What Are Capital Gains?
In plain English
A capital gain is the profit realized when you sell a capital asset — such as stocks, real estate, or a business — for more than your original purchase price (cost basis). Capital gains are taxable income, but the rate depends on how long you held the asset. Assets held over one year qualify for lower long-term capital gains tax rates, while shorter holding periods result in higher short-term rates.
What Is the Difference Between Short-Term and Long-Term Capital Gains?
Short-term capital gains apply to assets sold within one year of purchase and are taxed at your ordinary income tax rate, which can be as high as 37%. Long-term capital gains apply to assets held for more than one year and are taxed at preferential rates of 0%, 15%, or 20% depending on your taxable income. This difference can dramatically affect your after-tax investment returns.
How Can You Reduce Capital Gains Taxes?
Several strategies reduce capital gains taxes legally. Tax-loss harvesting involves selling underperforming investments to offset gains. Holding investments for over a year to qualify for long-term rates is one of the simplest strategies. Investing through tax-advantaged accounts like IRAs and 401(k)s shelters gains from immediate taxation. Charitable donation of appreciated assets avoids capital gains entirely while providing a deduction.
What Is a Capital Loss and How Does It Help?
A capital loss occurs when you sell an investment for less than your cost basis. Capital losses offset capital gains dollar for dollar, reducing your taxable gain. If losses exceed gains in a given year, you can deduct up to $3,000 against ordinary income and carry forward remaining losses to future tax years. Strategic loss harvesting can meaningfully reduce your annual tax bill.
Frequently asked questions
Do I owe capital gains tax if I don't sell?
No. Capital gains are only taxed when you realize them by selling the investment. Unrealized gains — appreciation on investments you still hold — are not taxable. This is one advantage of a long-term buy-and-hold strategy: you defer taxes indefinitely while your investments continue to compound.
Are capital gains taxed in retirement accounts?
Not immediately. In traditional IRAs and 401(k)s, gains grow tax-deferred and are taxed as ordinary income upon withdrawal. In Roth accounts, gains grow tax-free and qualified withdrawals are not taxed at all. This sheltering effect is a key reason tax-advantaged retirement accounts are so powerful for long-term investors.
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Related terms
Stock
A stock represents a share of ownership in a company. When you buy stock, you become a part-owner of that business and can benefit from its growth through price appreciation and dividends.
Index Fund
An index fund is a type of investment fund that tracks a specific market index, like the S&P 500. It offers broad diversification at very low cost and is a cornerstone of passive investing.
Value Investing
Value investing is a strategy of buying stocks that appear to be trading below their intrinsic value. Championed by Benjamin Graham and Warren Buffett, it involves finding undervalued companies with strong fundamentals.
Growth Investing
Growth investing focuses on companies expected to grow revenues and earnings faster than the market average. Growth investors accept premium valuations in exchange for exposure to businesses with exceptional expansion potential.
Dividend
A dividend is a portion of a company's profits paid out to shareholders, typically on a quarterly basis. Dividends provide investors with regular income in addition to any stock price appreciation.