About the Stock Profit Calculator
Before you sell shares, it helps to know what you will actually keep. This calculator takes the number of shares, the buy and sell price, the fee for each trade and the tax rate on gains. It gives the cost, the proceeds, the gain before tax, the tax, the profit after tax, the return on the money you put in, and the price at which you would break even. Type the number of shares, the buy and sell prices, the fees and the tax rate and the stock profit appears at once, with a few related figures underneath, and you can copy the result with one tap. The sums run in your browser, so nothing you enter is uploaded.
Updated October 2026
How to use the Stock Profit Calculator
- 1Enter the number of shares, the buy and sell prices, the fees and the tax rate.
- 2Pick the units or options from the menus if the stock profit tool offers them.
- 3Read the stock profit in the large result box.
- 4Look at the extra rows for related figures.
- 5Press Copy result to keep the answer.
When you need the stock profit
Investors use it to compare a sale at different prices, to see how much fees eat into a small trade and to plan around tax. It also shows how far a price must rise before a trade makes money.
Fees matter most for small trades and frequent trading. The break-even price shows the hurdle: here the share must rise by 20 cents just to cover the two fees.
How the stock profit is worked out
Cost = shares × buy price + buying fee. Proceeds = shares × sell price − selling fee. Gain = proceeds − cost. Tax = gain × rate (only on a gain). Break-even price = (cost + selling fee) ÷ shares. Buying 100 shares at 50 with a 10 fee costs 5,010. Selling at 65 with a 10 fee brings in 6,490, a gain of 1,480. At 15 percent tax the tax is 222, so the profit is 1,258, a return of 25.1 percent. The break-even sell price is 50.20.
Every answer on this page comes from that one rule, so you can check any result by hand with a calculator. The figures shown underneath, such as other units, are conversions of the same answer.
- Fees and tax included
- Return on investment
- Break-even price
Mistakes to avoid with stock profit
Tax rules differ by country, holding period and account type, and some places allow allowances or offset losses. Use the rate that applies to you, or zero to see the result before tax. Currency conversion and dividends are not included. This is a calculator, not tax advice.
On phone and computer
On a phone, type into the boxes one after another and read the stock profit underneath; Copy result puts it on the clipboard for a message or a note. On a computer the inputs sit on the left and the answer on the right, so you can change one figure and watch the stock profit move. The stock profit calculator works the same on both. Profit is one number, and the rest depends on your plan. Average your buys with the Stock Average Calculator, check the return with the ROI Calculator, and see income with the Dividend Yield Calculator.
Features
- Fees hurt small trades
- Rules differ by country
- Not tax advice
- Clear messages when the stock profit inputs make no sense
- Copy the result with one tap
- Private: nothing is uploaded
Frequently asked questions
How do I calculate stock profit?
Cost = shares × buy price + buying fee. Proceeds = shares × sell price − selling fee. Gain = proceeds − cost. Tax = gain × rate (only on a gain). Break-even price = (cost + selling fee) ÷ shares. Buying 100 shares at 50 with a 10 fee costs 5,010. Selling at 65 with a 10 fee brings in 6,490, a gain of 1,480. At 15 percent tax the tax is 222, so the profit is 1,258, a return of 25.1 percent. The break-even sell price is 50.20.
What is the formula for stock profit?
Cost = shares × buy price + buying fee. Proceeds = shares × sell price − selling fee. Gain = proceeds − cost. Tax = gain × rate (only on a gain). Break-even price = (cost + selling fee) ÷ shares. The stock profit calculator applies it exactly and rounds only the displayed answer to six significant figures.
What is break-even price?
The sell price at which your gain is exactly zero after fees.
Is the tax charged on a loss?
No. In this tool a loss produces no tax, though in real life losses can sometimes offset other gains.
Does it include dividends?
No. Add them to the proceeds if you want the total return.
Is this stock profit calculator free and private?
Yes. It is free, needs no account and runs in your browser, so the numbers you type are not uploaded or stored.