How to Calculate Stock Trading Returns
Calculating stock trading returns is essential for evaluating your performance as a trader or investor. While the basic concept is simple (sell price minus buy price), a thorough calculation should include commissions, holding period, and annualized return to give you an accurate picture of how your trading strategy performs over time.
This calculator accounts for all the key variables in a stock trade: purchase price, sale price, number of shares, commissions, and the time the position was held. It then computes your total dollar profit, percentage return, and annualized return so you can compare this trade against other investments.
- 1Total Invested = $45 × 200 = $9,000
- 2Total Sale Proceeds = $58 × 200 = $11,600
- 3Profit = $11,600 - $9,000 = $2,600
- 4Percentage Return = $2,600 / $9,000 = 28.89%
- 5Annualized Return = (1.2889 ^ (365/180)) - 1 = 65.5%
- 6Profit per Share = $58 - $45 = $13
Why Annualized Returns Matter
A 10% return in 30 days is much better than a 10% return in 365 days. Annualized returns normalize different holding periods so you can compare trades and investments on equal footing. A 10% return in 30 days annualizes to approximately 213%, while a 10% return in 365 days annualizes to exactly 10%.
| Raw Return | 30 Days | 90 Days | 180 Days | 365 Days |
|---|---|---|---|---|
| 5% | 83.1% | 22.2% | 10.3% | 5.0% |
| 10% | 213.8% | 46.4% | 21.0% | 10.0% |
| 20% | 577.0% | 102.4% | 44.0% | 20.0% |
| 30% | 1115.0% | 166.4% | 69.0% | 30.0% |
| 50% | 2804.6% | 316.9% | 125.0% | 50.0% |
Tracking Your Trading Performance
How to Evaluate Your Trading Results
Tax Impact on Trading Returns
Taxes significantly reduce your actual trading returns. In the US, short-term capital gains (positions held under 1 year) are taxed at ordinary income rates of 10-37% federal. Long-term gains (over 1 year) are taxed at 0%, 15%, or 20%. A trader in the 32% tax bracket who earns $2,600 in short-term gains keeps only $1,768 after federal taxes.
Active traders face higher effective tax rates because most trades are short-term. A trader earning 30% annually but paying 35% in taxes on gains keeps only about 19.5% net. A buy-and-hold investor earning 10% annually at 15% long-term capital gains tax keeps 8.5%. Factor taxes into your return calculations.
- Short-term gains (under 1 year): Taxed at ordinary income rates (10-37% federal)
- Long-term gains (over 1 year): Taxed at preferential rates (0%, 15%, or 20%)
- Wash sale rule: Cannot deduct a loss if you buy the same security within 30 days
- Net investment income tax: Additional 3.8% for high earners (above $200K/$250K)
- State taxes: Add 0-13.3% depending on your state