Tax Advantages of the Estate Step-Up in Basis for Commercial Multifamily Investors

Introduction – Why the Estate Step-Up in Basis is So Impactful for Multifamily Investors

When it comes to building and passing down wealth through commercial real estate, few tax provisions are as powerful as the estate step-up in basis. This tax provision, found in Section 1014 of the U.S. tax code, gives a unique advantage to property owners and their heirs. The step-up in basis applies specifically to assets held by the decedent at death, meaning only those assets owned at the time of passing receive this favorable treatment.

Here’s how it works: when a property owner passes away, the tax basis of that property automatically resets to its fair market value on the date of death. In simpler terms, any appreciation in value and any depreciation that was claimed during the owner’s lifetime is completely wiped away for tax purposes ^[1][10]. This means heirs can sell the property soon after inheriting it with little to no capital gains tax, or they can hold onto it and restart depreciation on the higher, stepped-up value, with both options creating significant tax savings. Some critics argue that this step-up in basis acts as a tax loophole, as it allows inherited wealth to avoid capital gains taxes, disproportionately benefiting high-income households.

Over the years, savvy investors have paired this step-up in basis with other strategies like 1031 exchanges (to defer taxes during their lifetime) and accelerated depreciation (to boost cash flow). Now, with the 2025 One Big Beautiful Bill Act (OBBBA) raising the federal estate-tax exemption to historic levels, the ability to pass wealth tax-efficiently to future generations has become even more compelling ^[5][6].

This article walks you through the key components of the step-up in basis:

• How it works and the rules around valuation
• Why it eliminates depreciation recapture
• How community-property laws can double the benefit for married couples
• The impact of OBBBA on estate planning
• How cost-segregation studies can create an additional tax advantage in the final year of life

By understanding and applying these strategies, commercial multifamily investors and family offices can maximize today’s after-tax returns while setting up a tax-smart legacy for generations to come.

Eligible Assets for Step-Up in Basis

What Qualifies

The step-up in basis provision is a powerful tax tool that applies to a broad array of inherited assets, not just real estate. Assets that typically qualify include commercial and residential real estate, stocks, bonds, mutual funds, and other investment property. For an asset to be eligible, it must be owned by the decedent at the time of death and included in the decedent’s estate for estate tax purposes. The Internal Revenue Service (IRS) requires that the fair market value of each inherited asset be determined as of the date of death, or the alternate valuation date if elected. This fair market value becomes the new cost basis for the heir, replacing the original owner’s cost basis.

This reset to a stepped-up basis can dramatically reduce the capital gains tax liability when the inherited property is eventually sold. The taxable gain is calculated as the difference between the sale price and the stepped-up basis, not the original purchase price. For example, if a multifamily property was originally purchased for $3,000,000 and is valued at $5,000,000 at the owner’s death, the heir’s new cost basis is $5,000,000. If the property is later sold for $5,500,000, only the $500,000 increase is subject to capital gains taxes, rather than the $2,500,000 gain that would have been realized without the step-up in basis.

Understanding which assets qualify for a step-up in basis is essential for effective tax planning. By ensuring that eligible assets are included in the decedent’s estate and properly valued at fair market value, investors can minimize taxes owed and maximize the after-tax value of inherited property. This step-up in basis provision is a cornerstone of many estate plans, helping families reduce tax liability and preserve wealth across generations.

How the Step-Up Works: IRC § 1014 Mechanics and Fair Market Valuation Rules

What It Is

Under Internal Revenue Code §1014, any property inherited from a deceased owner receives a new “tax basis” equal to its fair market value (FMV) on the date of death. Alternatively, if it helps reduce estate taxes, the estate’s executor can choose an alternate valuation date which is six months after death. This reset applies whether the property’s value has gone up or down since it was originally purchased ^[2].

Why It Matters

​​This step-up is one of the most significant tax advantages in real estate inheritance. For heirs, it creates two powerful benefits:

• Immediate Tax Relief: If the heirs sell the property soon after inheriting it, they pay capital gains tax only on any increase in value that occurs after the original owner’s death. The prior appreciation that happened during the deceased’s lifetime is completely erased for tax purposes.
• Fresh Depreciation Deductions: If heirs decide to hold onto the property, they can start a new 27.5-year depreciation schedule based on the higher, stepped-up basis, which can dramatically improve after-tax cash flow.

Key Data Points

• The basis can step up or down to match the property’s fair market value at death.
• The alternate valuation date can only be used when it lowers estate tax liability ^[2].
• The step-up eliminates both capital gains and depreciation recapture exposure, meaning no taxes on the property’s past appreciation or deductions ^[3].
• Heirs can run a cost segregation study on the newly stepped-up basis to accelerate depreciation and boost early-year tax deductions ^[9].

