Stock Profit Calculator
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Stock profit (or loss) is the gain or loss realised from buying and selling shares. It includes capital appreciation (price change), dividends received, and after deducting transaction costs. Total return = (Sale price − Purchase price + Dividends) / Purchase price × 100%.
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Tip: Always calculate return on a total cost basis including fees. A 5% gain on a trade with 2% round-trip commission is only 3% net — frequent trading erodes returns rapidly.
- 1Record purchase price per share and number of shares bought
- 2Add any brokerage commission to the cost basis
- 3Record sale price per share and any commission on sale
- 4Profit = (Sale price − Purchase price) × Shares − Total commissions + Dividends received
Buy 100 shares @ £5 · Sell @ £8 · No dividends=£300 profit (60% return)(£800−£500) = £300
Buy 50 shares @ $20 · Sell @ $15=−$250 loss (−25%)Capital loss — may offset other gains for tax
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Fun Fact
In most countries, short-term capital gains (held under 1 year) are taxed at higher rates than long-term gains. Holding an investment for just over 12 months can significantly reduce your tax bill.
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