What Is Capital Gains Tax? How to Pay Less When You Sell Investments

When you sell an investment for more than you paid, the profit is called a capital gain — and the IRS wants a share. But capital gains are taxed differently depending on how long you held the asset. Understanding the rules can save you thousands.

Short-Term vs Long-Term Capital Gains

Short-term gains (held less than 1 year) are taxed as ordinary income — the same rate as your salary. Long-term gains (held more than 1 year) get preferential tax rates: 0%, 15%, or 20% depending on your income. This difference alone is worth holding investments for at least 1 year.

2025 Long-Term Capital Gains Tax Rates

• 0% — Single filers up to $48,350; Married filing jointly up to $96,700
• 15% — Single up to $533,400; Married up to $600,050
• 20% — Single above $533,400; Married above $600,050
• Plus 3.8% Net Investment Income Tax for high earners (above $200K single / $250K married)

Legal Strategies to Reduce Capital Gains Tax

• Hold investments 1+ year to qualify for long-term rates
• Tax-loss harvesting: sell losers to offset gains
• Invest through tax-advantaged accounts (IRA, 401k) — gains not taxed until withdrawal
• Time large sales for low-income years (retirement, sabbatical)
• Donate appreciated stock to charity — avoid gains entirely

Capital Gains on Home Sales

Your primary residence gets special treatment: if you've lived there 2 of the last 5 years, you can exclude up to $250,000 in gains ($500,000 married). Most homeowners owe zero capital gains tax when selling their home.