Stock Return Calculator
Calculate your true profit and Return on Investment (ROI) for stocks, ETFs, and other assets. This tool accounts for dividends, commissions, and estimates after-tax returns.
Calculate ROI & Profit
How It Works
Return on Investment (ROI) Formula
The standard formula for calculating Stock Return is:
ROI = (( (Sell Price * Qty) - Commissions + Dividends ) - (Buy Price * Qty) ) / Total Investment
Tax Implications
- Short-Term Gains: If you held the stock for one year or less, gains are taxed as ordinary income (10-37% depending on your bracket).
- Long-Term Gains: If you held for more than a year, you qualify for preferential rates of 0%, 15%, or 20%.
What this calculator does
This page turns the visible tax inputs into a planning estimate that can be checked against official forms and records. It is designed for quick comparison, not as a substitute for professional tax advice.
How to use this calculator
- Enter the filing status, income, deduction, credit, withholding, and other fields that apply to your situation.
- Run the calculator and review the tax estimate, rate, deduction, or planning result shown on the page.
- Compare the result with IRS forms, state rules, and your own records before making payment or filing decisions.
Frequently Asked Questions
Use Cases
- Calculating total ROI and net profit for individual stock or ETF investments
- Comparing pre-tax vs after-tax returns to understand the real cost of capital gains
- Estimating tax impact of short-term vs long-term holding periods
- Factoring in dividends and trading commissions for an accurate return calculation
- Planning stock sales to optimize between short-term and long-term capital gains rates
Assumptions & Limitations
- Short-term gains (held 1 year or less) are taxed at ordinary income tax rates (10%-37%)
- Long-term gains (held over 1 year) are taxed at preferential rates of 0%, 15%, or 20%
- Does not include the 3.8% Net Investment Income Tax (NIIT) for high earners
- Dividends are included in total return but tax treatment (qualified vs ordinary) is simplified
- State capital gains taxes are not included in the after-tax calculation
- Commission costs are factored into cost basis and net proceeds
Sources & References
- IRS Topic No. 409 — Capital Gains and Losses
- IRS Publication 550 — Investment Income and Expenses
- IRS Schedule D — Capital Gains and Losses
- IRS Topic No. 404 — Dividends
- IRS Form 8949 — Sales and Other Dispositions of Capital Assets
Disclaimer: This calculator provides estimates for educational purposes only. It does not constitute tax advice. Consult a qualified tax professional for advice specific to your situation.