How to use this calculator
- Enter shares traded, buy price per share, sell price per share, total buy fees, total sell fees.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Net trading profit = shares × (sell price − buy price) − buy fees − sell fees.
Assumptions and limitations
Dividends, currency movements, short selling and tax-lot selection are excluded.
Worked example
With shares traded = 100, buy price per share = 20, sell price per share = 25, total buy fees = 10, total sell fees = 10, net trading profit is approximately 480.
What the result means
This measures realized trading profit on one matched position rather than capital-gains tax.
Common questions
How should I interpret net trading profit?
This measures realized trading profit on one matched position rather than capital-gains tax.
What should I check before using this result?
Dividends, currency movements, short selling and tax-lot selection are excluded.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.