Capital Gains Tax Calculator (2026)
Calculate federal capital gains tax for stocks, crypto, and real estate. Includes LTCG rates, NIIT, state tax, and primary residence exclusion for 2026.
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Capital Gain
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Applicable Tax Rate —
Tax Owed —
Net After Tax —
Extended More scenarios, charts & detailed breakdown ▾
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Adjusted Capital Gain
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Tax Rate —
Tax Owed —
Net After Tax —
Professional Full parameters & maximum detail ▾
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Adjusted Capital Gain
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Federal Capital Gains Tax —
State Capital Gains Tax —
NIIT (3.8%) —
Total Tax Owed —
Effective Tax Rate on Gain —
Net After All Taxes —
Note: Hold 1+ year to save —
How to Use This Calculator
- Enter the Purchase Price (cost basis) and Sale Price of your asset.
- Select whether your holding period is short-term (1 year or less) or long-term (over 1 year).
- Enter your filing status and taxable income to determine which rate bracket applies.
- Use the Real Estate tab to apply the primary residence exclusion.
- Use the Professional tab for state tax, NIIT, and loss harvesting offsets.
Formula
Capital Gain = Sale Price − Adjusted Cost Basis
Long-Term Tax = Gain × LTCG Rate (0%, 15%, or 20%)
Short-Term Tax = Gain × Ordinary Income Rate
NIIT = Gain × 3.8% (if MAGI > $200K single / $250K married)
Long-Term Tax = Gain × LTCG Rate (0%, 15%, or 20%)
Short-Term Tax = Gain × Ordinary Income Rate
NIIT = Gain × 3.8% (if MAGI > $200K single / $250K married)
Example
Example: You bought stock for $10,000 and sold for $25,000 after 2 years. Gain = $15,000. With taxable income of $90,000 (single), the 15% LTCG rate applies. Federal tax = $15,000 × 15% = $2,250. Net proceeds = $22,750.
Frequently Asked Questions
- For 2026, long-term capital gains rates are 0% (single filers with taxable income up to $48,350), 15% (up to $533,400), and 20% (above $533,400). Married filing jointly thresholds are $96,700, $600,050, and above.
- The Net Investment Income Tax (NIIT) is an additional 3.8% tax on investment income including capital gains. It applies to single filers with MAGI above $200,000 and married filers above $250,000.
- If you owned and lived in the home for at least 2 of the last 5 years, you can exclude up to $250,000 of gain (single) or $500,000 (married filing jointly) from capital gains tax.
- Assets held 1 year or less are taxed as ordinary income (short-term). Assets held more than 1 year qualify for preferential long-term rates of 0%, 15%, or 20%.
Related Calculators
Sources & References (5) ▾
- IRS — Topic 409: Capital Gains and Losses — Internal Revenue Service
- IRS — Publication 550: Investment Income and Expenses — Internal Revenue Service
- Tax Foundation — Capital Gains Tax Rates — Tax Foundation
- IRS — Net Investment Income Tax (Topic 559) — Internal Revenue Service
- IRS — Schedule D Instructions — Internal Revenue Service