Should I include commissions in stock profit calculations?
Yes. Commissions and fees reduce net returns. Omitting them overstates performance, especially on small positions and higher-frequency strategies.
Stock profit calculator
Enter buy price, sell price, shares, and commissions to see net profit or loss.
Free · no sign-up · Runs in your browser · Last updated 18 September 2026
The short version
Net profit = (sell − buy) × shares − commissions on both sides. Gross price difference flatters the result.
What is a stock profit calculator?
A stock profit calculator computes net P&L and return percentage from buy price, sell price, share count, and commissions. Stock and ETF traders use it to see realized profit after fees instead of relying on gross price difference alone.
Stock profit questions
How is net stock trading profit calculated?
Net profit = (sell price − buy price) × shares − commissions on both sides. Return % is net profit divided by total cost basis including fees.
Other free calculators
Net P&L is the easy half. The hard half is a month of them.
TradeReview subtracts commissions on the way in and keeps a running net you do not have to retype. Free forever, no card.