Calculate ForecastEx's $0.01 per contract fee — the lowest in the prediction market industry.
ForecastEx has the simplest and cheapest fee structure of any prediction market: $0.01 per contract, built into the spread (Yes + No = $1.01). There's no separate IBKR commission. This makes ForecastEx the most cost-efficient platform for high-volume traders.
Enter the contract price for your ForecastEx position.
The calculator applies the $0.01 flat fee per contract.
Review the break-even probability — it will be only slightly above the contract price.
Compare against Kalshi and Robinhood to see the fee savings.
Consider that ForecastEx requires an Interactive Brokers account.
Buy 500 Yes at $0.45 on ForecastEx. Fee: $0.01 × 500 = $5. Total cost: $230. If the event occurs: receive $500, profit = $270. Break-even: 46.0% — barely above the 45% contract price. On Kalshi taker, the fee would be $0.02 × 500 = $10 — double the cost.
Fee model: $0.01 per contract (built into spread; Yes + No = $1.01)
Formula: $0.01 exchange fee per contract, zero IBKR commission
Timing: Charged at time of trade
Calculate exact Kalshi fees for any contract price. Compare taker vs maker fees and find your true break-even.
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