Short-term vs long-term capital gains: why one year matters
By Arpit Patel
The same profit on the same investment can be taxed at wildly different rates depending on one thing: whether you held it for more than a year. That single line is the most valuable tax rule most investors never learn.
Short-term: taxed like a paycheck
A short-term gain is profit on an asset you held for one year or less. It's taxed at your ordinary income tax rates — the same 10% to 37% bands that apply to your salary. Sell a winning stock after six months and the gain is stacked on top of your wages and taxed at your marginal rate, which for many people means 22%, 24%, or higher.
Long-term: preferential rates
Hold the same asset for more than a year and the profit becomes a long-term gain, taxed at preferential rates of 0%, 15%, or 20% depending on your taxable income. For most middle-income investors the long-term rate is 15% — often less than half what the same gain would cost as short-term income. That difference is why “just past a year” is such a powerful holding rule.
The 2026 long-term breakpoints
The 0/15/20% rate you pay depends on your total taxable income for the year (the gain included). For 2026:
| Rate | Single | Married filing jointly | Head of household |
|---|---|---|---|
| 0% | up to $49,450 | up to $98,900 | up to $66,200 |
| 15% | $49,450 – $545,500 | $98,900 – $613,700 | $66,200 – $579,600 |
| 20% | above $545,500 | above $613,700 | above $579,600 |
How gains “stack” on your income
The breakpoints catch people out because long-term gains stack on top of your ordinary income, not underneath it. Picture a bar: your wages and other ordinary income fill it from the bottom; your long-term gain sits on top. The rate on the gain depends on where the top of that stack lands. So a large gain can start in the 0% band and spill into 15%, taxed in pieces — which is why “my capital gains rate is 15%” can quietly hide a blended result.
Two people with the same gain can pay very different rates, because the rate is set by their total taxable income, not the gain alone.
The 3.8% surtax on top
High earners may also owe the Net Investment Income Tax (NIIT) — an extra 3.8% on investment income once modified AGI exceeds $200,000 (single) or $250,000 (married filing jointly). These thresholds aren't adjusted for inflation, so they catch more households every year. It applies on top of the 15% or 20% long-term rate.
The practical takeaway
If you're sitting on a gain and approaching the one-year mark, the tax math alone is often worth waiting for — crossing from short-term to long-term can roughly halve the bill. The exception is when the investment case has genuinely broken; never let the tax tail wag the investment dog. But all else equal, patience is rewarded directly in your tax rate.
Enter your gain, income, and how long you held the asset to see the tax both ways — and exactly what the one-year mark would save you.
Open the Capital Gains Tax Calculator →Frequently asked questions
How long do I have to hold an investment for the lower tax rate?
More than one year — a year and a day. At that point the profit is a long-term gain taxed at 0%, 15%, or 20% instead of your ordinary income rate. One year or less is short-term and taxed as ordinary income.
What are the 2026 long-term capital gains rates?
0%, 15%, or 20%, based on total taxable income. For 2026 the 0% rate applies up to $49,450 single or $98,900 married filing jointly; 15% applies above that up to $545,500 single or $613,700 married; 20% applies beyond. High earners may also owe a 3.8% net investment income tax.
Do capital gains stack on top of my income?
Yes. Long-term gains sit on top of your ordinary income, so the rate depends on where the top of your total taxable income lands. A single gain can be split across the 0% and 15% bands, producing a blended rate.
What is the 3.8% net investment income tax?
An additional 3.8% surtax on investment income (including capital gains) for taxpayers whose modified AGI exceeds $200,000 single or $250,000 married filing jointly. The thresholds are not indexed for inflation, so more households cross them each year.