The Fee You Pay Twice
A trade has two fee events, not one: a fee when buying (entry) and a fee when selling (exit). It's easy to mentally account for only one of them, or to estimate the total fee impact as roughly double a single trade's fee percentage — but because the exit fee is charged on the exit value (which is usually larger than the entry value on a winning trade), the actual dollar cost of the exit fee is larger than the entry fee even at an identical percentage rate. A 0.5% fee on both ends of a trade that moved from $1,000 to $1,300 costs $5 going in but $6.50 coming out — a small difference per trade, but one that compounds across frequent trading.
Why "30% Price Move" Isn't "30% Profit"
ROI on a trade should be measured against total capital actually deployed — the entry price times quantity, plus the entry fee — not against the raw price move. A price moving from $100 to $130 is a 30% price increase, but the actual return on invested capital is always slightly lower once the entry fee is added to the denominator and the exit fee is subtracted from the numerator. On small trades with high fee percentages (common with certain payment methods or low-liquidity exchanges), this gap between "price move %" and "actual ROI %" can be the difference between a trade that looks good and one that barely breaks even.
Why Break-Even Isn't Just "Entry Price"
A common mental shortcut is treating the entry price as the break-even point — sell above it, you're up; below it, you're down. That shortcut ignores fees entirely. The real break-even price has to be high enough that, after the exit fee takes its cut, what's left still covers the original investment (which already included the entry fee). On trades with meaningful fee percentages, the true break-even price sits measurably above the raw entry price, not at it.
Where This Matters Most
Fee-aware calculation matters most on smaller trades (where fixed or percentage fees are a larger share of the total), frequent trading (where fees compound across many round trips), and any comparison between exchanges or brokers with different fee schedules — the "better" venue isn't always the one with the better price, if its fees are high enough to offset the difference.
Frequently Asked Questions
No — a 30% price move and a 30% return on invested capital are two different numbers. ROI should be measured against total capital actually deployed (entry price times quantity, plus the entry fee), not the raw price change, and once the entry fee is added to the denominator and the exit fee is subtracted from the proceeds, the actual ROI comes out lower than the price move percentage.
More than most people mentally account for, because a trade has two fee events, not one. A 0.5% fee on both ends of a trade that moved from $1,000 to $1,300 costs $5 going in but $6.50 coming out, since the exit fee is charged on the larger exit value even at the same percentage rate — a gap that compounds across frequent trading.
Break-even is the exact exit price where total received equals total invested, and it sits measurably above the raw entry price once fees are included — the entry price alone ignores that the original investment already included an entry fee, and the exit still needs to be reduced by an exit fee. Treating entry price as break-even is a common shortcut that overstates how much profit a position actually has.
Because the entry price isn't the true break-even point. If the current price is above your entry but below the fee-adjusted break-even price, the position is still a net loss once the exit fee is subtracted — the entry price alone doesn't account for either fee that was actually charged on the trade.
Yes — a crypto and stock profit/loss calculator built to account for both entry and exit fees calculates the actual break-even price and true ROI on invested capital, which is more useful to watch during a trade than the raw entry price or price-move percentage alone.