Published February 26, 2026

Understanding Capital Gains: What You Need to Know for Tax Time

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Written by Enid Daniel

Understanding Capital Gains: What You Need to Know for Tax Time header image.

If you sold a home, rental property, or land last year, you may owe capital gains tax on the profit. The good news? Many homeowners qualify for major tax breaks — especially when selling a primary residence.

Here’s a simple breakdown of how it works.

What Is a Capital Gain in Real Estate?

A capital gain is the difference between:

What you sold the property for
minus
What you paid for it (plus certain improvements and costs)

The amount you originally paid — plus qualifying improvements — is called your “basis.”

The IRS explains capital gains here:
👉 https://www.irs.gov/taxtopics/tc409

And more about figuring your basis here:
👉 https://www.irs.gov/taxtopics/tc703

The Big Tax Break: The Home Sale Exclusion (Section 121)

If you sold your primary residence, you may be able to exclude:

  • Up to $250,000 of gain if you’re single
  • Up to $500,000 of gain if you’re married filing jointly

To qualify, you generally must have:

  • Owned the home for at least 2 of the last 5 years, and
  • Lived in the home as your primary residence for 2 of the last 5 years

This is often called the Section 121 exclusion, and for many homeowners, it means no capital gains tax at all.

IRS details here:
👉 https://www.irs.gov/taxtopics/tc701

How to Calculate Your Gain (Simple Example)

Let’s say:

  • You bought your home for $500,000
  • You spent $50,000 on qualifying improvements (new roof, kitchen remodel, etc.)
  • You sold it for $800,000

Your adjusted basis = $550,000
Your gain = $250,000

If you qualify for the $250,000 exclusion (single filer), you may owe no federal capital gains tax.

What Counts as a “Home Improvement”?

Improvements that add value, extend the life of the home, or adapt it to new uses can increase your basis and reduce your taxable gain.

Examples:

  • Roof replacement
  • Major remodels
  • Room additions
  • HVAC replacement

Routine repairs (like patching drywall or fixing a leak) usually do not count.

IRS guidance on basis adjustments:
👉 https://www.irs.gov/taxtopics/tc703

What If It’s a Rental or Investment Property?

The home sale exclusion usually does not apply to rental or investment properties.

Key differences:

  • Gains are taxable.
  • If you claimed depreciation, you may owe depreciation recapture tax.
  • Long-term capital gains rates (0%, 15%, or 20%) may apply if you owned the property more than one year.
  • High-income earners may also owe the 3.8% Net Investment Income Tax.

More IRS information on selling business or rental property:
👉 https://www.irs.gov/forms-pubs/about-publication-544

Short-Term vs. Long-Term Gains

If you owned the property:

  • One year or less → Short-term gain (taxed at regular income rates)
  • More than one year → Long-term gain (usually lower tax rates)

IRS overview here:
👉 https://www.irs.gov/taxtopics/tc409

Do You Always Have to Report the Sale?

Even if your entire gain is excluded, you may still need to report the sale — especially if you received a Form 1099-S at closing.

Instructions for reporting real estate sales:
👉 https://www.irs.gov/forms-pubs/about-schedule-d-form-1040

Final Thoughts

Real estate capital gains don’t have to be intimidating. The most important things to remember are:

  1. Keep records of improvements.
  2. Understand whether the property was your primary residence or an investment.
  3. Know that most primary home sellers qualify for a large exclusion.

If you sold property last year, it’s worth reviewing the rules carefully — especially before filing your return. If you'd like to setup some time to review your sale with us to see if any of this applies to you, please don't hesitate to reach out. Call us at 206-489-4920

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