Step-Up in Basis on Inherited Assets: What Resets, What Doesn't, and What's at Stake
Cost basis is the number that determines how much of a sale is taxable gain versus a return of capital. It sounds technical, but the practical stakes are significant: beneficiaries who understand how step-up in basis on inherited assets often owe far less in taxes than those who don't. Beneficiaries who misread which assets qualify for it can make the opposite mistake, assuming a reset happened on property that never received one.
The rules under IRC §1014 apply across asset classes, interact with state law, and create documentation obligations that fall directly on the beneficiary and executor. This article explains how the basis reset at death works, how it applies differently across stocks, real estate, business interests, bonds, and collectibles, and where the most consequential planning decisions tend to cluster.
Post Oak Private Wealth Advisors works with families and individuals who need to think through inherited property as part of a coordinated financial plan, not as a series of isolated transactions.
What Cost Basis Actually Means, and Why It Changes at Death
Step-up in basis on inherited assets is the value used to determine gain or loss when an asset is sold. A person who bought stock for $50,000 and sells it for $500,000 owes capital gains tax on $450,000. Basis is not attached to a ticker symbol or a property address. It belongs to a specific owner, carries forward when an asset is given away during life, and resets when an asset transfers at death.
That reset is what the step-up in basis on inherited assets refers to. Under IRC §1014(a), a beneficiary who inherits property generally takes a basis equal to the asset's fair market value on the date of the original owner's death. All appreciation that built up during that person's lifetime is wiped clean for income tax purposes. Neither the estate nor the beneficiary owes income tax on gains that accrued before the date of death.
This provision applies whether or not the estate owes federal estate tax. With the federal estate and gift tax exemption sitting at $15 million per individual for 2026 under the One Big Beautiful Bill Act, most families will never file a federal estate tax return. The basis reset under §1014 is a separate income tax provision, and it operates regardless of estate tax exposure. Learn how we work with clients.
Step-Up in Basis on Inherited Assets, by Asset Type
Stocks, Mutual Funds, and ETFs
Each holding in an inherited brokerage account gets its basis reset to fair market value on the date of death, calculated per share or per unit. For mutual funds using average-cost accounting, the method restarts the average at the new stepped-up figure. Brokerage firms will typically issue an updated cost basis statements after receiving a death certificate and date-of-death valuation data. Requesting this promptly matters: a later partial sale reported against stale pre-death cost data creates both reporting problems and unnecessary disputes.
Assets can generally be transferred in-kind from the decedent's account to the beneficiary's account, preserving the reset basis without requiring liquidation and repurchase.
Real Estate and Rental Property
Real estate receives the same basis reset to fair market value at death. For rental property that was depreciated over years of ownership, this benefit goes beyond the capital gains question. The decedent's accumulated depreciation does not transfer to the beneficiary, and depreciation recapture tied to the prior owner's holding period does not apply. The beneficiary starts a fresh depreciation schedule from the new basis, allocated separately between land and improvements since land is not depreciable.
Family Businesses and Partnership Interests
A beneficiary's step-up in basis on inherited assets in a business interest, whether shares in a closely held corporation, an LLC membership interest, or a partnership stake, also resets to fair market value at death. That requires a formal business valuation, which is one of the most consequential and most frequently skipped steps in settling an estate that includes business assets. A defensible valuation is difficult to reconstruct after the fact.
Collectibles and Tangible Personal Property
Art, jewelry, coin collections, stamp collections, and similar assets also receive a step-up in basis on inherited assets. The challenge with these assets is that fair market value is harder to establish without a qualified appraisal taken near the date of death. These items are frequently sold years later, often without records of what they were worth at the time of inheritance. A professional appraisal obtained promptly, even for a collection of modest value, is inexpensive relative to the basis dispute it can prevent.
Bonds, CDs, and Fixed-Income Securities
Bond principal receives the same basis treatment as other capital assets. Accrued interest is handled differently. Interest that built up on a bond or CD through the date of death but had not yet been paid is classified as income in respect of a decedent under IRC §691. It is taxable to whoever receives it and does not receive a basis adjustment, because it was never a capital gain to begin with.
Series EE and Series I U.S. savings bonds deserve special attention. These bonds compound on deferred, untaxed interest for years, and all of that accumulated interest becomes income in respect of a decedent at death. When the bond is eventually cashed or matures, the beneficiary owes ordinary income tax on the full amount. There is no step-up in basis on inherited assets on accumulated bond interest, even though the instrument superficially resembles an ordinary investment.
Assets That Do Not Qualify for the Reset
The step-up in basis on inherited assets does not apply to everything a person owns. Assets classified as income in respect of a decedent under IRC §691 carry no basis adjustment at death:
Traditional IRAs, 401(k)s, and other pre-tax retirement accounts
Annuities, specifically the gain or growth portion
Unpaid salary, commissions, or bonuses owed at the time of death
Installment sale notes receivable
Deferred compensation
Every dollar distributed from these accounts is taxed as ordinary income to the beneficiary, at their marginal rate, exactly as it would have been taxed to the original owner. There was no capital gain built into these assets during the owner's lifetime, so there is nothing to reset.
