Taxes and income
Short-Term vs. Long-Term Capital Gains
Reviewed by the Smart Finance Calculators Editorial TeamLast reviewed:
The federal tax treatment of a capital gain depends almost entirely on one question: how long did you hold the investment before selling it? Assets held for one year or less produce short-term gains, which are taxed as ordinary income at rates up to 37%. Assets held for more than one year produce long-term gains, which may qualify for preferential federal rates of 0%, 15%, or 20%.
That difference in tax rate can easily amount to thousands of dollars on the same gain. This guide explains how holding period is counted, what each rate category means in practice, and how the long-term rate interacts with your other income.
Key takeaways
- Short-term gains (one year or less) are taxed as ordinary income through standard federal brackets.
- Long-term gains (more than one year) may qualify for 0%, 15%, or 20% federal rates.
- Counting begins the day after acquisition; the sale date is included.
- The applicable long-term rate depends on total taxable income, not the size of the gain alone.
- Part of a single gain can fall in the 0% band and part in the 15% band if it straddles the threshold.
How to count the one-year holding period
The IRS holding period begins the day after you acquire the asset — not the acquisition date itself. The sale date is included in the count. This means selling exactly one year after purchase is still short-term; you must sell at least one day after the one-year anniversary to qualify for long-term treatment.
Example: purchased January 15, 2024. Day one of the holding period is January 16, 2024. Selling on January 15, 2025 is 365 days — still short-term. Selling on January 16, 2025 is 366 days — long-term.
Calendar years do not reset the count. Crossing into a new year does not create long-term treatment; exact date arithmetic controls. Leap years are handled by the same rule.
How short-term capital gains are taxed
Short-term gains are added to your other ordinary taxable income and flow through the progressive federal income-tax brackets just like wages or interest. Because the brackets are progressive, different portions of the gain can fall in different brackets.
Example: a taxpayer with $48,000 of other ordinary income has a $10,000 short-term gain. In 2026 (single filer), the 12% bracket extends to $48,475 and the 22% bracket extends to $103,350. So $475 of the gain falls in the 12% bracket and $9,525 falls in the 22% bracket — the entire $10,000 is not taxed at 22%.
Worked example: the tax difference between 364 and 366 days
Assume a single filer in 2026 with $60,000 of other taxable income and a $20,000 capital gain from a stock sale.
Short-term scenario (364 days held): the $20,000 gain is added to $60,000 of ordinary income. In 2026, the 22% bracket for single filers covers income from $48,475 to $103,350. The gain falls entirely within the 22% bracket, producing an incremental federal tax of approximately $4,400.
Long-term scenario (366 days held): the $20,000 gain is stacked above the $60,000 of ordinary income. The 15% threshold for single filers is $49,450, which is already below $60,000, so the entire $20,000 gain is taxed at 15%, producing a federal capital-gains tax of $3,000.
Difference: $1,400 saved by holding two additional days. The actual saving depends on your specific income and filing status, but the principle holds across most situations.
How long-term capital gains are taxed
Long-term gains use the stacking method. Ordinary taxable income occupies the lower bands; qualified dividends and long-term gains are placed on top. The 2026 thresholds for single filers are: 0% rate up to $49,450 of total taxable income; 15% rate from $49,450 to $545,500; 20% rate above $545,500.
A taxpayer with $40,000 of ordinary income and a $15,000 long-term gain has $49,450 − $40,000 = $9,450 of space in the 0% band. The first $9,450 of the gain is taxed at 0% and the remaining $5,550 is taxed at 15%, for a federal capital-gains tax of $832.50 — not $2,250 (15% of the full gain).
Special holding-period rules
Inherited property may use a stepped-up basis and is generally treated as long-term regardless of the holding period of the estate.
Gifted property can involve complex dual-basis rules depending on whether there is a gain or loss at the time of transfer.
Certain mutual-fund distributions, Section 1256 contracts, collectibles, and employee stock options use different rate structures or holding-period rules not covered by the standard short-term/long-term framework.
