Guide
How to Calculate Your Stock Break-Even Price
Your break-even price is the share price at which your position becomes profitable. It tells you exactly how far a stock must recover — or how little it needs to move — for you to get your money back. Understanding your break-even is essential before you decide whether to hold, average down, or cut a losing position.
What break-even price means
If you buy 10 shares at $180, your break-even price is $180 — the stock needs to trade at or above $180 for you to have a profitable position. Simple so far.
Now imagine the stock drops to $155. Your break-even is still $180, but the stock needs to rise 16.1% just for you to recover your investment. The lower the price falls, the greater the percentage recovery required — even if the dollar gap stays the same.
When you average down — buying more shares at the lower price — your break-even price changes. It drops from $180 to your new weighted average cost per share. If your new average is $163.33, the stock only needs to reach $163.33 for you to break even, which is a 5.4% recovery from $155, not a 16.1% one.
The break-even formula
Your break-even price is always equal to your average cost per share. After averaging down, use this formula to calculate it:
Where new shares bought = capital ÷ current market price, floored to the nearest whole share. This is identical to the new average cost formula — because break-even and new average are the same number. Your break-even is simply what you paid on average.
If your broker charges a fee per trade, add it to the total cost: (shares held × original price + capital + fees) ÷ total shares. avgr includes a fee toggle for this.
Step-by-step calculation
Let's work through an example from scratch.
Starting position
After averaging down: $3,100 deployed
Calculation: (10 × $180 + $3,100) ÷ 30 = ($1,800 + $3,100) ÷ 30 = $4,900 ÷ 30 = $163.33.
The recovery percentage matters as much as the dollar amount
A break-even of $163.33 vs $180.00 sounds like a meaningful improvement — $16.67 lower. But what matters to your actual return is the percentage recovery required from the current price.
| Break-even price | % recovery needed from $155 | Capital deployed |
|---|---|---|
| $180.00 | +16.1% | $0 |
| $167.50 | +8.1% | $1,550 |
| $163.33 | +5.4% | $3,100 |
| $158.57 | +2.3% | $7,750 |
Going from a 16.1% required recovery to a 5.4% required recovery by deploying $3,100 is substantial. Going from 5.4% to 2.3% by deploying an additional $4,650 is much less so. This is the diminishing-returns pattern again: each additional dollar improves your break-even by less than the previous one.
What to do with your break-even number
Your break-even price is a planning tool, not a target. Once you know it, you can ask better questions:
- Is the recovery realistic? If your break-even requires a 30% recovery, ask whether the stock is likely to reach that level — and on what timeline.
- How does your break-even compare to analyst targets? If consensus price targets are below your break-even, that's a signal the market doesn't expect the recovery you need.
- Is the capital cost of averaging down worth it? Use the calculator to check how much you'd need to deploy to reach a break-even you're comfortable with — and decide whether that capital has better uses elsewhere.
- What's your exit plan? Some investors set a rule: if the stock reaches break-even, they will sell. Others plan to hold through break-even if the long-term thesis remains intact. Knowing your break-even helps you have this conversation with yourself in advance — not in the heat of the moment.
See the numbers for yourself
Enter your position and instantly see your new average, break-even point, and the full diminishing-returns curve.
Open the calculator