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How Much Tax on $100,000 Capital Gains?

Selling investments for a $100,000 profit triggers capital gains tax, but the amount you owe depends heavily on how long you held the asset and your income level. Long-term capital gains (assets held over 1 year) are taxed at preferential rates of 0%, 15%, or 20%, while short-term gains are taxed as ordinary income.

For a single filer with $75,000 in ordinary income in 2026, a $100,000 long-term capital gain is taxed at 15% — resulting in approximately $15,000 in federal capital gains tax. If the gain is short-term (held ≤ 1 year), it's added to your ordinary income and taxed at your marginal rate, potentially resulting in $20,000-$25,000 in tax.

State taxes add another layer. California taxes capital gains as ordinary income (up to 13.3%), while Texas and Florida have no state capital gains tax. Use the calculator below for a precise estimate based on your filing status and income.

Investment Sale Details

?Enter your cost basis.
?The price you sold the asset for.
?How many years you plan to own the home before selling it.
?Enter your ordinary taxable income.
End of inputs

Your Capital Gains Tax Estimate

Capital Gain
$50,000.00

Long-term

Total Tax
$7,500.00

ST + LT + NIIT

Short-Term Tax
$0.00

Ordinary rates

Long-Term Tax
$7,500.00

0/15/20% rates

NIIT
$0.00

3.8% surtax

Net Proceeds
$92,500.00

After tax

Effective Rate
15.00%

Total tax ÷ gain

Marginal LTCG Rate
15.00%

Top LTCG bracket

Cost basis: $50,000.00. Sale price: $100,000.00. Gain: $50,000.00 (Long-term). Holding period: 18 months. Ordinary income: $95,000.00. Filing status: Single. Short-term tax: $0.00. Long-term tax: $7,500.00. NIIT: $0.00. Total tax: $7,500.00 (15.00% effective). Net proceeds: $92,500.00.
Where Your Sale Proceeds Go
Key Insights
Your $50,000.00 gain is classified as long-term because you held the asset for 18 months (more than 1 year). Long-term gains are taxed at preferential rates of 0%, 15%, or 20% — significantly lower than ordinary income rates. This saves you money compared to selling before the 1-year mark.
You held the asset for 18 months — just past the 1-year threshold that unlocks long-term rates. This timing saved you from the higher short-term (ordinary) rates. In the future, consider holding well past 12 months to avoid edge cases near the cutoff, and note that the holding period is measured from the day after acquisition to the sale date.
Your long-term gains are taxed at the 15% rate — the most common LTCG bracket for middle-to-upper income filers. On a $50,000.00 gain, the long-term portion of your tax is $7,500.00. This 15% rate is well below the ordinary income rates (up to 39.6%), which is why holding assets over 1 year is so valuable.
Your total capital gains tax of $7,500.00 is 15.00% of your $50,000.00 gain — a moderate burden. This is typical when the 15% long-term rate applies. You keep $92,500.00 after tax from the sale. Holding assets longer than 1 year is the key reason this rate stays below ordinary income rates.
The Net Investment Income Tax (NIIT) does not apply because your modified adjusted gross income is below the threshold ($200,000 for single, $250,000 for married filing jointly). You avoid the additional 3.8% surtax on investment income. High earners should plan sales carefully, as a large gain can push MAGI over the threshold and trigger the NIIT.

Frequently Asked Questions

How much tax do I pay on $100,000 in long-term capital gains?

For a single filer with $75,000 ordinary income in 2026: $100,000 long-term capital gain is taxed at 15%, resulting in ~$15,000 federal tax. If your total income (including gains) is under $48,375, the rate is 0%. Above $533,400, it's 20%. Most middle-income filers pay 15%. State tax varies: $0 in TX/FL, up to ~$13,300 in CA.

What's the difference between short-term and long-term capital gains tax?

Short-term gains (assets held ≤ 1 year) are taxed as ordinary income at your marginal rate (10%-37%). Long-term gains (held > 1 year) are taxed at preferential rates: 0%, 15%, or 20% depending on income. On a $100,000 gain, this difference can be $5,000-$10,000+. Always hold investments for at least 1 year and 1 day if possible to qualify for long-term rates.

How can I reduce capital gains tax on $100,000?

Strategies: (1) Hold assets > 1 year for long-term rates. (2) Harvest tax losses to offset gains ($3,000/year against ordinary income, unlimited against gains). (3) Donate appreciated stock to charity (deduct full value, pay no capital gains). (4) Use an opportunity zone reinvestment to defer gains. (5) Spread sales across multiple tax years. (6) In retirement, sell in years with low income to qualify for 0% rate.

Does the 3.8% Net Investment Income Tax apply to $100K gains?

The NIIT applies if your modified adjusted gross income (MAGI) exceeds $200,000 (single) or $250,000 (married filing jointly). If your income including the $100,000 gain exceeds these thresholds, the 3.8% NIIT applies to the lesser of your net investment income or the amount over the threshold. For a single filer with $75K income + $100K gain = $175K MAGI, NIIT does not apply.

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