Capital Gains Tax Calculator
Estimate tax on your investment gains. Compare long-term and short-term outcomes, see your after-tax gain and effective rate. Estimates 2024 US federal capital gains tax, not tax advice.
Calculator by Toolsloft ↗- Capital gains tax
- $6,446.25
- After-tax gain
- $43,553.75
- Effective rate
- 12.89%
This calculator estimates the federal tax on an investment gain and shows the after-tax amount you keep along with your effective rate. Use it when you are deciding whether to sell an asset, or comparing the cost of selling now versus holding past the one-year mark to qualify for long-term treatment.
How this is calculated
Long-term gains are stacked on top of your ordinary taxable income and taxed at the 2024 federal 0, 15, and 20 percent brackets; short-term gains are taxed as ordinary income, measured as the difference in federal tax with and without the gain added.
How to use
- Enter your capital gain and other taxable income.
- Choose your filing status and whether the gain is long-term or short-term.
- Read the tax, after-tax gain, and effective rate.
Examples
- Long-term, single:
$50,000 gain on $40,000 income → tax $6,446.25 - Short-term:
Taxed as ordinary income at your marginal rate
FAQ
- What is the difference between long-term and short-term capital gains?
- Long-term gains (on assets held more than a year) get preferential 0%, 15%, or 20% federal rates. Short-term gains (held a year or less) are taxed as ordinary income at your regular bracket rates.
- Do capital gains stack on top of my income?
- Yes. Long-term gains are stacked above your ordinary taxable income, so the bracket they fall into depends on how much income you already have. Short-term gains add directly to your ordinary income.
- How accurate is this estimate?
- It estimates 2024 US federal capital gains tax only. It excludes state taxes, the net investment income tax, deductions, and other factors. This is not tax advice, consult a professional.