FSBO Tax Implications: Capital Gains and Deductions for Sellers (2026)

Selling your home has real tax consequences. The good news: the IRS offers one of the most generous tax breaks in the tax code for homeowners. The bad news: most FSBO sellers do not know the rules until tax season.

Here is a practical overview of what you need to plan for.

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The Capital-Gains Exclusion (Section 121)

If you sell your primary residence, up to $250,000 of profit is tax-free for single filers, and $500,000 for married couples filing jointly.

To qualify, you must meet the ownership and use test:

• You owned the home for at least 2 of the last 5 years before the sale
• You lived in the home as your primary residence for at least 2 of the last 5 years
• You have not claimed the exclusion on another home sale within the prior 2 years

There are partial exclusions available for job relocations, health reasons, and unforeseen circumstances.

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How to Calculate Your Gain

Capital Gain = Sale Price - (Purchase Price + Improvements + Selling Costs)

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Tax-Deductible Selling Costs for FSBO Sellers (Schedule D Form 8949)

While your home-sale profit may be excluded, proper documentation is still required. Keep records of:

• Advertising and marketing -- photography, MLS flat fee, social-media ads, yard signs
• Legal and professional fees -- attorney review, title search
• Transfer taxes and recording fees
• Title insurance premiums (seller-paid portion)
• Home warranty (if offered to the buyer)
• Survey costs

These reduce your taxable gain and are essential if the sale exceeds your exclusion amount (investment properties or second homes).

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Investment Properties and Second Homes

The Section 121 exclusion does not apply to:

• Rental properties (unless you lived in the property for 2 of the 5 years)
• Second homes or vacation properties
• Properties acquired through a 1031 exchange

For these, capital-gains tax applies at 0 percent, 15 percent, or 20 percent depending on your income bracket. Long-term gains apply if you owned the property for more than one year.

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State Tax Considerations

Some states tax capital gains differently:

• No state income tax: Texas, Florida, Arizona, Nevada, Washington
• Full state tax on gains: California, New York, Minnesota, Oregon
• Partial exemptions: Some states offer a deduction on top of the federal exclusion

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Key Tax Deadlines

The buyer's title company will typically file Form 1099-S (Proceeds from Real Estate Transactions) with the IRS. Even if your entire gain is excluded, you should keep the 1099-S for your records.

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FSBO-Specific Tax Tips

1. Track every selling expense -- even small items add up and reduce your gain
2. Document capital improvements with receipts, permits, and contractor invoices
3. Understand the "2 of 5 years" rule before listing -- partial exclusion is possible if you lived in the home for at least 12 months
4. If your gain exceeds the exclusion, consult a CPA for strategies like partial deferrals or installment sales
5. Do not ignore state taxes -- your state may have its own rules and forms

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When to Call a CPA

• Your gain exceeds the $250K / $500K exclusion
• The property was a rental or used for business
• You are divorcing and splitting the proceeds
• You inherited the property and are unsure of the stepped-up basis
• You sold property in more than one state

A one-hour consultation ($150 to $300) can save thousands in surprises.

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Focus on Your Sale, Let Sellabl Handle Marketing

Sellabl automates your FSBO marketing so you can focus on closing and tax planning. Visit sellabl.app.

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Disclaimer: This article is educational and not tax advice. Tax laws change. Consult a licensed CPA or tax professional for guidance specific to your situation and jurisdiction.