How to use the Capital Gains Tax Calculator
Use the Capital Gains Tax Calculator to estimate short-term or long-term federal capital-gains tax on your investment sale. Enter the acquisition and sale dates and the calculator counts the holding period automatically.
Open the Capital Gains Tax CalculatorCommon mistakes to avoid
- Assuming that crossing into a new calendar year automatically creates long-term treatment — only the exact day count controls.
- Selling on the one-year anniversary rather than the day after, which leaves the gain short-term.
- Applying the 15% or 20% rate to the entire long-term gain without checking whether part of it falls in the 0% band.
- Overlooking that qualified dividends use the same rate bands and reduce the space available for capital gains.
- Ignoring special holding-period rules for inherited property, gifts, and certain distributions.
Practical takeaways
- Holding an investment for more than one year is one of the simplest ways to reduce federal capital-gains tax.
- The holding period begins the day after acquisition and includes the sale date.
- The applicable long-term rate depends on where the gain falls relative to the taxable-income thresholds for your filing status.
- A single gain can span two rate bands, with different portions taxed at different rates.
- Short-term gains can push you into a higher ordinary bracket, compounding their tax cost.
Frequently asked questions
An asset held for one year or less produces a short-term capital gain or loss. An asset held for more than one year produces a long-term capital gain or loss. The IRS counts from the day after acquisition through and including the sale date. Exactly one year is still short-term; one year and one day is long-term.
No. Each purchase creates a separate tax lot with its own acquisition date and holding period. If you buy shares on three different dates and sell some, the holding period of each lot sold is counted separately from that lot's acquisition date. It does not matter that you own other shares of the same security.
Capital-gain distributions paid by a mutual fund are classified by the fund as short-term or long-term based on how long the fund held the underlying securities. Long-term capital-gain distributions from a mutual fund are reported to you on Form 1099-DIV and are taxed at the long-term rates even if you held the fund shares for less than one year.
The rate depends on your total taxable income for the year, including both ordinary income and the gain itself. For 2026, single filers pay 0% on the portion of the gain that keeps total taxable income below $49,450, 15% on the portion between $49,450 and $545,500, and 20% on any portion above $545,500. Other filing statuses use different thresholds.
For federal purposes, holding more than one year can reduce or eliminate the tax on gains that fall within the 0% band. However, holding longer does not guarantee a 0% rate — it depends on your total taxable income. Investors with significant other income may owe 15% or 20% on long-term gains even after holding for years. Tax-advantaged accounts such as IRAs and 401(k) plans defer or eliminate capital-gains tax on gains realized inside the account.
Related calculators
Related guides
- How Capital Gains Tax Is CalculatedA plain-English guide to how the IRS taxes investment sales: adjusted basis, amount realized, holding-period rules, rate bands, and net proceeds.
- How Capital-Loss Carryovers WorkWhen capital losses exceed the annual deduction limit, the unused loss carries to future tax years. This guide explains the rules, character retention, and how to estimate the carryover.
- Net Investment Income Tax ExplainedThe 3.8% Net Investment Income Tax applies to investment income when MAGI exceeds a filing-status threshold. This guide explains who owes it, how it is calculated, and what counts as net investment income.
- How Federal Income Tax Brackets WorkBeing "in the 22% bracket" does not mean you pay 22% on everything — here is how progressive tax really works.
Sources and methodology
This article is based on general financial principles and information published by the authoritative primary sources below. Figures are illustrative and rounded to explain the concepts.
- IRS Topic No. 409 — Capital Gains and Losses
- IRS Publication 550 — Investment Income and Expenses
- IRS Revenue Procedure 2025-32 — 2026 Inflation Adjustments
- IRS Schedule D and Instructions
Rate thresholds apply to federal tax year 2026. Last reviewed: August 3, 2026.
About this article
Written and reviewed by the Smart Finance Calculators Editorial Team.
Published · Last reviewed
Financial disclaimer: Results are estimates for educational purposes only and are not professional financial, tax, legal or investment advice. Figures may not reflect your exact situation. Consult a qualified professional before making financial decisions.