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Capital Gains Tax Calculator — 免费在线计算器 | HomeCalcPro
Capital Gains Tax Calculator精准计算，提供行业标准公式与即时测算结果。
Parameters & Values
Computed Financial Summary
Real-timeAdjust parameters to update tax and amortization results.
US Capital Gains Tax Formula
Transparent mathematical methodology explained in plain English.
Taxable Gain = Sale Proceeds - Cost Basis | Long-Term Tax = Gain × Rate (0%, 15%, or 20%) + NIIT (3.8%)Assets held longer than one year qualify for favorable long-term tax rates (0%, 15%, 20%) rather than higher ordinary short-term income tax brackets.
Variables Explained:
- Purchase Price / Basis ($): Total original cost to acquire asset plus trading commissions.
- Sale Proceeds ($): Gross cash received upon selling asset.
- Holding Period: Short-term (1 year or less) or Long-term (More than 1 year).
$45,000 Capital Gain on Stock Held for 3 Years (Taxable Income: $120,000 Single)
Applying federal 15% long-term capital gains tax bracket.
- Net Capital Gain: $75,000 - $30,000 = $45,000.
- Applicable Long-Term Bracket: 15% (Taxable income between $47,025 and $518,900).
- Federal Tax Due: $45,000 × 0.15 = $6,750.
- Net Profit Retained: $45,000 - $6,750 = $38,250.
常见问题解答 (FAQ): Capital Gains Tax Calculator
Click any question below to expand quick answers, formulas, and expert tips.
Who qualifies for the 0% long-term capital gains rate in the US?
For 2024, single filers with taxable income up to $47,025 (married couples up to $94,050) pay 0% federal capital gains tax on long-term investments.
What is the Net Investment Income Tax (NIIT)?
An additional 3.8% Medicare surtax applies to net investment income for single filers with MAGI over $200,000 (married couples over $250,000).