Capital Gains Tax Calculator
Estimate tax on investment profits. Compare short-term vs long-term capital gains rates. Includes Net Investment Income Tax (NIIT).
Frequently Asked Questions
What is the difference between short-term and long-term capital gains?
Short-term gains (assets held less than 1 year) are taxed as ordinary income (10-37%). Long-term gains (held over 1 year) are taxed at preferential rates: 0%, 15%, or 20% depending on your income.
What is NIIT?
The Net Investment Income Tax (NIIT) is an additional 3.8% tax on investment income for individuals with modified AGI over $200,000 (single) or $250,000 (married filing jointly).
Can I deduct capital losses?
Yes. Capital losses offset capital gains dollar-for-dollar. If losses exceed gains, you can deduct up to $3,000 ($1,500 if married filing separately) against ordinary income. Remaining losses carry forward to future years.