Better Homeowners
Selling Colorado and the Colorado Lifestyle

Don't Let Capital Gains Tax Surprise You - 6/11/2025

If you've owned your home for a long time, chances are its value has increased—maybe even doubled, tripled, or more. But did you know that a law written in 1997 still limits the amount of capital gains tax exclusion, despite skyrocketing home prices?

Currently, homeowners can exclude up to $250,000 in gains if single or $500,000 if married filing jointly when selling their primary residence, as long as they've lived there for at least two of the last five years. But with today's home values, more sellers are finding themselves exceeding this exclusion and facing a significant tax bill.

More Homeowners Are Now Affected

In 2023, nearly 8% of home sales surpassed the $500,000 capital gains exclusion. However, in high-cost states like California (28.8%), Hawaii (23.8%), Washington, D.C. (22.1%), Massachusetts (17.9%), and Washington State (15.2%), the numbers were far higher, according to CoreLogic.

What Happens If You Exceed the Exclusion?

If a homeowner sells their home for more than the exclusion allows, the excess profit is subject to long-term capital gains tax rates of 15% to 20%, plus an additional 3.8% net investment income tax for high earners.

For example, if a married couple sells their home with $1 million in gains, they can exclude $500,000, but the remaining $500,000 is taxed at these rates. Depending on their income bracket, they could owe between $95,000 and $119,000 in taxes; an expense many homeowners don't anticipate.

How to Reduce Your Capital Gains Tax Liability

The key to minimizing capital gains tax is increasing your home's cost basis, which is done by tracking capital improvements made over the years. Many homeowners are aware that large-scale renovations count, but small-dollar upgrades also qualify and can add up significantly over time.

What qualifies as capital improvements:

  • Kitchen and bathroom remodels
  • New roofs, HVAC systems, and water heaters
  • Adding a deck, patio, or additional living space
  • Energy-efficient upgrades like new windows or solar panels
  • Permanent landscaping enhancements, like retaining walls or irrigation systems

However, repairs and maintenance (like painting, fixing leaks, or replacing worn carpet) typically do not qualify unless they are part of a larger renovation.

The Importance of Tracking Expenses

To take advantage of these tax-saving opportunities, homeowners must document their improvements throughout their entire homeownership.

  • Keep receipts for materials and labor
  • Take before-and-after pictures of major renovations
  • Save contractor invoices or permits for work done
  • Maintain a running list of all home upgrades

Without proper records, homeowners could lose out on thousands in potential tax savings.

Stay Informed and Plan Ahead

The capital gains tax law may not have adjusted to today's market, but smart homeowners can take proactive steps to minimize their tax burden. If you're thinking about selling, now is the time to gather your records and consult with a tax professional to ensure you're maximizing your cost basis.

For more information, download IRS Publication 523 and our Homeowners Tax Guide for a detailed look at what qualifies.

If you have any questions about how today's home values impact your potential sale, feel free to reach out...I'm happy to help!

Kathleen Harken CRS, GRI, SFR, AHWD Keller Williams Realty DTC Englewood, CO (303) 909-5990 My introduction to the world of real estate came at an early age, working alongside my father in the industry. This early exposure instilled in me a deep appreciation for the intricate dynamics of the field. After brief detours into investment banking, mortgage lending, and marketing, I found my true calling in real estate in 1995. My diverse background equips me with a unique perspective that I use in crafting informed and strategic solutions for my clients. With each client I serve, my primary goal is to cultivate a tailored and educational experience. I understand that every individual approaches the real estate process with distinct aspirations and requirements. My dedication to client education stands as a cornerstone of my practice. I firmly believe that an informed client is an empowered one. I take the time to elucidate the intricate details of the buying and selling process, ensuring that my clients make decisions with confidence and clarity. This commitment to education extends to navigating the ever-evolving market landscape, equipping clients with insights that enable them to make confident choices. I've also been an active participant in the real estate community. Serving as Chairman of the Board at the local board of REALTORS in 2005-2006, a state director at the Colorado Association of REALTORS, and roles in the Colorado state CRS chapter, I continually seek ways to contribute and stay attuned to industry trends and best practices. While my professional commitment is unwavering, I also relish the Colorado outdoors and adventure that comes with it. Whether scaling Colorado's peaks or enjoying the camaraderie of a hockey game, or a bike ride/run on one of the many trails around the city, I find solace in the exhilaration of these pursuits. And, amidst all these ventures, my greatest adventure has been the 25+-year journey of marriage to my husband, Dale, and our shared commitment to fostering and raising large breed dogs. A unique fact about me is my non-skiing status ... a quirk that adds a touch of individuality to my Colorado roots. With a profound dedication to professionalism, client education, and a keen understanding of market trends, I offer a comprehensive experience that places the client at the forefront. Navigating the real estate landscape can be complex, but with my guidance and educational approach, my clients are empowered to make informed choices that align with their goals. Contact Me Visit my Website Send a Referral Subscribe to Newsletter