Calculate the minimum win rate on Robinhood event contracts after the flat per-contract fee.
Robinhood's flat $0.02 per contract fee creates a simple break-even calculation. Unlike Kalshi's price-dependent formula, your fee is the same regardless of the contract price — which means Robinhood is most efficient at mid-range prices.
Enter the Robinhood contract price.
The calculator adds the $0.02 flat fee to your cost.
Review the break-even win rate.
Compare against Kalshi and Polymarket at the same price.
For very cheap or expensive contracts, check if Kalshi offers better break-even.
Robinhood Yes at $0.50. Fee = $0.02. Effective cost = $0.52. Break-even = 52.0%. At this price, identical to Kalshi taker. But at $0.20: Robinhood break-even = 22.0%, Kalshi taker = 21.2% — Kalshi is cheaper at extremes.
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
Find the minimum win rate you need on Kalshi after accounting for taker and maker fees.
Polymarket Break-Even CalculatorCalculate the minimum win rate needed to profit on Polymarket Global and US.
DraftKings Predictions Break-Even CalculatorFind the win rate you need on DraftKings event contracts after $0.02/contract fees.
Robinhood Event Contract Fees ExplainedCalculate Robinhood's flat $0.01-$0.02 per contract fee and compare to other platforms.
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