Will You Face a Huge Tax Bill When Selling Your Home? What Many Homeowners Don't Know About Capital Gains Tax

As home values have risen significantly over the past several years, many homeowners are asking questions such as:

• "I bought my home 30 years ago. How much tax will I owe if I sell?"

• "My home's value has increased substantially. Will capital gains taxes take a large portion of my profit?"

• "Do I have to pay taxes when I sell my primary residence?"

  
  

These are especially common concerns among homeowners who have lived in their homes for many years.

According to a June 11, 2026 article from Realtor.com, growing home values across the country have increased interest in capital gains taxes. However, many homeowners are unaware of the tax benefits that may be available to them.

What Is Capital Gains Tax?

Capital gains tax is a tax on the profit earned when you sell an asset, such as real estate or stocks.

For example:

• Purchase price in 2000: $250,000

• Sale price in 2026: $850,000

The difference is a $600,000 gain.

However, the actual calculation is often more complex than simply subtracting the purchase price from the sale price. Various factors may affect your taxable gain, including:

• Closing costs

• Certain purchase expenses

• Capital improvements

• Selling expenses

• Other adjustments to your cost basis

  
  

Many Homeowners May Owe Little or No Capital Gains Tax

The good news is that U.S. tax law provides significant exclusions for primary residences.

Currently, homeowners may qualify for:

Single Filers

• Up to $250,000 of capital gain excluded from taxation

  
  

Married Filing Jointly

• Up to $500,000 of capital gain excluded from taxation

  
  

To qualify, homeowners generally must:

✔ Have owned and lived in the home for at least two of the past five years

✔ Have used the property as their primary residence

✔ Not have claimed the same exclusion on another home sale within the previous two years

For many homeowners, these exclusions can significantly reduce or even eliminate capital gains tax liability.

Real-Life Examples

Example 1

A married couple purchased a home for $350,000 fifteen years ago.

They sell the home today for $800,000.

• Gain: $450,000

• Exclusion available: $500,000

Result: No federal capital gains tax on the gain.

Example 2

A married couple purchased a home for $250,000.

They sell it for $1,000,000.

• Gain: $750,000

• Exclusion available: $500,000

• Taxable gain: $250,000

Result: Taxes may apply only to the portion exceeding the exclusion amount.

Why Remodeling Receipts Matter

Many long-term homeowners discard records from renovation projects over the years.

That can be a costly mistake.

Certain capital improvements may increase your home's cost basis, which can reduce your taxable gain.

Examples may include:

• Complete kitchen remodels

• Bathroom renovations

• Roof replacement

• New windows

• Home additions

• Finished room expansions

• Full HVAC system replacement

  
  

In contrast, routine maintenance expenses such as painting, minor repairs, landscaping, or cleaning generally do not qualify as capital improvements.

This is why keeping renovation contracts, invoices, and receipts can be extremely valuable when it comes time to sell.

Investment Properties Are Different

The information above generally applies to primary residences.

Different rules may apply if the property is:

• A rental home

• An investment condominium

• A multi-unit investment property

  
  

Investment properties may be subject to additional tax considerations, including depreciation recapture, which can create significant tax consequences.

For investment properties, consulting with a qualified CPA or tax professional before selling is highly recommended.

Why This Issue Matters More Today

One reason capital gains taxes have become a growing concern is that the exclusion amounts have remained unchanged since 1997:

• $250,000 for single filers

• $500,000 for married couples filing jointly

• 
  

Meanwhile, home prices have increased dramatically over the past several decades.

As a result, more homeowners are finding that their gains may exceed the exclusion limits than was the case in previous years.

Chicago Suburban Homeowners Should Pay Special Attention

Homeowners in highly desirable Chicago suburban communities such as:

• Naperville

• Northbrook

• Glenview

• Buffalo Grove

• Lincolnshire

• Barrington

• Lake Forest

may have experienced substantial appreciation over the last 20 to 30 years.

In some cases, homes have doubled or tripled in value since their original purchase.

Before listing your home, it's worth reviewing:

✔ Estimated sale price

✔ Current cost basis

✔ Major renovation expenses

✔ Estimated net proceeds

✔ Potential capital gains exposure

You may discover that your tax liability is much lower than expected—or in some cases, higher than anticipated.

Final Thoughts

When selling a home, the most important number isn't necessarily the sale price.

It's how much money you ultimately keep after expenses and taxes.

For homeowners who have owned their property for many years, reviewing potential capital gains tax implications before selling can help avoid surprises and improve financial planning.

If you're considering selling your home, it's important to evaluate not only your home's market value but also your estimated net proceeds.

I'd be happy to help you understand your home's current market value, estimate potential proceeds, and discuss key considerations before putting your property on the market.