Finance & Money

Why Your Trading Profit Is Smaller Than You Think

A 30% price move doesn't mean a 30% profit once entry and exit fees are counted twice. Here's the fee math that quietly eats into every trade.

📅 Jul 30, 2026·⏱️ 4 min read·✍️ Cikal Studio Labs
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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.

💡 Practical tip: The break-even price — the exact exit price where total received equals total invested — is a more useful number to watch during a trade than the entry price alone, since it already bakes in both fees. If the current price is below break-even, the position is still a net loss even if it's above the original entry price.

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.

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