Capital gains

Capital gains

Authors

Angelina Lam, EA, Shelby Whitefield, CPA

|

Read time: 

4 minutes

Published date: 

28 July 2025

Capital gains are profits you make from selling a capital asset. Learn the difference between short-term and long-term capital gains and how taxes work for each.

What are capital gains?

Capital gains are any profits realized from the sale of a capital asset. These profits are classified as either short-term or long-term capital gains, depending on whether the asset was held for shorter or longer than one year. Long-term capital gains qualify for a lower tax rate than short-term capital gains, which are taxed at the same rates as ordinary income.

Important note: While we’re here to help you understand how short- and long-term capital gains taxes work, we aren’t giving tax advice in this article. We recommend working with your own tax advisor or CPA.

What assets are taxed as capital gains?

Most investment holdings and other important possessions—including your home—are considered capital assets. Any profits from selling these assets are thus taxed as capital gains. Common examples of assets that might generate significant capital gains include:

  • Stock in a public or private company

  • Bonds

  • Real estate

  • Cars

  • Boats

  • Gems and jewelry

  • Cryptocurrency and NFTs

Other asset types are classified as noncapital assets and are not subject to capital gains tax but may be subject to other types of taxes. These may include:

  • Merchandise for sale to customers (inventory)

  • Patents, inventions, and copyrights

  • Certain commodities derivatives

  • Certain hedging transactions

Short-term capital gains vs. long-term capital gains

A short-term capital gain is any profit realized from the sale of a capital asset after one year or less of ownership. Short-term capital gains are taxed at the seller’s marginal tax rate, the same rate that’s applied to personal income. In other words, the government taxes short-term capital gains the same way it taxes your salary (income tax).

A long-term capital gain is any profit realized from the sale of a capital asset after more than a year of ownership. Long-term capital gains are taxed at a lower rate than short-term gains and income taxes.

Short-term capital gains

Long-term capital gains

Length of ownership (holding period)

≤ one year

> one year

Tax rate

Marginal (the same as ordinary income tax rate)

Preferential rates (lower than ordinary income)

Capital gains tax rates for 2025 

Capital gains become taxable in the year those gains are realized. So if you sold stock in a private company in 2025, then you’ll owe capital gains tax when you file your tax return in 2026.

Short-term capital gains tax rate

Short-term capital gains are taxed at the seller’s marginal income rate. This rate ranges from 10% to 37%, depending on the filer’s federal income tax bracket and filing status. 

For the 2025 tax filing year (due April 2026), the marginal rates are as follows:

Income for single filers

Income for married couples filing jointly

2025 marginal tax rate

> $626,350

> $751,600

37%

> $250,525

> $501,050

35%

> $197,300

> $394,600

32%

> $103,350

> $206,700

24%

> $48,475

> $96,950

22%

> $11,925

> $23,850

12%

< $11,925

< $23,850

10%

Source: Internal Revenue Service (IRS)

Long-term capital gains tax rate

Long-term capital gains are taxed at a rate of 0%, 15% or 20%, again depending on the filer’s tax bracket and filing status. The long-term capital gains rate is lower than the marginal rate, sometimes significantly so. 

Income for single filers

Income for married filing separately

Income for married filing jointly and qualifying surviving spouse

Income for head of household

2025 long-term capital gains tax rate

> $518,900

> $291,850

> $583,750

> $551,350

20%

> $47,025 but
≤ $518,900

> $47,025 but
≤ $291,850

> $94,050 but
≤ $583,750

> $63,000 but
≤ $551,350

15%

≤ $47,025

≤ $47,025

≤ $94,050

≤ $63,000

0%

Source: IRS

For example, a married couple filing jointly with $400,000 in taxable income would pay 32% tax on any short-term capital gains, based on 2025 tax rates. That same couple would pay 15% tax on any long-term capital gains. A single filer with $40,000 in taxable income would pay 12% short-term capital gains tax and 0% long-term capital gains tax. 

Long-term capital gains exceptions above 20%

Long-term capital gains from a few select capital assets are taxed at a higher rate than most others. Most notably, long-term capital gains from selling Section 1202 qualified small business stock (QSBS) that is excluded based on the phased three-year or four-year holding period is taxed at a maximum 28% rate; any remaining capital gain is taxed at the normal 20% rate. 

The sale of art and other collectibles are also taxed at 28% and the portion of any unrecaptured Section 1250 gain from selling Section 1250 real property (such as commercial buildings, warehouses, or rental properties) is taxed at a maximum 25% rate.

What is a capital loss?

Capital losses are the opposite of capital gains. If someone sells a capital asset for less than they paid for it, they incur a capital loss. 

How are capital losses taxed?

Short-term capital losses and long-term capital losses receive the same tax treatment. In both cases, the taxpayer can use any capital losses to offset capital gains from the sale of other capital assets and reduce their overall tax bill. However, the maximum net loss you can claim in any year is $3,000, and any excess will carry forward. 

Capital gains taxes & AMT for stock options

When you exercise stock options and sell the stock later for a profit, you’ll likely owe capital gains taxes. Whether you pay short-term or long-term capital gains taxes depends on how long you’ve held the stock, like any other capital asset.

Another tax to keep in mind specifically for incentive stock options (ISO) is the alternative minimum tax (AMT), which applies only to those who bought ISOs but sold them in a different tax year. AMT is calculated independently from your regular income tax calculation and you must pay whichever calculation is higher. You cannot use capital losses to offset any AMT income triggered by the exercise of your ISOs.

→ Learn more about stock option taxes.

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Angelina Lam, EA
Angelina Lam is an Enrolled Agent (EA) and Senior Tax Advisor at Carta. She has eight years of tax experience, specializing in tax advisory and consulting for individuals and their equity compensation.
Shelby Whitefield, CPA
Shelby is a CPA with over 10 years of experience in tax accounting and compliance. Currently, Shelby works in Tax Operations at Carta, helping to bridge the gap between technical tax advisory and product development to build better solutions for customers.

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