Calculate Robinhood's flat $0.01-$0.02 per contract fee and compare to other platforms.
Robinhood charges a flat fee of $0.01 (Robinhood fee) plus up to $0.01 (Kalshi exchange fee) per contract. This flat structure is simpler than Kalshi's formula-based fees and is cheaper at mid-range prices ($0.40-$0.60) but comparable at extremes.
Enter the contract price for your intended position on Robinhood.
The calculator applies Robinhood's flat $0.02 per contract fee.
Review effective cost and break-even probability.
Compare against Kalshi's fee at the same price — Robinhood is often cheaper at mid-range prices.
Factor in the round-trip cost if you plan to sell before resolution.
Buy 200 Yes contracts at $0.50 on Robinhood. Fee: $0.02 × 200 = $4.00. Total cost: $104. If the event occurs: receive $200, profit = $96. Break-even: $0.52 / $1.00 = 52.0%. On Kalshi taker: fee would be $0.02 × 200 = $4.00 — same at $0.50, but Kalshi is cheaper at extreme prices.
Fee model: $0.01–$0.02 per contract
Formula: $0.01 Robinhood fee + up to $0.01 exchange fee per contract
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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