Capital Gains Tax Rates and Strategies

Capital gains tax applies to the profit you make when selling an investment, real estate, or other asset. The federal tax rate depends on how long you hold the asset before selling. Long-term capital gains (assets held over one year) are taxed at rates of 0%, 15%, or 20% (IRC §1(h)), depending on your income level. Short-term capital gains (assets held one year or less) are taxed as ordinary income at your regular tax bracket, which can be as high as 37%. Holding an asset one additional day to convert a short-term gain to a long-term gain changes the applicable rate from up to 37% (short-term) to 0%, 15%, or 20% (long-term). Additionally, high-income earners may be subject to the 3.8% Net Investment Income Tax (NIIT) on top of capital gains tax.

For 2025, long-term capital gains rates are 0% for single filers with taxable income up to $48,350, 15% for income from $48,351 to $533,400, and 20% for income over $533,400. Married couples filing jointly have higher thresholds: 0% on income up to $96,700, 15% from $96,701 to $600,050, and 20% above that. Taxpayers in the 0% long-term capital gains bracket (taxable income below $96,700 MFJ) pay no federal tax on realized gains. If you're near the top of a bracket, you might spread asset sales across multiple years. Short-term capital gains are taxed as ordinary income, so a high-income earner with short-term gains could pay 37% federal tax plus state income tax. The calendar year in which an asset is sold determines the tax year and applicable rate. For example, if you're selling stock with a short-term gain in December, you might consider waiting until January to hold it longer than one year, changing the applicable rate from ordinary income rates to long-term capital gains rates.

Tax planning strategies exist to manage capital gains tax exposure. Tax-loss harvesting involves selling investments at a loss to offset gains. You can deduct up to $3,000 of net capital losses against ordinary income each year, with unlimited carryforwards to future years. Donating appreciated securities to charity instead of selling them lets you avoid capital gains tax entirely while claiming the full fair market value as a charitable deduction. For real estate, the Section 1031 exchange allows you to defer capital gains by reinvesting proceeds into other like-kind real property (per TCJA 2017, only real property qualifies). Additionally, step-up in basis provisions allow heirs to inherit assets at their fair market value at death, eliminating gains for the decedent. Long-term investors who hold assets for extended periods benefit from the power of compounding while deferring tax, a concept often called 'buy and hold.' Capital gains exposure affects overall tax planning, especially in years where you anticipate asset sales.