Real-World Insight

Imagine an investor bought a 200-unit apartment complex for $4 million years ago. At the time of death, the property is appraised at $11 million. Six months later, the heirs sell it for $11.2 million. Because of the step-up in basis, they only owe taxes on the $200,000 increase in value that happened after the owner’s death, not on the $7 million of appreciation or prior depreciation deductions.

Depreciation Recapture Elimination

What It Is

When you own commercial property, you can claim depreciation deductions each year to lower your taxable income. Over time, these deductions add up. Normally, when you sell the property, the IRS requires you to “pay back” some of those tax savings through depreciation recapture taxes.

• For standard real estate depreciation (known as Section 1250 gain), the recapture tax rate is up to 25%.
• For accelerated depreciation (known as Section 1245 property, like certain tangible personal property), recapture can be taxed at ordinary income rates, reaching as high as 37%.

However, when a property is inherited instead of sold during the owner’s lifetime, there is no taxable sale, which means the recapture taxes vanish completely ^[3].

Why It Matters

Knowing that depreciation recapture disappears upon inheritance changes how investors plan during their lifetime:

• Owners can take full advantage of cost segregation studies and bonus depreciation to maximize tax deductions while alive.
• There’s no need to worry about triggering a big recapture tax bill later, because the step-up in basis wipes it out.

This creates a win-win scenario: higher tax savings during ownership and zero recapture liability for heirs.

Key Data Points

• Section 1250 recapture (25% rate) = eliminated upon inheritance.
• Section 1245 recapture (ordinary income up to 37%) = also eliminated.
• Combining 1031 exchanges with a final step-up (“swap ’til you drop”) lets investors defer taxes repeatedly and then erase both deferred gains and recapture taxes at death ^[3].
• After inheriting, heirs also receive a fresh depreciation schedule, adding another layer of tax benefits ^[9].

Real-World Insight

A real estate partnership used a cost segregation study to claim $2 million in bonus depreciation deductions. If they sold the property during their lifetime, they would face a federal recapture tax of about $500,000. Instead, they held onto the property until the last surviving partner passed away. Thanks to the step-up in basis, their heirs inherited the property without owing a single dollar in recapture tax—an example of how strategic planning can create major tax savings.

Community Property Double Step-Up Advantage – Maximizing the Benefit for Married Couples

What It Is

For married couples, property ownership structure can make a huge difference in estate planning. Under IRC §1014(b)(6), when a spouse in a community-property state passes away, both halves of the jointly owned property receive a full step-up in basis.

This is different from common-law states, where only the deceased spouse’s 50% share of the property gets a step-up. The surviving spouse’s share keeps its original, lower tax basis.

There are nine states that automatically treat marital assets as community property:
Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin.

Additionally, five other states—Alaska, Florida, Kentucky, South Dakota, and Tennessee—allow married couples to create community-property trusts, even if they live in a common-law state ^[4][7].

Why It Matters

This double step-up can completely eliminate built-in capital gains on a property when one spouse dies. The surviving spouse then has two major advantages:

• They could sell the property immediately with no capital gains tax on the lifetime appreciation.
• They start with a new, higher depreciation basis, creating opportunities for greater future tax deductions if they keep the property.

This strategy can save millions in taxes and allow for tax-free refinancing or further investment growth.

Key Data Points

• Community-property states automatically provide this 100% step-up.
• In common-law states, without special planning, only a 50% step-up is received.
• Couples can opt into community-property treatment using a community-property trust, even if their state doesn’t provide it by default.
• IRS Regulation §1.1014-6 outlines how community-property basis adjustments apply ^[7].

Real-World Insight

A married couple in Nevada bought a multifamily property for $5 million years ago. By the time one spouse passed away, the property’s market value had risen to $10 million. Because Nevada is a community-property state, the entire property received a step-up to $10 million.

The surviving spouse avoided capital gains tax on the $5 million appreciation and could immediately refinance the property, pulling out millions tax-free, or start fresh depreciation deductions on the new, higher basis.

Enhanced Estate Planning Through OBBBA

What It Is

Effective for estates of decedents dying and gifts made after December 31, 2025, the One Big Beautiful Bill Act (OBBBA) significantly changes the federal estate tax landscape. The law increases the estate-tax exemption to $15 million per person (or $30 million for married couples), with automatic adjustments for inflation. This limit was previously set to decrease to $7 million per person at the end of 2025. Importantly, the legislation preserves the step-up in basis rule, meaning heirs can still benefit from resetting the inherited property’s tax basis to its fair market value ^[5].

