How to calculate your true break-even price
Your break-even price is the level your trade has to reach for net P&L to be exactly zero after every cost. Because commissions and exchange fees come straight out of your pocket, the price must move in your favor just to get you back to flat. For a long position the formula is:
Break-even = entry price + fees / (quantity × multiplier)
For a short position the sign flips — you need the price to fall — so it becomes entry − fees / (quantity × multiplier). The fee term is exactly how far the price has to travel per unit just to cover your round-trip cost.
Worked example
You buy 100 shares at $100 and pay $20 in
total round-trip commissions.
Fee impact per share = $20 / 100 = +$0.20.
True break-even = $100 + $0.20 = $100.20.
At exactly $100.20 your net P&L is zero — anything below that is still a loss.
Why your break-even is not your entry price
Most calculators ignore fees and wrongly tell you break-even equals your entry price. The moment you pay any commission that answer is false: you are already behind, and the price has to climb (or fall, on a short) just to claw the fees back. This calculator bakes your round-trip fees into the number, so the price you see is the real price you must hit to stop losing money — the figure that actually matters for setting stops and targets.
How position size changes your break-even
Because the fee is spread across every unit, the same commission barely moves a large position but heavily penalises a small one. Here is a $10 round-trip fee on a $100 stock at three position sizes:
| Shares | Fee per share | Break-even (long) | Move needed |
|---|---|---|---|
| 10 | $1.00 | $101.00 | +1.00% |
| 100 | $0.10 | $100.10 | +0.10% |
| 1,000 | $0.01 | $100.01 | +0.01% |
The takeaway: fixed commissions are a hidden tax on small, frequent trades. If you size positions by risk rather than by gut, the position size calculator keeps that cost proportionate, and the profit calculator shows the net P&L once those fees are subtracted.
Using break-even to place stops and targets
Your break-even is the line between a losing exit and a winning one, so it is the natural anchor for both ends of a trade. A stop set inside your break-even locks in a loss no matter what; a target set just beyond it barely covers costs. Once you know the true level, the stop loss / take profit calculator places exits a chosen distance away, and the target price calculator tells you the exit price needed for a specific net profit on top of break-even.
Frequently asked questions
- What is the true break-even price?
- It is the price your trade has to reach for net P&L to be exactly zero after all costs. Because round-trip commissions and fees come out of your pocket, the real break-even is slightly above your entry on a long (and below it on a short) — not the entry price itself.
- How do you calculate break-even with fees?
- Spread your total round-trip fees across the position. For a long: break-even = entry price + fees / (quantity × multiplier). For a short the sign flips: break-even = entry price − fees / (quantity × multiplier). The fee impact per unit is exactly how far the price must move just to cover costs.
- Why is break-even not just my entry price?
- Most quick calculators report break-even = entry, which is wrong the moment you pay any commission. Fees are a real cost, so the price has to move in your favor just to get back to flat. This calculator builds those fees into the number so you know the price you actually need.
- Can I use it for crypto and futures?
- Yes. Crypto supports fractional quantities and small decimal prices. For futures, set the contract multiplier (for example 50 for the E-mini S&P 500) so the per-unit fee impact and break-even price are correct. Forex is coming soon.
- Why do fees hurt small positions more?
- Break-even moves by fees ÷ (quantity × multiplier), so the same $10 commission is $0.10 per share on 100 shares but $1.00 per share on just 10. Smaller positions spread a fixed cost across fewer units, so the price has to travel further just to recover the fee — which is why frequent small trades are so sensitive to commissions.
- Does the break-even change when I average down?
- Yes. Adding shares at a different price moves your blended cost, and your break-even is built on that blended cost plus fees. Work out the new average first with the average down calculator, then feed that figure in here to see your true break-even across the whole position.