Inherited Stock: Cost Basis and Holding Period

The direct answer

Inherited stock generally does not keep the decedent's original purchase price.

Property acquired from a decedent generally receives a basis determined under IRC §1014, often using its fair market value at the date of death. Depending on the estate and the property, however, alternate valuation, specialized valuation rules, the consistent-basis requirements, or other exceptions can change the answer.

Inherited capital-asset property that receives basis under §1014 is also generally treated as long-term when the beneficiary later sells it—even if the beneficiary personally held the shares for only a short period.

“Inherited basis” does not always mean a step-up

People often describe §1014 as the “step-up in basis” rule.

That shorthand can hide an important point: the basis adjustment can move up or down.

Suppose a decedent bought stock for $20,000 and it is worth $80,000 at death. Ordinary §1014 treatment may increase basis substantially.

But if stock purchased for $80,000 is worth $50,000 at death, the same general regime can produce a lower basis.

The useful concept is therefore not “automatic step-up.” It is a basis determined under the inherited-property rules, commonly by reference to estate-tax valuation.

And not every property interest associated with a decedent necessarily qualifies for §1014 treatment. The legal nature of the property and how it passes matter.

Date-of-death value is the starting point, not a universal answer

For ordinary inherited stock, fair market value at the date of death is often the central valuation figure.

But it is not the only possible one.

IRC §2032 permits an estate, when the statutory requirements are satisfied, to elect alternate valuation. Other specialized estate-valuation provisions can also affect basis.

That distinction matters because the beneficiary generally does not independently choose the estate's valuation method after receiving the property. Alternate valuation is an estate-level election.

So when inherited shares arrive in a brokerage account, the beneficiary should not simply look up the stock's date-of-death market price and assume the analysis is complete.

Estate records may control or materially affect the basis determination.

Inherited stock generally receives long-term treatment

Inherited stock also differs from ordinary purchased stock in its holding-period treatment.

Under IRC §1223(9), capital-asset property acquired from a decedent with basis determined under §1014 is generally treated as having been held for more than one year.

That means a beneficiary can inherit stock, sell it only a few months later, and still generally have a long-term capital gain or loss.

This is a special rule. It should not be confused with the normal more-than-one-year holding-period test explained in Short-Term vs. Long-Term Capital Gains.

Example: inherited shares sold three months later

Assume a decedent originally purchased 100 shares for $2,000.

At the decedent's death, the shares have a fair market value of $8,000.

The beneficiary sells the shares three months later for $9,000.

Assuming ordinary §1014 treatment:

Inherited basis: $8,000
Sale proceeds: $9,000
Gain: $1,000

The beneficiary does not generally calculate the gain using the decedent's old $2,000 purchase price.

And despite selling only three months after inheriting the stock, the $1,000 gain is generally long-term.

Inherited basis, consistent basis, and beneficiary reporting are different rules

Three related rules can matter when inherited property is involved, but they do not have identical scope.

General inherited basis — IRC §1014

IRC §1014 and related provisions generally determine the basis of property acquired from a decedent. For ordinary inherited stock, that often means fair market value at the date of death or another applicable estate-tax valuation.

That adjustment can increase or decrease basis.

Separate exceptions also matter. For example, IRC §1014(e) can deny the ordinary inherited-basis result for certain appreciated property that was given to the decedent within one year of death and then passes back to the original donor or the donor's spouse.

Consistent basis — IRC §1014(f)

For property subject to the consistent-basis rule, a beneficiary generally cannot claim basis exceeding the property's final value for federal estate-tax purposes.

But §1014(f) does not apply to every inherited asset.

The final regulations limit the rule to property satisfying the applicable statutory and regulatory conditions, including the estate-tax-liability condition. Property whose inclusion does not increase federal estate-tax liability after allowable credits can therefore fall outside the §1014(f) consistency limitation.

Beneficiary information reporting — IRC §6035

Section 6035 is a separate information-reporting regime and can reach more broadly than §1014(f).

When an executor is required under IRC §6018 to file an estate tax return, §6035 and Treas. Reg. §1.6035-1 can require beneficiary basis-information reporting for covered property even when that property is not subject to the narrower §1014(f) consistency limitation.

That means “subject to Form 8971 reporting” and “subject to the §1014(f) basis cap” are not interchangeable conclusions.

A voluntary Form 706 does not automatically trigger §6035

The filing trigger matters.

If an estate was not required under IRC §6018 to file Form 706, filing a return voluntarily only for portability, GST allocation or election, protective purposes, or a similar reason does not by itself trigger §6035 reporting.

So the fact that a Form 706 was filed does not, standing alone, establish that Form 8971 and Schedule A were required.

Form 8971 and Schedule A

Where §6035 applies, Form 8971 and the applicable Schedule A provide beneficiary basis-information reporting.

Form 8971 is not required for every inheritance.

April 27, 2026: IRS administrative update to Form 8971 beneficiary-information instructions. It does not amend the substantive consistent-basis rules of §1014(f) or T.D. 9991.

Property omitted from an estate return

Property omitted from an estate return does not automatically receive zero basis.

T.D. 9991 did not retain the proposed automatic zero-basis rule. Existing basis substantiation, estate-inclusion, and enforcement rules continue to govern.

The brokerage account may not prove inherited basis

When inherited shares move into a beneficiary's account, the brokerage may display transferred basis information.

That information can be useful.

It is not necessarily the final legal answer.

For an inherited position, the more important records can include:

• the date-of-death brokerage statement;
• estate or probate statements;
• Form 706 valuation, where applicable;
• an appraisal;
• Schedule A of Form 8971, where applicable;
• executor correspondence; and
• documentation showing exactly what property the beneficiary received.

Where the consistent-basis rules apply, Schedule A can be particularly important.

The right comparison is between the brokerage record and the estate documentation—not an assumption that whichever number appears in the investment account must control.

What can change the answer?

Inherited basis becomes more fact-sensitive when the history involves alternate valuation, special-use valuation, community property, income in respect of a decedent, an estate purchase made after death, or property that had previously been transferred to the decedent.

One especially important statutory exception appears in IRC §1014(e), involving certain appreciated property transferred to a decedent within one year of death and then passing back to the original donor or the donor's spouse.

The broader point is more useful than memorizing every exception:

“I received this after someone died” is not, by itself, enough to establish the tax basis.

You need to know what property was received, how it passed, what valuation regime applied, and whether a specialized basis limitation or exception changes the ordinary result.

What happens when the inherited stock is eventually sold?

Once the correct inherited basis and holding-period treatment have been established, the later sale follows the normal capital-gain framework.

For ordinary investment stock:

Sale proceeds
− adjusted inherited basis
= gain or loss

The resulting long-term gain or loss then enters the normal Schedule D netting process.

If the basis shown by the broker is missing or inconsistent with the estate documentation, What If My Cost Basis Is Missing or Wrong? addresses reconstruction.

If the eventual return needs to reconcile an established basis with broker reporting, Form 1099-B and Form 8949 handles that reporting question.