How do I calculate stock return after commissions and tax?

Net Profit = (Sell Price × Shares) − (Buy Price × Shares) − Buy Commission − Sell Commission − Capital Gains Tax. Net ROI = (Net Profit / Total Invested) × 100. The Simple Return tab handles this automatically — enter separate buy and sell commission rates plus your capital gains tax rate and it outputs net profit, gross ROI and net ROI instantly.

What is the break-even sell price for a stock?

The break-even sell price is the price at which your net profit equals zero after all costs — buy commission, sell commission and capital gains tax. The Simple Return tab calculates this automatically for any combination of commissions and tax rates.

How do I calculate total stock return including dividends?

Total Return = Capital Gain + Total Dividend Income. Total Return ROI = (Total Return / Initial Investment) × 100. For DRIP (reinvestment), dividends are used to purchase additional shares each year, compounding the dividend benefit. The Total Return tab calculates both approaches — with and without DRIP.

What is alpha in stock investing?

Alpha is the excess return your stock generates above a benchmark index, expressed as a percentage per year. For example, if your stock has a CAGR of 13% and the S&P 500 returned 10%/yr over the same period, your alpha is +3%/yr. The vs Benchmark tab calculates your exact alpha and translates it into a dollar difference on a $10,000 investment.

How do I calculate cumulative return across multiple years?

Cumulative return chains individual period returns multiplicatively: (1 + r1) × (1 + r2) × … × (1 + rn) − 1. For example, a +20% gain followed by a −10% loss gives a cumulative return of (1.20 × 0.90) − 1 = +8%, not +10%. The Multi-Period tab calculates this chain-linking automatically for unlimited periods.

What is scenario analysis for stocks?

Scenario analysis models different possible future outcomes for a stock position by applying bear (pessimistic), base (most likely) and bull (optimistic) target prices. For each scenario the calculator shows net profit and ROI after tax, giving you a clear picture of the risk-reward profile before entering or exiting a position.

Is this stock return calculator free?

Yes. The Stock Return Calculator Pro on StockToolHub is completely free to use with no registration or account required.

Stock Return Calculator Pro — Net Profit, ROI & Benchmark

Trade Details

Buy Price

Sell Price

Number of Shares

Costs & Tax

Buy Commission

Sell Commission

Capital Gains Tax

Holding Period

For annualized return (CAGR)

Net Return (after all costs)

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Enter buy & sell price to calculate

Gross Profit

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Total Fees

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Tax Paid

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Net Profit / Loss

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Gross ROI

—

Annualized (CAGR)

—

Break-even Sell Price —

Return Breakdown

Period Returns

Label / Period	Start Value ($)	End Value ($)	Period Return

Cumulative Return

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Periods Tracked

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Best Period

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Worst Period

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Avg Period Return

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Cumulative Portfolio Growth

What each tab calculates

Simple Return

Full trade calculation with buy price, sell price, shares, buy and sell commissions, capital gains tax, and optional holding period for annualized CAGR. Includes break-even sell price.

Total Return

Combines capital appreciation with dividend income — with optional DRIP reinvestment — to calculate the true total return including all sources of profit after tax.

Multi-Period

Track stock returns across unlimited time periods. See cumulative return, best and worst period, average period return, and a portfolio growth chart across all periods.

vs Benchmark

Compare your stock's CAGR and total return against the S&P 500, NASDAQ-100, MSCI World, or any custom index. Calculates your alpha and the exact dollar difference.

Scenarios

Model bear, base, and bull price targets for a current position. Instantly see net profit and ROI for each scenario after tax — side by side for fast decision making.