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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!

JACK KOUMBIS ABR, AHWD, GREEN, RENE, SFR, SRS KELLER WILLIAMS TOWN LIFE TENAFLY, NJ (201) 925-8825 LICENSED BROKER ASSOCIATE NJ, LICENSED BROKER OF RECORD NEW YORK JACK KOUMBIS started working at an early age in his family owned restaurants. His passion for the hospitality industry and his service mentality led him many successes over his 40+ year career. Operating multi units in both New York and New Jersey with hundreds of employees, Jack has a tremendous business background which serves him well as a Realtor Licensed in New York and New Jersey. In addition to his 40+ years of working in restaurants, private clubs, and hotels, Jack has served for more than 13 years on the Board of Directors of the New Jersey Restaurant and Hospitality association and is a Past Chairman of the Board. In 2015, Jack changed careers and became a Licensed Real Estate Agent and is now with the Keller Williams Town Life office located in Tenafly, NJ. Living in Bergen County for the last 30 years has given Jack a unique perspective, first as resident of a Fort Lee High Rise and later as a homeowner in the Northern Valley, he has a firm grasp on the Local Real Estate Market. His professionalism and service mentality give him a unique skill set necessary to care for the most discerning clients. His many years of operating multiple successful businesses give him the acumen to oversee your transaction from start to finish. He brings value to the equation, that other realtors may not, and offers more than just the normal function of a Real Estate Agent but will act as your fiduciary seeing that your trust is rewarded and all of your needs are met. Contact Me Visit my Website Send a Referral Subscribe to Newsletter