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Real Estate Capital Gains Tax Calculator

Estimate your federal tax liability when selling a home or investment property. Includes the Section 121 primary residence exclusion and long-term capital gains rates.

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Real Estate Capital Gains Tax Calculator

Estimate your federal tax liability when selling a home or investment property. Includes t...

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📊 Capital Gains Tax Estimate
Adjusted Cost Basis
Total Gain
§121 Exclusion
Taxable Gain
Tax Rate
Estimated Tax Owed

*Federal tax only. State taxes apply separately. Consult a tax attorney or CPA before filing.

What is the Capital Gains Tax Calculator?

When you sell a property for more than you paid, the profit is a capital gain — and it may be taxable. The IRS taxes real estate gains differently based on how long you held the property and whether it was your primary residence. Short-term gains (held under 1 year) are taxed as ordinary income. Long-term gains (held 1+ years) receive preferential rates of 0%, 15%, or 20%. Primary residence sellers may exclude up to $250,000 ($500,000 for married couples) of gain under Section 121.

How to Use This Calculator

  • 1Enter your original purchase price and the property's sale price.
  • 2Add any capital improvements (renovations, additions) and selling costs (commissions, fees).
  • 3Select whether you held the property under or over 1 year.
  • 4Choose your filing status — this determines your capital gains tax bracket.
  • 5Indicate whether this is your primary residence to apply the Section 121 exclusion.
  • 6Click Calculate to see your adjusted basis, taxable gain, and estimated tax.

⚖️ Attorney's Role

A real estate attorney can help you structure a sale to minimize tax exposure — from timing the closing to coordinating with a 1031 exchange or installment sale. If you're unsure whether you qualify for the Section 121 exclusion (e.g., partial use, divorce situations, or inherited property), legal counsel is essential.

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Frequently Asked Questions

Everything you need to know about capital gains tax in real estate transactions

It depends on your gain, holding period, and filing status. If you've lived in the home 2 of the last 5 years, you can exclude up to $250,000 (single) or $500,000 (married) of gain tax-free. Remaining gains are taxed at 0%, 15%, or 20% for long-term gains. Our calculator estimates your total liability.
Section 121 of the IRS tax code allows homeowners to exclude up to $250,000 ($500,000 married) of capital gain from the sale of their primary residence — provided they've owned and lived in the home as their main home for at least 2 of the 5 years before selling. This exclusion can dramatically reduce or eliminate your tax bill.
For a primary residence, the exclusion applies regardless of whether you reinvest. However, for investment properties, simply reinvesting doesn't eliminate taxes — you need a formal 1031 like-kind exchange to defer gains. Our 1031 Exchange Calculator can help you plan that strategy.
Inherited property receives a 'stepped-up basis' equal to the fair market value at the date of death. This means you typically owe little to no capital gains tax if you sell shortly after inheriting. Consult an estate attorney to understand your specific stepped-up basis.
Yes. Primary residences qualify for the Section 121 exclusion and don't require depreciation recapture. Investment properties don't get the exclusion, and you must recapture any depreciation you've taken at a 25% rate. Long-term gain on the remaining amount is taxed at 0–20%.

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