Stock Profit & Loss Calculator
Quickly compute trading profit or loss including commissions. Useful for planning exits, comparing trades, and estimating capital gains before tax filing.
Educational estimate. Calculator results are for planning and information only, not financial, tax, medical, legal, or engineering advice. Verify important decisions with official sources or a qualified professional.
Stock Profit & Loss Calculator
Capital Gain, ROI & Break-Even
📐 Formula & Method
Profit / Loss
Net gain or loss after transaction costs.
ROI
Return on invested capital including purchase fees.
📋 How to Use
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1
Enter shares and buy price.
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2
Enter sell price (or target price for planning).
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3
Add any buy/sell fees.
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4
Click Calculate.
🔬 Methodology & Accuracy
Formula: Computes net profit/loss and ROI from share count, prices, and fees; break-even sell price includes all costs.
Data sources: Standard cost-basis arithmetic; tax treatment depends on holding period and jurisdiction (use capital-gains-calculator for tax estimates).
Last reviewed: June 2026 · General formula used: Profit / Loss · Accuracy: Results are precise to two decimal places using IEEE-754 double-precision arithmetic. Intended for educational and planning use only.
For informational purposes only. Results are estimates based on the inputs and formulas provided. For financial, tax, medical, or legal decisions, consult a qualified professional. Rates and regulations change — always verify current figures with official sources.