US Tax Calculator

Capital Gains Tax Calculator

Estimate tax on long-term and short-term capital gains

Capital Gains Tax Calculator

$

Gains from assets held more than 1 year

$

Gains from assets held 1 year or less (taxed as ordinary income)

$

Interest, dividends, and other net investment income (subject to NIIT)

$

Your wages, salary, and other income excluding capital gains

Your Capital Gains Tax

Total Capital Gains Tax

$4,100.00

Long-Term Gains Tax:$3,000.00
Short-Term Gains Tax:$1,100.00
Net Investment Income Tax (3.8%):$0.00
Effective Rate on Gains:16.4%

How Capital Gains Tax Works

1. Holding Period

Assets held more than 1 year qualify for long-term (preferential) rates. Shorter holdings are short-term.

2. Preferential Rates

Long-term gains are taxed at 0%, 15%, or 20% depending on your total income and filing status.

3. Ordinary Rates

Short-term gains are added to your ordinary income and taxed at your regular marginal rate.

4. NIIT

A 3.8% tax applies to net investment income if your income exceeds the filing-status threshold.

Note: This is an estimate based on 2025 IRS rules. Actual capital gains tax may differ based on your full tax situation, losses, and basis adjustments.

US Tax Calculator 2025 - Free Federal & State Tax Calculator