How to use this options profit calculator
Keep current-market assumptions separate from the expiration scenario as you work through the three steps.
- Choose the strategy preset
Select Long Call, Long Put, Covered Call, Protective Put, Bull Call Spread, Bear Put Spread, Long Straddle, or Long Strangle. The preset fixes each leg's option type and buy or sell direction while leaving its strike and premium visible.
- Enter stock, legs, and position size
Separate current stock price from the stock price being tested at expiration. For stock strategies, enter cost basis. For every option leg, enter its strike and premium per underlying unit, then verify contracts, multiplier, and modeled fees.
- Set Greeks assumptions, then calculate
Enter days to expiry, implied volatility, risk-free rate, and continuous dividend yield for the current theoretical Greeks. Calculate, then read the selected-price P/L alongside maximum profit, maximum loss, every reachable break-even, and the payoff curve.
How stock and option legs combine at expiration
The calculator adds each leg at the same nonnegative expiration stock price. Let S be that expiration price, K be a strike, Q be contracts times multiplier, and F be the single position-level fee amount.
Option legs
A long call contributes max(S − K, 0) minus premium; a long put contributes max(K − S, 0) minus premium. A short leg reverses that contribution. The per-unit total is multiplied by Q.
Stock legs and fees
Covered Call and Protective Put add Q × (S − stock cost basis) for matched long shares. Modeled fees are then subtracted once from the whole position, rather than once per leg.
Read the result in the right order
The headline is one expiration scenario, not a forecast. Use the supporting results to understand the complete strategy shape.
- Scenario net P/L uses the exact expiration stock price entered. Return on maximum modeled risk compares that scenario result with the strategy's closed-form maximum loss when one exists.
- Net option debit or credit records the combined premium cash flow. It is not the same as total capital required for stock, margin, or broker collateral.
- Maximum profit and loss come from the strategy's full piecewise payoff, not from the left or right edge of the chart. Strategies with uncapped upside display Unlimited.
- A straddle or strangle can have two reachable break-even prices. The chart marks all strikes, all nonnegative zero crossings, current stock price, and the selected expiration scenario on a numeric axis.
Why the expiration chart and current Greeks differ
The expiration payoff uses actual entry premiums and intrinsic value at expiration. Current Delta, Gamma, Theta, and Vega instead use a European Black–Scholes estimate with one implied-volatility assumption and a continuous dividend yield. Changing DTE, IV, rates, or yield changes the Greeks but not the expiration payoff.
American-style exercise, discrete dividends, volatility skew, live bid-ask spreads, liquidity, early assignment, margin, taxes, slippage, and broker-specific exercise rules can materially change a trade. The page does not calculate probability of profit or recommend a strategy.
Matched shares in Covered Call and Protective Put are derived from contracts × multiplier. For a separate underlying transaction use the stock calculator; for declared dividend cash flow use the dividend calculator. A level-return contribution scenario belongs in the investment calculator rather than inside an option's piecewise expiration payoff. Read the current Options Disclosure Document and broker agreement before trading.
Questions and answers
Options profit calculator FAQ
Quick checks for strategy legs, payoff assumptions, and theoretical Greeks.- What does the Options Profit Calculator calculate?
- It models expiration profit and loss for eight presets: Long Call, Long Put, Covered Call, Protective Put, Bull Call Spread, Bear Put Spread, Long Straddle, and Long Strangle. It also estimates current position Delta, Gamma, Theta, and Vega with a European Black–Scholes model.
- Which inputs does the Options Profit Calculator need?
- Choose a strategy, separate current stock price from the scenario price at expiration, and enter each visible leg's strike and premium per underlying unit. Stock strategies also need cost basis. Position inputs include contracts, multiplier, and modeled fees; Greeks inputs include days, IV, risk-free rate, and dividend yield.
- How should I check the options profit result?
- Confirm each leg's buy or sell direction, strike order, quoted premium, contracts, and multiplier. Then compare scenario P/L with net debit or credit, every break-even, maximum profit and loss, and the payoff chart. Treat current Greeks as theoretical European-style estimates rather than guaranteed price changes.