Capital gains tax in 2026 depends on what you sold, how long you held it, your taxable income, and whether special rules apply. Long-term gains can qualify for 0%, 15%, or 20% federal rates. Short-term gains are taxed as ordinary income.
The most important planning point is that capital gains brackets use taxable income, not gross income. Deductions can affect which bracket applies.
For ordinary income brackets, see Tax Brackets 2026 for Side Hustlers. For harvesting losses, read Tax-Loss Harvesting Rules 2026.
Short-Term vs Long-Term
| Holding period | Tax treatment |
|---|---|
| One year or less | Short-term capital gain, taxed at ordinary income rates |
| More than one year | Long-term capital gain, generally eligible for lower rates |
Holding period is usually measured from the day after you acquire the asset through the day you sell it. Selling one day too early can change the tax result.
2026 Long-Term Capital Gains Brackets
For tax year 2026, the IRS inflation adjustment lists these maximum zero-rate and 15% rate amounts:
| Filing status | 0% rate up to taxable income | 15% rate up to taxable income | 20% above |
|---|---|---|---|
| Single and most other individuals | $49,450 | $545,500 | Over $545,500 |
| Married filing jointly | $98,900 | $613,700 | Over $613,700 |
| Married filing separately | $49,450 | $306,850 | Over $306,850 |
| Head of household | $66,200 | $579,600 | Over $579,600 |
| Estates and trusts | $3,300 | $16,250 | Over $16,250 |
These thresholds are based on taxable income after deductions, not salary alone.
2026 Example
Suppose a married couple has $90,000 of taxable income before a $20,000 long-term capital gain.
The 0% long-term capital gains threshold for married filing jointly is $98,900. The first $8,900 of the gain fits in the 0% bracket. The remaining $11,100 is taxed at 15%, assuming no other special rules apply.
This is why year-end planning matters. Deductions, Roth conversions, bonuses, and capital gain realization can interact.
Taxable Income Planning
Capital gains are stacked on top of other taxable income. That means ordinary income, deductions, and other gains affect how much room remains in the 0% or 15% bracket.
Common planning moves include:
- realizing gains in a lower-income year
- spreading a large sale across multiple tax years
- harvesting losses before realizing gains
- using charitable giving to reduce taxable income
- avoiding unnecessary short-term gains
- coordinating Roth conversions with capital gain realization
Example: A single filer with $42,000 of taxable income before gains may have room to realize some long-term gains at 0%. The same filer with a large bonus, Roth conversion, or short-term gain may push more long-term gains into the 15% bracket.
Mutual Fund Capital Gain Distributions
You can owe capital gains tax even if you did not sell fund shares. Mutual funds may distribute capital gains generated inside the fund. These distributions are taxable in a taxable account.
ETFs are often more tax-efficient, but they are not tax-free. You can still owe tax on dividends, sales, and occasional capital gain distributions.
Before buying a mutual fund in a taxable account late in the year, check whether a large capital gain distribution has been announced. Buying right before a distribution can create an immediate tax bill without improving your economic position.
Net Investment Income Tax
High-income taxpayers may also owe the 3.8% Net Investment Income Tax, or NIIT. The NIIT thresholds are not indexed the same way as ordinary tax brackets.
Common thresholds:
- $200,000 for single filers
- $250,000 for married filing jointly
- $125,000 for married filing separately
NIIT can apply to investment income such as capital gains, dividends, interest, rental income, and other passive income, depending on the taxpayer’s situation.
Special Higher Rates
Some gains do not fit neatly into the 0%, 15%, and 20% structure.
Examples:
- collectibles can be taxed at a maximum 28% rate
- certain qualified small business stock gain can have special rules
- unrecaptured section 1250 gain from real estate can be taxed up to 25%
- depreciation recapture can create ordinary income treatment
If the asset is not a regular stock, ETF, mutual fund, or simple bond sale, check the specific rule before assuming the long-term capital gains table applies.
Losses Can Reduce Gains
Capital losses offset capital gains. If losses exceed gains, up to $3,000 of excess loss can generally offset ordinary income, with unused losses carried forward.
This makes tax-loss harvesting useful, but wash sale rules matter. See Tax-Loss Harvesting Rules 2026.
Bottom Line
For 2026, long-term capital gains can fall into 0%, 15%, or 20% federal brackets based on taxable income. Short-term gains are taxed as ordinary income. The best planning opportunities usually come from controlling taxable income, harvesting losses, and timing gains in lower-income years.
Related Reading
- Tax-Loss Harvesting Rules 2026
- Qualified Dividends vs Ordinary Dividends
- Standard Deduction vs Itemizing 2026
- Fractional Shares and Taxes
Sources
- IRS Revenue Procedure 2025-32, 2026 inflation adjustments: https://www.irs.gov/pub/irs-drop/rp-25-32.pdf
- IRS Topic 409, capital gains and losses: https://www.irs.gov/taxtopics/tc409
- IRS Net Investment Income Tax: https://www.irs.gov/newsroom/net-investment-income-tax