US event contracts
Regulation
Interactive Brokers Forecast Contracts
CFTC-regulated
Kalshi
CFTC-regulated
US availability
Interactive Brokers Forecast Contracts
Available
Kalshi
Available
Fees
Interactive Brokers Forecast Contracts
$0.02–$0.10 per contract
Kalshi
Up to 2% per trade
Mobile
Interactive Brokers Forecast Contracts
Good
Kalshi
Excellent
Markets
Interactive Brokers Forecast Contracts
Economy, Financial events, Politics
Kalshi
Politics, Economy, Sports, Weather, Culture, AI, Financial events
Payment
Interactive Brokers Forecast Contracts
Kalshi
ACH, Debit card, Wire transfer
Founded
Interactive Brokers Forecast Contracts
Kalshi
2018
Verdicts
Who wins, category by category
Best for regulation
Interactive Brokers Forecast Contracts
Operates as a CFTC-designated contract market.
Best for liquidity
Interactive Brokers Forecast Contracts
Deepest order books on headline markets.
Final take
Should you choose Interactive Brokers Forecast Contracts or Kalshi?
Kalshi comes out narrowly ahead in our methodology, but both platforms have a clear lane. Choose Interactive Brokers Forecast Contracts for existing ibkr clients, and Kalshi for regulated us event contracts.