Breakeven Price: How to Calculate It

Breakeven price is the market price at which closing a trade produces exactly zero profit or loss after costs. For a long position, it is your average entry price plus the per-share fees you must recover. Knowing it tells you precisely how far price has to move just to avoid losing money.

What is breakeven price?

Breakeven price is the level at which a position can be closed for no net gain or loss once all costs are counted. Below it (for a long), you are still losing money; above it, you are in profit. It is the dividing line between a losing and a winning exit, which makes it one of the most useful numbers to know before and during a trade.

Breakeven is closely related to cost basis but expressed per share. Cost basis is your total invested amount including fees; breakeven is the per-share price at which selling recovers that total exactly. Knowing your breakeven turns a vague "I'm down a bit" into a concrete target: the precise price your position must reach to stop being a loss. That clarity is part of disciplined trading risk management.

What is the breakeven formula?

The breakeven formula adds your recoverable costs, per share, to your average entry price. For a single-entry long position, it is straightforward.

Breakeven = Average Entry Price + (Total Fees / Number of Shares)

The fees term spreads your round-trip commissions and any other charges across the shares you hold, so each share carries its slice of the cost you must earn back. If you bought 100 shares at 50 dollars with 10 dollars total in fees, your breakeven is 50 plus (10 / 100) = 50.10 dollars. The raw entry was 50, but you do not actually break even until 50.10 because of the fees. The bigger the position relative to fees, the smaller this adjustment, which is one reason frequent small trades suffer most from costs, as our profit and loss calculation guide shows.

How does averaging down change breakeven?

When you add to a position at a different price, your breakeven shifts to the share-weighted average of all entries (plus fees). Averaging down, buying more as price falls, lowers your average cost and therefore your breakeven, which is why it feels reassuring. But it does so by increasing your share count and your total risk in an asset that is already moving against you.

The table shows how a second purchase at a lower price pulls the average entry down. Suppose you first bought 100 shares at 50, then added 100 more at 40.

Purchase	Shares	Price	Running avg entry
First buy	100	$50	$50.00
Add at lower	100	$40	$45.00

Your breakeven (before fees) drops from 50 to 45, so price only needs to reach 45 to recover, not 50. The catch is that you now hold 200 shares worth more total dollars in a falling name. Averaging down is a tool, not a virtue: it lowers breakeven but raises exposure, and it only helps if your thesis is still valid. Use the stock average calculator to see the new average instantly.

A worked example with fees

Suppose you buy 200 shares of a stock across two purchases: 100 at 50 dollars and 100 at 44 dollars, paying 8 dollars in total commissions. First find the average entry, then add the per-share fee.

Average Entry = ((100 x 50) + (100 x 44)) / 200 = 9,400 / 200 = $47.00
Per-Share Fee = 8 / 200 = $0.04
Breakeven     = 47.00 + 0.04 = $47.04

You break even at 47.04 dollars: below that you are at a loss, above it you are in profit, after costs. Note how the second, lower purchase pulled your breakeven from 50 down to about 47, while the fee added only a few cents. This is the practical value of the calculation, it tells you the exact line your exit must clear, so you can set realistic targets rather than hoping. For the long-term version of buying at intervals, see dollar-cost averaging explained.

How does breakeven work for short positions?

Breakeven flips for a short position because you profit when price falls, not rises. Your average entry is the price you sold at, and you break even when you can buy back at that price after covering costs. Fees still push the breakeven against you, but in the opposite direction: they lower the price you must buy back at, since you need a slightly larger fall to recover the commissions.

Short Breakeven = Average Entry Price - (Total Fees / Shares)

If you short 100 shares at 50 dollars with 10 dollars in fees, your breakeven is 50 minus (10 / 100) = 49.90 dollars. You only stop losing once price drops to 49.90, because the fees eat the first 10 cents of the favorable move. The structure mirrors the long case, with the fee adjustment and the favorable direction both reversed, which is the same symmetry seen in profit and loss calculation.

One caution specific to shorts: there is no natural floor to your loss the way a long can only fall to zero. If a shorted stock rises, your breakeven becomes increasingly distant and your loss can grow without a fixed cap, which is why short positions demand especially disciplined stops. Knowing your breakeven on a short tells you how much room you have before a rising price turns a manageable position into a serious loss. See short selling explained for the full mechanics and risks.

Why breakeven matters for your plan

Breakeven anchors your expectations and your exits. Knowing that price must reach 47.04 just to avoid a loss tells you whether your profit target is realistic and how much room a stop gives you below the line. Traders who ignore breakeven often misjudge how far they are from profit, especially after fees and averaging, and hold losing positions hoping for a recovery that is further away than they think.

It also keeps the cost of trading honest. Every breakeven calculation forces you to count fees, which quietly erode returns, and to confront how averaging down has grown your position. Treat breakeven as a fact to respect, not a target to engineer by adding shares: the goal is profitable trades, not merely lowering the line you must cross. For the calculator companion, see the stock average calculator guide.