Break-even Point

Q: How is the break-even of a call or put calculated?

Long call: strike plus premium paid. Long put: strike minus premium paid. For written options the same numbers mark where the writer's profit turns to loss. A Nifty 24,000 call bought at ₹150 breaks even at 24,150 at expiry; a 24,000 put bought at ₹130 breaks even at 23,870.

Q: Does break-even include brokerage and taxes?

Not unless you add them. Brokerage, exchange charges, GST and Securities Transaction Tax (0.15% of premium on the sell side from 1 April 2026) push the true break-even a little further from the strike. On a Nifty lot the round-trip costs are typically a few rupees per unit, so a ₹150 call really breaks even nearer 24,153 than 24,150.

Q: Why does my position show a loss above its break-even before expiry?

Because the expiry break-even assumes time value is zero. Before expiry the option still carries time value, so a long call above its break-even is worth more than its intrinsic value and shows a profit; a short call can show a loss below the break-even. The expiry break-even is the floor or ceiling the position converges to, not its value today.

Q: What are the break-evens of a straddle and a strangle?

Straddle: strike plus and minus the total premium. Strangle: call strike plus the total premium on the upside, put strike minus the total premium on the downside. A Nifty 24,000 straddle costing ₹480 breaks even at 24,480 and 23,520; a 24,500/23,500 strangle costing ₹70 breaks even at 24,570 and 23,430.

The index level where the trade stops costing and starts paying. Every option position has one or two, and knowing them before you trade is the difference between a view and a guess.

In short: the break-even point of an option position is the underlying price at expiry at which the position's payoff exactly equals the net premium paid or received, so the trade neither gains nor loses. For a long call it is strike plus premium; for a long put, strike minus premium. Multi-leg positions have one or two break-evens from their net premium. Before expiry the position's value differs from the expiry payoff, so the break-even is a destination, not today's price.

The intuition

Buying an option costs money up front. For the trade to pay, the option must be worth at least that much at the end. A 24,000 call bought for ₹150 is worth, at expiry, whatever Nifty is above 24,000; it is worth ₹150 when Nifty is at 24,150. That is the break-even: the strike plus the price of getting there. A put works the other way, and a written option simply flips who is paying whom at the same level.

The practical value of the number is that it turns a premium into a required move. "This call costs ₹150" means little; "Nifty must be above 24,150 by Tuesday, 0.6% from here" is a statement you can judge against the market's own expected move.

Formulas

Position	Break-even(s) at expiry
Long call / short call	strike + premium
Long put / short put	strike − premium
Bull call spread (buy lower, sell higher call)	lower strike + net premium paid
Bear put spread (buy higher, sell lower put)	higher strike − net premium paid
Bull put spread (sell higher, buy lower put)	higher strike − net premium received
Straddle (same strike)	strike ± total premium
Strangle (two strikes)	call strike + total premium; put strike − total premium
Iron condor	short call strike + net credit; short put strike − net credit

Add round-trip costs per unit (brokerage, exchange charges, GST, STT) to the premium for the true figure.

Worked example (illustrative numbers)

Suppose NIFTY is at 24,000 with seven days to the Tuesday expiry. A trader buys one lot (65 units) of the 24,000 call at ₹150. Brokerage is ₹20 per order, exchange and clearing charges about 0.05% of premium, GST 18% on those, and STT 0.15% of premium on the sell side.

Premium paid: 150 × 65 = ₹9,750.
Costs: two orders of brokerage ₹40; exchange charges on roughly ₹19,500 of premium traded ≈ ₹10; GST ≈ ₹9; STT on the sale at, say, ₹150 ≈ ₹15. Total ≈ ₹74, about ₹1.14 per unit.
Break-even at expiry: 24,000 + 150 + 1.14 ≈ 24,151. The costs move it by about one point on Nifty.

Now compare with the market's expected move. At 14% implied volatility the one-week standard deviation is about 465 points, so a 151-point rise is a modest ask: the chain gives the call roughly a 45% chance of finishing in the money and a somewhat smaller chance of finishing above break-even. On a 24,500 call at ₹39, break-even is 24,540, a 2.25% rise, which the same chain prices at well under one chance in five.

Break-evens are where the payoff lines cross zero. The call has one; the straddle has two, further apart because it costs more.

Why it matters to an options trader

It converts price into a required move. That move can then be compared with the implied volatility range and with the trader's own view, which is the whole decision.
It defines a spread's geometry. Maximum profit, maximum loss and break-even together describe any defined-risk position; the break-even is the one that tells you the odds.
It is the writer's line in the sand. For a short strangle, the two break-evens are the range the writer is paid to defend; a strike breached by less than the premium is still a winning trade.
It exposes the cost of far strikes. A cheap option with a distant break-even is a low-probability trade however small the premium.

Common mistakes

Using the expiry break-even to judge a position today. Time value sits on top of the payoff until expiry; the P&L today is the option's market price against the entry, not the hockey stick.
Forgetting costs. Small per lot on Nifty, large on thin stock options where the bid-ask spread dwarfs brokerage.
Confusing break-even with the strike. A call at the strike at expiry is worth zero; it needs the premium on top.
Reading break-even probability as delta. Delta approximates the chance of finishing in the money at all; the chance of finishing beyond break-even is lower.

Indian-market specifics

Costs that shift the break-even on NSE: brokerage (often flat per order), exchange transaction charges, SEBI turnover fee, GST on those, stamp duty on the buy side, and STT of 0.15% of premium on the sell side (from 1 April 2026) or 0.15% of intrinsic value on exercise at expiry.
Expiry break-evens are measured against the final settlement price, not the last traded price: for index options the index close computed by NSE from the last half-hour.
Lot sizes after the January 2026 revision (Nifty 65, Bank Nifty 30, FinNifty 60, Sensex 20) do not change the break-even, which is per unit, but they set the rupee size of the result.
Strike intervals (Nifty 50, Bank Nifty 100) mean break-evens rarely sit on a listed strike; they are a level on the index, not a contract.

FAQ

How is the break-even of a call or put calculated?

Call: strike plus premium. Put: strike minus premium. Same levels for the writer, with the sign of profit reversed.

Does break-even include brokerage and taxes?

Only if you add them; on Nifty they move it by about a point, on thin stocks by more.

Why does my position show a loss above its break-even before expiry?

Because time value is still in the price; the expiry break-even is where the position converges, not its value today.

What are the break-evens of a straddle and a strangle?

Straddle: strike ± total premium. Strangle: call strike + total premium and put strike − total premium.

Break-evens drawn for any position

The options calculator gives the break-even and the Greeks for any single option; in the app, the Strategy page draws the payoff and break-evens for its preset structures (short strangle, iron condor, bull put and bear call spreads, calendar, broken-wing butterfly and ratio spreads). The option-chain pages show the premiums the calculation starts from, from the latest close.

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Related terms

Premium, the distance from strike to break-even
Long Call and Short Put, single-leg examples
Strangle, two break-evens
Implied Volatility (IV), how to judge whether a break-even is reachable