Stock Profit Calculator -- Gain, Loss & Return

Calculate Stock Profit/Loss

How Stock Profit Is Calculated

Stock profit (or loss) is the difference between what you receive when selling and what you paid when buying, minus any transaction costs. This calculator computes your net result using these formulas:

Note: This calculator shows pre-tax results. Actual gains may be subject to capital gains tax. It does not account for dividends, stock splits, or other corporate actions. Consult a tax professional for complete investment analysis.

Worked Examples

Understanding Return Percentage

Return percentage (also called rate of return or ROI) measures how much your investment grew or shrank relative to what you put in. It is more useful than absolute profit for comparing investments of different sizes.

Why Return % Matters

Consider two trades:

• Trade A: $10,000 invested → $500 profit → 5% return
• Trade B: $1,000 invested → $200 profit → 20% return

Trade A made more dollars, but Trade B was more efficient — the same percentage applied to Trade A's capital would have yielded $2,000. Return percentage lets you compare performance across different investment amounts.

Annualized Return

The return shown by this calculator is total return — the gain over the entire holding period. To compare investments held for different lengths of time, you would need to annualize the return. For example, a 10% return over 6 months is roughly equivalent to a 21% annualized return (compounded).

Break-Even Price Explained

The break-even price is the minimum price per share you need to sell at to avoid a loss, after accounting for all costs. It equals your total cost (including buy commission and anticipated sell commission) divided by the number of shares.

Why Break-Even Matters

• Setting targets: Know the minimum exit price before entering a trade
• Evaluating risk: How far does the stock need to move for you to profit?
• Commission impact: High fees raise the break-even hurdle

Example: If you buy 100 shares at $50.00 with $5 buy and $5 sell commissions, your break-even is ($5,000 + $5 + $5) ÷ 100 = $50.10. The stock must rise above $50.10 for you to profit.

Factors This Calculator Does Not Include

This tool calculates capital gain or loss — the profit from price appreciation. Several other factors affect total investment returns:

• Dividends: Cash payments from the company are separate income. Add dividends received to net profit for total return.
• Taxes: Capital gains may be taxable. Short-term vs. long-term holding periods often have different tax rates. This varies by jurisdiction.
• Currency conversion: If you trade in a foreign currency, exchange rate changes affect your home-currency return.
• Opportunity cost: What could you have earned if the money was invested elsewhere?
• Inflation: A 5% nominal return may be less in real (inflation-adjusted) terms.

For tax-related questions, consult a qualified tax professional in your jurisdiction.

Frequently Asked Questions

How do I calculate stock profit?

Stock profit equals (Sell Price × Shares) minus (Buy Price × Shares) minus any commissions. For example, buying 100 shares at $50 and selling at $60 gives ($60 × 100) − ($50 × 100) = $6,000 − $5,000 = $1,000 profit before commissions.

What is return percentage on a stock trade?

Return percentage is (Net Profit ÷ Total Cost) × 100. If you invested $5,000 total (including commissions) and made $1,000 profit, your return is ($1,000 ÷ $5,000) × 100 = 20%. This shows your gain relative to your initial investment.

How do I calculate break-even price?

Break-even price is your total cost (buy price × shares + all commissions) divided by the number of shares. If you bought 100 shares at $50 with $10 total in fees, your break-even is ($5,000 + $10) ÷ 100 = $50.10 per share.

Does this calculator include taxes?

No. This shows pre-tax profit or loss. Actual gains may be subject to capital gains tax, which varies by jurisdiction, holding period, and individual circumstances.

Can I use this for ETFs and cryptocurrency?

Yes. The profit calculation works the same for any asset bought and sold at different prices — stocks, ETFs, mutual funds, cryptocurrency, or commodities.

What about dividends?

This calculator measures capital gain or loss from price changes only. To include dividends in total return, add any dividend income to your net profit before calculating return percentage.

How do commissions affect my profit?

Commissions reduce profit by increasing total cost and decreasing proceeds. Many brokers offer commission-free trades, but some charge per-trade fees ($5–$10 typical) or per-share fees. Even small fees add up over many trades.

What is cost basis?

Cost basis is your total investment in a position — typically the purchase price plus any commissions or fees. It is used to calculate capital gains or losses when you sell. If you made multiple purchases at different prices, methods like FIFO (first-in-first-out) or average cost determine which cost basis applies.

Related Tools

• ROI Calculator — calculate return on investment for any scenario
• Percentage Calculator — calculate percentages, increases, and decreases
• Compound Interest Calculator — see how investments grow over time
• Break-Even Calculator — calculate break-even point for business or investment
• Margin Calculator — calculate profit margin and markup

Stock Profit Calculator FAQ