Trade P&L Calculator

Long trade: Net P&L = (Exit Price − Entry Price) × Shares − Total Fees. Short trade: Net P&L = (Entry Price − Exit Price) × Shares − Total Fees.

Example (long): bought 200 shares at $50.00, sold at $53.50, $5 round-trip commission → Gross P&L = $3.50 × 200 = $700, Net P&L = $700 − $5 = $695. This calculator handles both long and short trades, applies fees automatically, and shows gross vs. net results side by side.

Gross P&L is the price difference times shares, before any fees. Net P&L deducts commissions, exchange fees, and platform charges.

The distinction matters most for frequent traders and small-profit trades. A $30 gross profit on a 100-share trade evaporates with a $15 round-trip commission. Always evaluate your trading edge on net P&L — many apparent strategies disappear once commissions are properly accounted for, especially in high-frequency scalping where individual trade profits are small.

Fee drag percentage = Total Fees ÷ (Entry Price × Shares) × 100. On a $5,000 position ($50 entry × 100 shares) with a $5 round-trip fee: fee drag = 0.10%. The stock must move 0.10% just to break even.

For scalp traders targeting $0.05–$0.10 moves on 500 shares ($25–$50 gross P&L), a $5 commission eats 10–20% of gross profit. This calculator shows the fee drag percentage automatically so you can evaluate whether your intended target move is large enough to cover costs.

On a short trade you sell borrowed shares at the entry price and buy them back (cover) at the exit price. Profit per share = Entry − Exit. A short at $55 covered at $51 = +$4/share profit. A short at $55 covered at $59 = −$4/share loss.

Unlike a long trade where maximum loss is capped at your invested capital, short trade losses are theoretically unlimited because the stock price can rise without a ceiling. The calculator flips the formula automatically when you select the Short direction.

Trade ROI = Net P&L ÷ Capital Deployed × 100, where Capital Deployed = Entry Price × Shares for cash accounts.

Example: $500 net profit on a $10,000 position = 5% trade ROI. For leveraged trades, ROI on deployed capital overstates returns relative to your actual account equity — a $500 profit on a $10,000 leveraged position backed by only $5,000 in margin is a 10% return on equity. Use account equity as the denominator for consistent performance measurement across leverage levels.

Yes — when fees exceed gross profit. Example: stock moves $0.03 in your favor on 300 shares = $9 gross profit, but your round-trip fee is $10 → net P&L = −$1. You correctly predicted price direction but paid more in commission than you earned on the move.

This 'fee loser' scenario is common in scalping with flat per-trade fees on small share counts or tiny price targets. Solutions: switch to per-share pricing, target larger moves, increase share count, or use a zero-commission broker for small-lot trades.