Share Profit and Loss Calculator
Work out the dollar profit or loss and percentage return on a share trade after brokerage on both the buy and sell.
Your results
Calculation breakdown
- Cost base
- buy price × units + buy brokerage
- Net proceeds
- sell price × units − sell brokerage
- Profit / loss
- net proceeds − cost base
Worked example
You buy 200 CBA shares at $25.00 paying $10 brokerage, then sell at $30.00 paying another $10 brokerage. Your cost base is $5,010, net proceeds are $5,990, giving a profit of $980, a return of about 19.6%.
Assumptions
- Uses the brokerage amounts you enter; check your broker's actual fee schedule.
- Does not include capital gains tax; see the Capital Gains Discount calculator for that.
- Assumes the entire parcel was bought and sold at the single prices entered.
Sources
How this calculator works
Enter your buy and sell prices, unit count and brokerage to see the net profit or loss on an ASX or international share trade. The calculator nets off brokerage paid on entry and exit before reporting your dollar and percentage return.
Rates sourced from the Australian Taxation Office for the 2026–27 financial year. Last reviewed 01/07/2026.
Frequently asked questions
Does this include capital gains tax?
No, this shows your raw trading profit or loss before tax. Use the Capital Gains Discount calculator to estimate tax on any gain.
What if I sold in multiple parcels?
Run this once per parcel using the actual buy price and quantity for that parcel, since the ATO tracks cost base per parcel.
Does it handle a loss?
Yes, if your sale proceeds are below your cost base plus brokerage the result shows a negative dollar and percentage figure.
Results are estimates only and are not financial, tax, legal or credit advice.
Rates and thresholds are configured for the 2026–27 Australian financial year and should be reviewed when government settings change.