Stock Profit Calculator
Calculate the real profit or loss on a share trade after buy fees and sell fees, then compare the net return, break-even price, and fee drag.
Trade details
This calculator auto-updates when values change.
Results
Includes buy fee and sell fee.
Net profit / loss
£1,240.00
Gain of £24.80 per share across 50 shares.
Return
24.78%
Break-even sell price
£100.20
This is a trade maths tool, not investment advice. It does not include tax, spread, slippage, currency conversion, or dividend income.
About This Stock Profit Calculator
This stock profit calculator helps you work out the practical result of a buy-and-sell share trade. It separates the gross price movement from trading fees, so you can see whether a trade is profitable after costs rather than just looking at the share price change.
The calculator is useful before placing an order, after closing a position, or when comparing possible exit prices. It shows net profit or loss, percentage return, total buy cost, total sell proceeds, fee drag, profit per share, and the break-even sell price.
Real investment results can be affected by taxes, spreads, currency conversion, slippage, and account rules. Treat this as a clear trade calculation, not personal investment advice.
Stock Profit Example
If you buy 100 shares at GBP 12 and sell them at GBP 15, the gross price gain is GBP 300. If you paid GBP 10 to buy and GBP 10 to sell, the net profit is GBP 280.
Fees matter more on smaller trades. A trade that looks profitable from price movement alone can become much less attractive once dealing charges, spreads, and currency conversion are included.
Why Break-Even Price Matters
The break-even sell price shows the point where the trade covers the purchase price and fees. It is useful before buying because it shows how far the stock must move before you are actually ahead.
For active traders, tracking break-even after fees can prevent overestimating performance from headline share price moves.
How to Review a Trade Properly
Include all direct costs, compare percentage return with the holding period, and consider tax separately. If the stock is foreign-listed, include currency movement because exchange rates can change the real result.
For long-term investing, avoid judging performance from a single trade alone. Look at total portfolio return, diversification, fees, tax position, and whether the investment still fits the plan.
How to Use This Calculator
- 1
Enter your buy details
Add the buy price per share, number of shares purchased, and any fee paid when opening the position.
- 2
Enter your sell details
Add the sell price per share and the fee charged when selling. The result updates automatically.
- 3
Review net profit or loss
The headline result shows the net trade outcome after fees, plus profit per share and percentage return.
- 4
Check the break-even price
Use the break-even sell price to understand the price needed to cover your purchase cost and trading fees.
Frequently Asked Questions
How do I calculate stock profit?v
Multiply the buy price by the number of shares and add the buy fee. Then multiply the sell price by the number of shares and subtract the sell fee. Net profit is the sell proceeds minus the total buy cost.
Why does the calculator show a break-even sell price?v
The break-even price shows the minimum sell price per share needed to cover the original purchase price and both trading fees. Selling above that price creates a profit before tax.
Does this stock profit calculator include tax?v
No. It does not calculate capital gains tax, dividend tax, stamp duty, or account-specific tax treatment. Add platform charges as fees, then use a tax calculator or tax professional for the tax position.
Can I use this for a losing trade?v
Yes. If the sell proceeds are lower than the buy cost plus fees, the result is shown as a loss and the return percentage will be negative.
What costs are not included?v
The calculator does not include bid-ask spread, slippage, foreign exchange conversion, borrowing costs, dividend income, or tax. Those can materially change the real outcome of a trade.