How do you calculate stock profit?
Stock profit is net proceeds minus cost basis. Cost basis equals purchase price times shares plus buy fees. Net proceeds equals sale or current price times shares minus sell fees.
Return math
Stock Profit Calculator
Calculate realized or unrealized stock profit, percentage return, fees, proceeds, cost basis, and annualized return when dates are available.
Free calculator
Calculate stock profit or loss
Results use the prices, shares, fees, and optional dates you enter. They are arithmetic outputs, not market forecasts.
Profit or loss
$1,250.00
25% return on a $5,000.00 cost basis.
Cost basis
$5,000.00
Net proceeds
$6,250.00
Percentage return
25%
Annualized return
Add valid dates
Gain per share
$25.00
Break-even sale price
$100.00
Price context
- Loaded security
- Manual scenario
- Loaded current price
- Manual
- Gross purchase value
- $5,000.00
- Holding period
- Add valid dates
Ticker lookup only preloads the sale/current price. Purchase price, shares, fees, and dates stay manual.
Formula
Profit = net proceeds - cost basis
Return % = profit / cost basis
Annualized return appears only when the sale date is after the purchase date and the cost basis is positive.
How the stock profit calculation works
The calculator compares what you paid for a position with what the position is worth at a sale or current price. Fees are included so the result reflects the full cash cost and net proceeds you entered.
Core formula
Cost basis = purchase price x shares + buy fees
Net proceeds = sale price x shares - sell fees
Profit = net proceeds - cost basis
Input definitions
- Purchase price
- The price paid per share when the position was opened.
- Sale/current price
- The realized sale price or the current market price for an unrealized scenario.
- Shares
- The number of shares in the position.
- Fees
- Optional trading costs included in cost basis or proceeds.
- Dates
- Optional dates used only for annualized return.
Worked example
If you bought 50 shares at $100 and the position is now worth $125 per share, the gross gain is $1,250. If you entered fees, the calculator adds buy fees to cost basis and subtracts sell fees from proceeds before calculating the final profit or loss.
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Stock profit calculator FAQ
Does this calculator include fees?
Yes. Buy fees are added to cost basis and sell fees are subtracted from proceeds, so the profit or loss reflects the fee inputs you enter.
When does annualized return appear?
Annualized return appears only when valid purchase and sale dates are entered, the sale date is after the purchase date, and the cost basis is positive.
Can I use current price instead of sale price?
Yes. Enter the current price as the sale/current price to calculate an unrealized gain or loss scenario.