Capital Gains Tax Calculator (2026)
Estimate your federal tax on investment profits for the 2026 tax year. Compare preferential long-term rates (0%, 15%, 20%) with short-term ordinary income rates.
Investment Capital Gains Calculator
Capital gains brackets and thresholds are modeled under Internal Revenue Code (IRC) § 1(h) and the 2026 statutory inflation adjustments in IRS Revenue Procedure 2025-38. Calculations execute 100% locally in your web browser. Reviewed and updated by the TaxCalcHub Editorial Team for 2026.
Official 2026 Long-Term Capital Gains Tax Brackets
Unlike ordinary income, long-term capital gains benefit from three favorable tax brackets (0%, 15%, and 20%):
| Filing Status | 0% Tax Rate (Tax-Free) | 15% Tax Rate | 20% Maximum Rate |
|---|---|---|---|
| Single | Up to $48,350 | $48,351 to $533,400 | Over $533,400 |
| Married Filing Jointly | Up to $96,700 | $96,701 to $600,050 | Over $600,050 |
| Head of Household | Up to $64,750 | $64,751 to $566,700 | Over $566,700 |
| Married Filing Separately | Up to $48,350 | $48,351 to $300,025 | Over $300,025 |
Essential Guide to U.S. Capital Gains Tax
1. Short-Term vs. Long-Term Capital Gains
The duration you own an investment before selling determines how heavily it is taxed:
- Short-Term Capital Gains (Held 1 year or less): Taxed as ordinary income at rates up to 37%. Day trading, flipping assets, or selling stocks held under 366 days incurs this higher rate.
- Long-Term Capital Gains (Held more than 1 year): Taxed at discounted preferential rates of 0%, 15%, or 20%, offering substantial tax savings.
2. The 0% Tax-Free Bracket Opportunity
Many taxpayers are surprised to learn that long-term capital gains can be completely federal tax-free. If your total taxable income (including wages and gains) remains under $48,350 as a single filer ($96,700 for married couples), your federal capital gains tax rate is exactly 0%.
3. Net Investment Income Tax (NIIT 3.8%)
High-earning investors may be subject to an additional 3.8% Net Investment Income Tax under IRC § 1411 if Modified Adjusted Gross Income (MAGI) exceeds:
- $200,000 for Single or Head of Household filers
- $250,000 for Married Filing Jointly
- $125,000 for Married Filing Separately
4. Tax-Loss Harvesting
If you have losing investments, you can sell them to offset capital gains dollar-for-dollar. If net losses exceed gains, you can deduct up to $3,000 against ordinary income each year and carry forward remaining losses indefinitely.