finance calculator
Calculate stock trade profit, loss, fees, and ROI.
Quick actions: Save inputs, view saved runs, print, share, or export results
Net profit
$1,369
Save this sheet to quickly verify target profits and net proceeds before executing buy or sell orders with your broker.
Formula
Net profit = proceeds - investment - commissions + dividends - taxStock profit is estimated from buy and sell prices, shares, commissions, dividend income, and a simple tax rate on positive gains.
Step by step
Example
Buying 100 shares at $50 and selling at $65 with small commissions and dividends shows the net result after estimated taxes.
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Summary
Net profit
$1,369
After estimated taxes and commissions.
ROI
27.37%
Net profit compared with investment.
Gross profit
$1,610
Before estimated tax.
Estimated taxes
$242
15.0% tax assumption.
D3 visualization
Compare investment, proceeds, dividends, taxes, and net profit.
D3 visualization
Show how gross profit is split between taxes and after-tax profit.
Guide
A stock trade's profitability is determined by the capital gain (price appreciation) plus any dividends received during the holding period, minus broker commissions and capital gains taxes.
While many modern brokerages offer "zero-commission" trading on equities, international trades, option contracts, or premium brokers still assess commissions. This tool provides a structured worksheet to isolate all transactional variables.
To calculate the net after-tax profit and ROI of a stock transaction, apply the following equations:
$$I_{\text{capital}} = \text{Shares} \times \text{Buy Price}$$
$$P_{\text{gross}} = \text{Shares} \times \text{Sell Price}$$
$$\text{Gross Profit} = P_{\text{gross}} - I_{\text{capital}} - \text{Commissions} + \text{Dividends}$$
$$\text{Estimated Tax} = \max(0, \text{Gross Profit} \times \text{Tax Rate}\%)$$
$$\text{Net Profit} = \text{Gross Profit} - \text{Estimated Tax}$$
$$\text{Net Proceeds} = P_{\text{gross}} - \text{Sell Commission} - \text{Estimated Tax}$$
$$\text{ROI (\%)} = \frac{\text{Net Profit}}{I_{\text{capital}} + \text{Buy Commission}} \times 100$$
When holding stock, the capital gain is only one component of your yield. Many mature corporations distribute dividends (cash payouts per share, usually quarterly). Reinvesting or collecting these dividends increases your total return. The calculator adds total dividend cash directly to your gross profit, boosting the trade's final ROI.
Capital gains taxes significantly impact stock profitability. In the US, assets held for one year or less are taxed as short-term capital gains at standard income tax brackets (up to 37%). Assets held for longer than one year qualify for preferential long-term capital gains tax rates (0%, 15%, or 20%), saving investors money. Enter your specific expected tax rate to estimate after-tax net proceeds.
Dividend Yield
Annual dividend payments per share divided by the current stock price.
Wash Sale Rule
IRS regulation preventing tax deductions for losses if matching shares are purchased within 30 days.
Capital Gains Tax
The tax assessed on investment profits based on holding periods.