Options Breakeven Calculator
An options breakeven is the underlying price at which the position returns exactly nothing. For a call it is the strike plus the premium; for a put it is the strike minus it. Commission pushes both further out, and the move has to happen before expiry.
Where the position returns nothing
Enter the strike and what you paid. Commission is included, because a breakeven that ignores it is not one.
Breakeven is strike ± (premium + commission per share). The commission is divided by 100 because one contract covers 100 shares.
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How the number is built
Breakeven is the underlying price at which the position returns exactly zero at expiry — you get back what you paid and nothing more.
For a call, you need the strike plus what it cost:
Call breakeven = strike + premium + commission per share
For a put it runs the other way:
Put breakeven = strike − premium − commission per share
The commission is divided by 100 because a contract covers 100 shares, so a 0.65 round trip is 0.0065 per share. Small, and it belongs in the number rather than outside it.
A worked example
Take the defaults: a 100 strike bought for 3, underlying at 95, 0.65 commission.
The call breaks even at 100 + 3 + 0.0065 = 103.01.
Which is 8.43% above where the underlying sits. That is the figure worth reading first, because it converts a premium into a demand on the market.
The put on the same strike breaks even at 96.99 — the mirror image, and it is already in the money from 95, though only by 2.01 against a premium of 3.
And the premium is 3.00% of the strike. A useful sanity check: an option costing 3% of the strike needs roughly a 3% move beyond the strike just to return the cost.
Being right is not the same as being paid
An option asks for three things where a share asks for one. Direction, magnitude and timing. The underlying can rise, finish above the strike, and still leave the buyer down — which happens at any price between 100 and 103.01 on the default position.
The window is the part that gets underweighted. On this site’s shared series, direction runs average 2.01 bars with the longest at 11 — sustained directional movement is uncommon, and an option needs it to arrive inside a fixed period.
Which is why cheap options are cheap. A far-out strike costs little because the market’s estimate of reaching it is low. The low price is not a discount; it is the probability, quoted.
Reading the move needed, not the premium
The most useful output on this page is the third one, and it is the one nobody quotes. A premium is a price; a required move is a demand on the market, and the two feel completely different while describing the same trade.
Three worked comparisons on the same 100 strike, underlying at 95:
A 1.00 premium breaks even at 101.01 — a 6.32% move. It looks cheap and asks for a sixth of a typical year’s index return in whatever window the contract has left.
A 3.00 premium breaks even at 103.01 — an 8.43% move. Trebling the price added two percentage points to the requirement, because most of the distance was the strike rather than the premium.
A 6.00 premium breaks even at 106.01 — an 11.59% move.
Read down that list and the cheap option is not the easy one. All three need a large move; the expensive one needs a larger one but buys more time or a closer strike to get it. The premium tells you the price and the required move tells you the odds, and only the second one is a decision.
What pushes the breakeven further out
The spread is the largest hidden addition. Buying at the offer and selling at the bid means the premium you effectively paid is higher than the mid price you were quoted, and on a thin chain that gap can be several percent of the contract.
Commission is small per contract and scales with size. On the shared series a round trip is 2% of a median bar’s range, and on options it is charged per contract rather than per trade.
And selling before expiry does not use this number at all. Then the contract still carries time value, so the position can be sold above its intrinsic value — which is why a losing option is usually worth something and why this figure is an expiry calculation.
The original data
Of the 24,971 unique videos in research/search-study-corpus.jsonl, zero have an
instruction-shaped title about options breakeven. Options appear in 235 instruction-shaped titles at
a median of 28,192 views, credit spreads in 9 at 12,476, and the wheel strategy in 6 at 67,411. The
counts come from site/rank_tools2.py.
The wheel strategy has six videos at a 67,411 median and breakeven has none. People are being taught multi-leg strategies before the single number that decides whether any leg is profitable, which is the ordering this whole site’s tools section exists to correct.
The answer to the question on that chart is that halfway with a week left is worse than it sounds. Time value decays fastest at the end, so the second half of the distance has to be covered with less time and a faster-shrinking cushion. Being halfway with a month left and halfway with a week left are entirely different positions holding the same contract.
When it fails
A flat market is where option buyers lose most reliably, and it does not feel dramatic. The underlying goes nowhere, the breakeven is never approached, and the premium decays to zero on schedule. Nothing went wrong with the direction call — there was no direction. Buying options in quiet conditions is paying for movement in a market that is not producing any, and the loss arrives slowly enough that it rarely prompts a review.
The second failure is treating the strike as the target. Between the strike and the breakeven the option is in the money and the position is losing.
A third is ignoring the spread. The premium you paid is the offer, not the mid.
A fourth is applying this before expiry. Time value means the market price differs from this figure, usually in the holder’s favour.
A fifth is buying cheap far strikes. The price is the probability, and the breakeven shows the distance required.
And a sixth is forgetting the deadline. A move that arrives the week after expiry is the same as a move that never came.
Related
Options covers the instrument and the vocabulary around it. Call option is the contract whose breakeven sits above the strike. And put option is the one whose breakeven sits below it.
The habit worth building is checking the move needed as a percentage before buying anything. An option that costs 3 on a 100 strike with the underlying at 95 needs an 8.4% move in a fixed window. Written that way the trade is obviously demanding. Written as a 3 dollar premium it looks cheap, and the price is the same either way.
— Michael Whitman
This page is educational, not financial advice. Test every idea on your own charts before risking money.