Capital Gains Tax Guide: Short-Term vs Long-Term Rates, Federal Brackets & Strategies
Capital gains tax is levied on the profit realized from selling a capital asset (such as stocks, cryptocurrencies, or real estate) above its adjusted cost basis. Assets owned for one year or less trigger short-term capital gains taxed at ordinary income rates (up to 37%), whereas assets held for more than 365 days qualify for long-term preferential rates of 0%, 15%, or 20% depending on taxable income.
Key Takeaway Facts
- The holding period begins the day after acquisition and ends on the trade settlement execution date.
- Under 2026 federal rules, single filers with taxable income up to $47,025 pay 0% federal long-term capital gains tax.
- High earners with MAGI exceeding $200,000 (single) or $250,000 (married filing jointly) are subject to an additional 3.8% Net Investment Income Tax (NIIT).
- Capital losses can offset unlimited capital gains plus up to $3,000 of ordinary wage income per tax year, with remaining losses carrying forward indefinitely.
- Homeowners selling their primary residence can exclude up to $250,000 in capital gains ($500,000 for married couples) under IRC Section 121.
Capital Gains Tax Calculator
Calculate short-term and long-term capital gains taxes and net proceeds.
1. Defining Adjusted Cost Basis and Net Realized Gain
2. Short-Term vs. Long-Term Tax Arbitrage
Frequently Asked Questions
What is tax-loss harvesting?
Tax-loss harvesting involves deliberately selling underperforming investments at a loss before the end of the tax year to offset realized capital gains. This minimizes your net taxable gain and can offset up to $3,000 of ordinary income.
Do state taxes apply to capital gains?
Yes, most US states tax capital gains as ordinary state income at rates ranging from 0% (states with no income tax like Texas, Florida, Nevada) up to over 13% in high-tax jurisdictions like California.
Editorial Review & Fact-Checking Assurance
This guide was researched and drafted by the ToolQix Taxation & Financial Architecture Team and technically verified by Certified Public Accountant (CPA) & Tax Attorney under ToolQix's strict accuracy protocols. Formulas, calculations, and instructions were independently tested against current industry specifications.