A capital gain is the profit you make when you sell an asset for more than you paid for it. Buy a stock for $10,000, sell it for $16,000, and you have a $6,000 capital gain. The same applies to bonds, real estate, businesses, cryptocurrency, and collectibles. If you sell for less than you paid, that is a capital loss. Only realized gains are taxed. If your stock doubles but you do not sell, you owe nothing. The tax bill arrives when you sell.
Short-Term vs. Long-Term
The tax rate depends on how long you held the asset. Sell after holding one year or less and the gain is short-term, taxed as ordinary income at your regular tax rate, just like wages. Hold for more than one year and the gain is long-term, taxed at lower preferential rates.
2026 Long-Term Capital Gains Rates
For assets sold in 2026, long-term gains are taxed at 0%, 15%, or 20% depending on your taxable income and filing status. Single filers: 0% up to $49,450 of taxable income, 15% from $49,451 to $545,500, 20% above $545,500. Married filing jointly: 0% up to $98,900, 15% from $98,901 to $613,700, 20% above $613,700. So a single filer with $80,000 of taxable income pays 15% on a long-term gain: $900 of tax on that $6,000 stock profit. A retiree with low taxable income can pay 0%. A few exceptions: gains on collectibles such as art and coins can be taxed up to 28%, depreciation recapture on real estate up to 25%, and high earners can owe an additional 3.8% net investment income tax above $200,000 of income ($250,000 for joint filers).
Capital Losses
Losses are useful. You can use capital losses to offset capital gains dollar for dollar, and if your losses exceed your gains, you can deduct up to $3,000 per year against ordinary income, carrying the rest forward to future years. Selling losers on purpose to harvest the tax benefit is called tax-loss harvesting.
What This Means for Investors
The holding period matters, but it should not run the decision. Waiting a few extra months to turn a short-term gain into a long-term one can cut the tax rate roughly in half, which is worth doing when the investment thesis is unchanged. But holding a deteriorating investment just for the tax treatment is letting the tax tail wag the dog. Two more things worth knowing. First, none of this applies inside retirement accounts: sales within a 401(k) or IRA generate no capital gains tax, and Roth accounts can eliminate the tax entirely. Second, the 0% bracket is a genuine planning tool. In a low-income year, realizing long-term gains can mean keeping every dollar of profit.
Conclusion
Capital gains are simply the profit on assets you sell, taxed more lightly the longer you hold. Know your holding period, know your bracket, and make the investment decision first and the tax decision second.
Winchell House 
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