This increase is a permanent change, with no built-in expiration or sunset provision, giving families more certainty when planning their estates.

Why It Matters

With the higher exemption, far fewer estates will be subject to federal estate tax. This shift allows high-net-worth families to rethink their estate planning strategies:

• They no longer need to rush to gift away assets during their lifetime just to avoid estate taxes ^[6].
• Instead, it often makes more sense to hold appreciated properties until death, ensuring a full step-up in basis and avoiding capital gains taxes altogether.
• Couples can also take advantage of portability, meaning any unused exemption from one spouse can transfer to the surviving spouse, maximizing the combined $30 million threshold.

The end result is a stronger focus on income-tax efficiency and multigenerational wealth preservation.

Key Data Points

• Top federal estate-tax rate remains 40%, but now applies only to estates above the new $15M/$30M thresholds.
• The step-up in basis remains fully intact, avoiding a switch to a less favorable “carryover basis” system ^[5][6].
• Larger exemptions reduce the need for complex gifting structures, simplifying wealth-transfer strategies.
• Families can now focus more on tax-efficient asset management rather than defensive estate-tax maneuvers.

Real-World Insight

A married couple owns a commercial multifamily portfolio worth $24 million. Before OBBBA, they might have considered gifting parts of the portfolio to heirs early to avoid estate tax exposure.

Now, with a combined $30 million exemption, they face zero federal estate tax. They plan to hold their core assets until death, which will save their heirs approximately $6 million in capital gains and recapture taxes that would have been triggered if they sold during their lifetime.

Cost Segregation Strategy for Final Returns

What It Is

A lesser-known but powerful tax strategy involves conducting a cost segregation study shortly after a property owner’s death. A cost segregation study breaks down a property into its individual components, such as electrical systems, plumbing, and landscaping, allowing portions of the property to be depreciated more quickly than the standard 27.5 years.

When done post-mortem, this strategy creates a catch-up deduction (under IRC §481(a)) that can be claimed on the deceased owner’s final income tax return (Form 1040). Normally, aggressive depreciation would trigger depreciation recapture taxes when the property is sold. But here’s the benefit: because the property’s tax basis resets to its fair market value at death, there is no future recapture. This means you can take a big deduction without worrying about paying it back later ^[8].

Why It Matters

This “last-mile” planning move can deliver significant tax savings in the final year of life by:

• Offsetting income from rental operations, business sales, or other taxable events in that year.
• Providing additional cash flow for the estate or surviving family members.
• Allowing heirs to inherit the property with a clean, stepped-up basis, ready for fresh depreciation deductions.

It’s an effective way to double-dip on depreciation: once for the deceased’s final return and again for the heirs.

Key Data Points

• The strategy requires filing Form 3115 to make the necessary accounting change.
• Timing is critical—the cost segregation study and election must be completed before the final return’s extended due date.
• After inheriting the property, heirs can conduct another cost segregation study on the new stepped-up basis, creating even more deductions.
• Proper coordination between the executor, CPA, and cost segregation specialist is essential to maximize benefits.

Real-World Insight

An estate conducted a cost segregation study, producing a $600,000 deduction on the deceased owner’s final tax return, saving $222,000 in federal taxes. Later, the heirs inherited the property at its fair market value and commissioned another cost segregation study, unlocking $1.2 million in bonus depreciation during their first year of ownership.

This resulted in two rounds of substantial tax deductions with no depreciation recapture taxes owed, demonstrating how end-of-life planning can amplify tax savings.

Conclusion – The Step-Up in Basis: A Cornerstone of Wealth Transfer for Real Estate Investors

The estate step-up in basis is one of the most powerful tools available for building and transferring wealth through commercial multifamily real estate. It takes what would normally be large tax liabilities from capital gains and depreciation recapture and erases them at death, allowing heirs to receive assets with a clean tax slate.

When combined with smart strategies like:

• 1031 exchanges to defer taxes during life
• Accelerated depreciation to boost current cash flow
• Community-property planning to unlock double step-ups
• And the favorable estate-tax thresholds under OBBBA

…this provision allows families to enjoy the best of both worlds: maximum after-tax income today and a tax-efficient legacy tomorrow.

Even in complex estates, careful planning around property titling, valuation, and coordination between advisors can ensure these benefits are fully realized. And for those who want to take things a step further, final-year cost segregation studies can squeeze out one last round of tax savings with no downside for heirs.

For commercial real estate investors and family offices aiming to pass down portfolios without passing down tax burdens, the step-up in basis isn’t just a technical rule, it’s the foundation of generational wealth strategy.