Stock Profit Calculator
See exactly how much you made or lost on a stock trade. Enter your buy and sell prices, number of shares, and any commissions to get your net profit and percentage return.
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Breaking Down Stock Returns
Stock profit has two components: the absolute dollar amount and the percentage return. A $500 profit sounds good, but it matters whether you invested $1,000 or $50,000 to earn it. The percentage return puts gains in perspective.
The formula is straightforward: (sell proceeds - buy cost) / buy cost × 100. This gives you the return on investment, which you can compare across different trades regardless of their size.
Commission fees reduce your real return. Even small fees add up over many trades. A $10 round-trip commission on a $1,000 trade reduces your return by 1% before the stock even moves.
Factors That Affect Your Actual Profit
The number this calculator shows is your gross trading profit. Your actual take-home depends on several other factors. Taxes take the biggest bite: short-term capital gains in the US can be taxed at rates up to 37%.
Holding period matters. Stocks held longer than one year qualify for long-term capital gains rates, which max out at 20% for high earners and are 0% for lower income brackets. This tax difference alone can significantly affect your net return.
Currency exchange also plays a role for international stocks. If you bought shares in euros and sold them when the dollar strengthened, your currency gain or loss adds another layer to the calculation.
Using This Calculator for Investment Decisions
Before entering a trade, use this calculator to model scenarios. Set your buy price to the current market price, then try different sell targets. How much do you make at a 10% gain? How much do you lose at a 5% drop?
This helps set realistic profit targets and stop-loss levels. If you need at least $200 profit to justify the trade risk, you can calculate the minimum sell price needed for that return.
After closing a position, enter your actual numbers to record the result. Tracking your real profits and losses over time reveals your average win rate and return, which are essential metrics for improving your trading strategy.
Frequently Asked Questions
How do I calculate stock profit?
Subtract your total cost (buy price × shares + commissions) from your total proceeds (sell price × shares - commissions). The difference is your net profit or loss.
Does this include taxes?
This calculator shows pre-tax profit. In the US, short-term gains (held under 1 year) are taxed as ordinary income, while long-term gains have lower rates of 0%, 15%, or 20% depending on income.
What about dividends?
This calculator focuses on capital gains from buying and selling. Dividends earned while holding the stock are a separate return component not included here.
How do I calculate percentage return?
Divide your net profit by your total investment cost, then multiply by 100. A $250 profit on a $5,000 investment equals a 5% return.
Should I include commission fees?
Yes, for an accurate picture. Many brokers now offer zero-commission trading, but if you pay fees, they reduce your actual profit. Enter 0 if your broker charges no commissions.