Inherited Stock Resets Its Tax Bill to Zero and Here’s the IRS Rule That Does It

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If you’ve ever inherited a stock portfolio, a rental property, or even a single share of grandma’s old utility company, the IRS hands you a quiet gift most heirs never notice. It’s called the step-up in basis, and it can wipe out decades of capital gains tax in a single moment. The rule resets the cost basis of inherited assets to their fair market value on the date of the original owner’s death, meaning the embedded gains that built up over a lifetime can vanish for tax purposes the second the asset passes to you.

The Reveal: Decades of Gains, Erased

Here’s how it works. Say your father bought Coca-Cola (NYSE:KO) stock in 1975 for $2,000. By the time he passes in 2026, it’s worth $200,000. If he had sold it the day before he died, he’d owe long-term capital gains tax on roughly $198,000. But because you inherited it, your new cost basis is the value on the date of his death. Sell it the next morning for $200,000 and your taxable gain is zero. The IRS treats the appreciation that occurred during his lifetime as if it never happened, at least for income tax purposes.

The Proof: IRC Section 1014

This isn’t a loophole or a workaround. It’s written into 26 U.S. Code §1014, which states that the basis of property acquired from a decedent is generally the fair market value of the property at the date of the decedent’s death. Suze Orman puts it bluntly when explaining the mechanics: “Because when they inherit it from you, they get a step up in cost basis. If it goes from 100,000 to 500,000, they inherit it. Their cost basis now is 500,000.” The rule has survived every recent attempt to repeal it, and as of 2026 it remains fully intact.

Who Qualifies, Who Doesn’t

The step-up applies to almost any capital asset passed at death: individual stocks, ETFs, mutual funds in taxable brokerage accounts, real estate, collectibles, and ownership stakes in private businesses. It applies whether you inherit through a will, a trust, or a transfer-on-death designation. It does not apply to assets inside tax-deferred retirement accounts like traditional IRAs, 401(k)s, or annuities, because those carry ordinary-income tax treatment on the way out. Gifts given while the original owner is still alive don’t qualify either. The donor’s basis carries over, and the gain comes with it.

Community property states (including California, Texas, Arizona, Washington, and a handful of others) get an even sweeter version: when one spouse dies, both halves of jointly held community property step up. In common-law states, only the deceased spouse’s half gets the reset, as Orman notes: “You each have $150,000 cost basis on that property. One of you dies, the other inherits your half, the new half. You get a step up in basis on their half.”

How to Actually Use It

1. Get the date-of-death fair market value in writing. For publicly traded securities, the basis is typically the average of the high and low trading price on the date of death. Ask the brokerage for a stepped-up cost basis statement.
2. For real estate or private business interests, hire a qualified appraiser. An IRS-defensible appraisal is your paper trail.
3. Update the cost basis with the custodian before you sell. Brokerages don’t always do this automatically, and a missed step-up means you’ll overpay tax.
4. If you plan to hold, consider whether to sell appreciated positions soon after inheriting. With the 10-year Treasury yielding 4.43%, reallocating inherited stock into bonds or cash can be done without triggering a tax bill on the embedded gain.
5. Long-term capital gains rates still apply if the asset continues appreciating after you inherit it. Those rates are 0%, 15%, or 20% depending on your income.

The Catch

The step-up only triggers at death. Transfer the asset early, through a gift, a joint account retitling, or a quitclaim deed to a child, and you destroy the benefit. The original basis tags along. The other trap: an alternate valuation date exists (six months after death), but the executor must elect it on the estate tax return, and the choice is irrevocable. Finally, while federal estate tax exemptions are high in 2026, several states impose their own estate or inheritance taxes that the step-up does not erase. Ask your custodian for the date-of-death valuation in writing the moment the account transfers. That single document is what locks in the savings.

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