Stepped-Up Basis on Inherited Real Estate

When you inherit real estate, the law hands you a remarkable gift: your cost basis resets to the property’s fair market value on the day the owner died, not what they originally paid. If the property appreciated over decades, you can often sell it immediately with no capital-gains-tax-investor whatsoever—a benefit unique to inherited property.

The Step-Up at Death

The stepped-up basis is a feature of the U.S. tax code that resets the cost basis of inherited property to its fair market value (FMV) on the date of the owner’s death. This is not unique to real estate, but real estate is where the benefit is most visible and valuable.

When someone owns property for many years and it appreciates, the owner usually does not sell because the realized capital-gains-tax-investor would be massive. When the owner dies, the unrealized gain—the difference between the original purchase price and the current value—would normally pass to the heirs, who would then owe tax if they sold. The step-up law prevents this: it erases the deceased’s gain and gives heirs a fresh, higher cost basis.

Example: Your grandfather bought a rental property in 1980 for $100,000. At his death in 2025, it is worth $800,000. His unrealized gain was $700,000. Under the step-up rule, your cost basis becomes $800,000 (the FMV at death). If you sell the property six months later for $810,000, your taxable capital gain is only $10,000—not $710,000. The $700,000 appreciation during his lifetime is never taxed.

This is a powerful benefit that applies to all inherited property, not just real estate, but real estate is the most common context because properties often appreciate significantly over time.

Computing Your Tax Basis After Inheritance

The new basis is the fair market value of the property on the date of death. “Fair market value” means the price at which the property would sell between a willing buyer and a willing seller, neither under pressure.

The executor of the estate must determine FMV. For real estate, this is typically done by:

• Professional appraisal (most common and defensible)
• Real estate broker opinion of value
• Tax assessor’s value (less reliable, as it is often understated)
• In contentious cases, multiple appraisals and averaging

The IRS may challenge the FMV on audit. If it was undervalued, both the estate and the heir can face additional tax. Proper documentation with an appraisal dated at or shortly after death is essential.

When You Sell After Inheriting

If you inherit property and later sell it, your taxable capital-gains-tax-investor gain is:

Realized gain = Sale price − Stepped-up basis

If you sell immediately or shortly after inheriting, the gain is often tiny or zero because you paid (stepped-up basis) nearly what the property was worth at death. The longer you hold before selling, the more new appreciation you may accumulate, and that new appreciation is yours to tax.

Example: You inherit the rental property above (stepped-up basis $800,000) on January 1, 2025. You hold it for one year. On January 1, 2026, it is worth $840,000. Your gain is $40,000, not $740,000. If you hold it for three years and it appreciates to $900,000, your gain is $100,000. Only new appreciation after death is taxable to you.

The inherited property also receives automatic long-term holding period status. Regardless of how quickly you sell, any gain you recognize qualifies for capital-gains-tax-investor treatment (0%, 15%, or 20% rate), not short-term rates (ordinary income).

The Alternative Valuation Date

Executors have the option to value the entire estate using an alternative valuation date of six months after death, rather than the date of death. This is seldom used for real estate because property typically appreciates, so using a later valuation would increase the basis (good for the heir) but also increase the estate’s taxable value (bad if the estate owes federal estate tax).

If the executor elects the alternative valuation date, your stepped-up basis is the FMV six months after death. This can be advantageous if the property declined in value between death and the six-month mark.

Example: The deceased owned commercial real estate worth $5 million on the date of death. Six months later, it was worth $4.5 million (due to market downturn or tenant departure). The executor can elect to use the six-month valuation, giving heirs a stepped-up basis of $4.5 million instead of $5 million. This lowers the heir’s basis but also lowers the estate’s taxable value, potentially reducing federal estate tax.

Community Property and the Full Step-Up

In community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin), married couples often hold property as community property. Community property receives special stepped-up basis treatment.

When one spouse dies, the law treats the community property as if both spouses’ shares receive a step-up to FMV at death. This is called the “community property full step-up” or “double step-up.”

Example: Husband and wife own a house in California (community property state) purchased for $200,000. At the husband’s death, the house is worth $600,000. Under community property law, both the wife’s 50% share and the deceased husband’s 50% share receive a step-up. The wife’s basis becomes $600,000 for the entire house (or $300,000 for her 50% share, valued at half of $600,000). If she sells for $620,000, her gain is only $20,000.

In contrast, in non-community property states, typically only the deceased spouse’s share receives the step-up. The surviving spouse’s share retains the original basis. This is a significant tax advantage unique to community property jurisdictions and is one reason property is often held as community property in those states.

Basis Adjustments After Step-Up

Once you inherit property and receive the stepped-up basis, that basis is your starting point for depreciation, cost-of-sale calculations, and any future exchanges.

If you convert inherited property to a rental, you may claim depreciation using the stepped-up building basis (not the land). The depreciation is calculated over 27.5 years for residential, 39 years for commercial.

Example: You inherit a house with stepped-up basis of $600,000. The property is 80% building, 20% land. Your depreciable building basis is $600,000 × 0.80 = $480,000. You may depreciate $480,000 ÷ 27.5 = $17,454 per year.

If you later like-kind-exchange-timeline-rules the property into another rental, your stepped-up basis carries forward into the replacement property and becomes the adjusted basis for your new depreciation calculations.

Capital improvements you make after inheriting are added to the stepped-up basis, just as with any other property.

Inherited Property and Investment Income Tax

Inherited rental property is subject to net-investment-income-tax-real-estate (3.8% NIIT) on rental income and gains if your modified adjusted gross income exceeds the threshold. The step-up does not exempt you from NIIT; it only reduces the gain subject to tax.

If you are a real estate professional, rental income is exempt from NIIT regardless of inheritance status.

The Policy Debate

The stepped-up basis is controversial. Critics argue it is a multi-hundred-billion-dollar annual tax break for wealthy heirs whose parents leave large estates. Supporters counter that the step-up prevents double taxation (estate tax plus capital gains tax) and is administratively simple.

From time to time, Congress proposes repealing or limiting the step-up, especially for high-value estates. As of 2025, the step-up remains intact, but its future is uncertain. If you inherit property, do not assume the step-up will last forever—use it while it exists.

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