The Texas Advantage: Community Property and the Double Basis Reset
In the nine community property states, Texas among them, a special provision under IRC §1014(b)(6) applies at the first spouse's death: both halves of community property receive a full basis reset to fair market value, not just the deceased spouse's share.
For Texas couples with meaningful appreciated property held as community property, the difference can be substantial. A surviving spouse who receives the entire community estate gets a fully reset basis on assets that, in another state, would carry over basis on half the position.
This benefit depends on the property actually being community property in character. Property that has been separately acquired, improperly commingled, or retitled in a way that changes its character may not qualify. Confirming how property is titled before assuming the double step-up in basis on inherited assets applies is an important early step in post-death planning.
Capital Gains After the Basis Resets
For any appreciation that occurs after the date of death, capital gains tax applies on the same terms as any other investment. Inherited assets are automatically treated as long-term for capital gains purposes, regardless of how briefly the beneficiary has actually held them.
For 2026, long-term capital gains rates are as follows:
0% for taxable income up to $49,450 for single filers or $98,900 for married filing jointly
15% for income above those amounts, up to $545,500 for single filers or $613,700 for married filing jointly
20% for income above those thresholds
Beneficiaries whose modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married filing jointly may also owe the 3.8% Net Investment Income Tax surtax under IRC §1411, which can push the effective top rate on long-term gains to 23.8%.
Documenting the Reset: Why Most Families Underestimate This Step
When an estate is large enough to require a federal estate tax return, the executor must file Form 8971, reporting each beneficiary's step-up in basis on inherited assets received. Beneficiaries are then required to use a basis consistent with that reported value, under the consistent basis rule of IRC §1014(f).
For the vast majority of estates that fall under the $15 million federal exemption and never file a Form 706, no government filing automatically establishes the date-of-death value. The entire burden of documenting fair market value at death falls on the beneficiary and executor directly.
What that means in practice:
For publicly traded securities, a brokerage statement near the date of death typically establishes the value
For real estate, a qualified appraisal is the most defensible documentation
For business interests, a formal valuation obtained near the date of death is the standard
For collectibles and tangible personal property, a certified appraisal is the appropriate evidence
If you recently inherited property or are in the process of settling an estate where documentation is still incomplete, Post Oak Private Wealth Advisors can help evaluate inherited assets alongside a coordinated financial and tax plan. See the families and individuals we work with.
Understanding the Reset Is the Starting Point, Not the Finish Line
The step-up in basis on inherited assets is among the most valuable provisions available to beneficiaries and among the most easily forfeited through delay, faulty assumptions, or missing documentation. The rules themselves are not especially complicated, but they vary by asset type, interact with state law and titling, and depend on timely action in the months after an inheritance.
Getting this right before selling anything, not after, is where the difference between a well-managed inheritance and an unnecessarily expensive one tends to be made.
If you are coordinating an estate where step-up in basis on inherited assets questions are still open, or integrating inherited property into a broader financial picture, Post Oak Private Wealth Advisors can help work through the decisions before they become irreversible. Talk to our team.
FAQ
What is step-up in basis on inherited assets?
Under IRC §1014(a), a beneficiary who inherits property takes a basis equal to the asset's fair market value on the date of the original owner's death. All appreciation that accumulated during the decedent's lifetime is erased for income tax purposes. Neither the estate nor the beneficiary owes income tax on that prior gain.
Do inherited retirement accounts receive a step-up in basis?
No. Traditional IRAs, 401(k)s, and other pre-tax accounts are classified as income in respect of a decedent under IRC §691. They carry no basis adjustment. Every dollar distributed from these accounts is taxed as ordinary income to the beneficiary, at their marginal rate, exactly as it would have been taxed to the original owner.
How does capital gains tax work after the basis resets on inherited assets?
Capital gains tax only applies to appreciation that occurs after the date of death. Inherited assets are automatically treated as long-term for tax purposes, regardless of how briefly the beneficiary has held them. For 2026, long-term rates are 0%, 15%, or 20% depending on total taxable income. Beneficiaries above the NIIT threshold may also owe a 3.8% surtax under IRC §1411.
What documentation establishes the stepped-up basis?
For publicly traded securities, a brokerage statement near the date of death typically suffices. For real estate, a qualified appraisal is the standard. For business interests and collectibles, a formal valuation or certified appraisal obtained near the date of death is the primary evidence. For estates that never file a Form 706, no government filing creates this record automatically.
Is there a step-up in basis if property was gifted shortly before death?
IRC §1014(e) denies the reset for appreciated property received as a gift within one year of the decedent's death, if that property then passes back to the original donor or their spouse. In that situation, the giver's original carryover basis applies instead.
What is the Texas community property double step-up?
Under IRC §1014(b)(6), both halves of community property receive a full basis reset at the first spouse's death in community property states, including Texas. In common-law states, only the deceased spouse's share steps up. This can be a material advantage for Texas couples with significant appreciated community property, though it depends on the property being properly characterized as community property.