Options Profit Calculator: Payoff, Breakeven and Max Loss at Expiry
Pick the position, enter strike, premium and lot size, and the price you expect at expiry. You see the P&L, breakeven and the payoff line.
- Nothing you type is stored
- Free
- No signup
Profit / loss at expiry
₹9,750
Profit- Breakeven
- 25,150
- Max profit
- ∞
- Max loss
- ₹9,750
- Premium paid
- ₹9,750
An estimate for learning and planning, not investment advice. Trading in shares and F&O carries risk of loss.
Quantity 65. Payoff at expiry only, before charges. Check the current lot size on NSE/BSE. Green band = profit, red band = loss.
How to use
- Choose long or short, call or put.
- Enter the strike price, the premium per unit, the lot size and the number of lots.
- Enter the underlying price you expect at expiry. The dot on the chart shows where you land.
Good to know
At expiry a call is worth max(0, price − strike) and a put max(0, strike − price). Long positions pay the premium, short positions receive it: long call P&L = (max(0, S − K) − premium) × quantity. Breakeven is strike + premium for calls and strike − premium for puts.
A long option can lose at most the premium paid. A short call has unlimited risk on the upside (shown as ∞) and a short put can lose up to (strike − premium) × quantity if the price falls to zero. Index options in India are European style and cash-settled at expiry.
This page shows the payoff at expiry only, not the value before expiry (which depends on time and volatility), and leaves out brokerage, STT and other charges: use the brokerage calculator for those. Lot sizes change from time to time; check the current lot size on NSE or BSE. An estimate for learning, not investment advice; most retail F&O traders lose money according to SEBI studies.
Questions
How do I calculate the breakeven of an option?
For a call, strike + premium. For a put, strike − premium. At expiry the underlying must be beyond this level for a buyer to profit.
What is the maximum loss when buying an option?
The premium you paid × the quantity.
Why is the short call loss shown as ∞?
Because the price can keep rising without limit, so the seller's loss has no upper bound.
Does this include charges and STT?
No. STT is 0.15% of premium on the sell side from April 2026, plus exchange fees, stamp duty and GST. Use the brokerage calculator.
Can I use it before expiry?
It shows the result at expiry only. Before expiry an option also has time value, which this page does not model.