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Buy
Sell
Net Profit (After Fees)
+$2,500.00
Total Invested
$5,000.00
Total Received
$7,500.00
Gross Profit
+$2,500.00
Before fees
Net Profit
+$2,500.00
After all fees
Stock Profit Calculator calculates net stock profit as (sell price × shares − sell fees) − (buy price × shares + buy fees), computes ROI, then applies short-term (marginal bracket stacking) or long-term (0/15/20% + 3.8% NIIT) capital gains tax rates based on holding period and income.
Stock Profit Calculator is a high-performance utility designed to help users streamline their workflow. Built with modern web technologies, it ensures fast processing times and high-quality outputs directly in your browser.
Net profit = (sellPrice × shares − sellFees) − (buyPrice × shares + buyFees). ROI = net profit / total cost × 100. Short-term CGT stacks gains on top of ordinary income through the federal brackets. Long-term CGT: 0% (income < $47,025 single/$94,050 MFJ), 15%, 20%. NIIT: 3.8% on investment income above $200K/$250K.
Short-term capital gains (held <1 year) are taxed as ordinary income (10-37%). Long-term gains (held ≥1 year) are taxed at 0%, 15%, or 20% depending on income.
Selling investments at a loss to offset gains and reduce your tax bill. Watch the 30-day wash-sale rule: you cannot repurchase the same (or substantially identical) security within 30 days.
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