Step-Up in Basis: Inheriting ETF Investments
Inherit a long-held ETF and the decades of gains that built up inside it can vanish for tax purposes. The step-up in basis is one of the most generous rules in the code.
Don't have time? Here's what you need to know:
- 1Step-up resets an inherited ETF's basis to its date-of-death value, erasing the lifetime capital gain for income-tax purposes.
- 2It applies to taxable brokerage holdings and real estate, but not to traditional IRAs, which stay taxable to heirs.
- 3Holding a deeply appreciated taxable position until death can be more tax-efficient than selling and triggering the gain.
- 4Gifting appreciated assets during life passes your low basis along and forfeits the step-up the heir would get at death.
What Step-Up in Basis Means
Cost basis is what you paid for an investment, and capital-gains tax is owed on the difference between that basis and the price you sell at. The step-up in basis is a rule that resets an inherited asset's cost basis to its fair market value on the original owner's date of death. The gain that accumulated during the deceased's lifetime is effectively forgiven for income-tax purposes.
An example makes it concrete. Suppose someone bought an S&P 500 ETF like VOO decades ago for $30,000 and it is worth $200,000 when they die. Their heir's cost basis steps up to $200,000. If the heir sells the next day at $200,000, the taxable gain is zero. The $170,000 of appreciation that would have been taxable had the original owner sold simply disappears. Heirs are taxed only on growth that happens after they inherit.
Why It Reshapes Late-Life Decisions
The step-up turns conventional advice on its head for older investors. Normally you might rebalance or diversify out of a concentrated, highly appreciated position. But if that position has a huge embedded gain and you are likely to hold it for the rest of your life, selling it triggers a tax that dying with it would have erased entirely. For someone late in life, holding a highly appreciated taxable asset until death can be the more tax-efficient choice.
This is why advisors often distinguish between assets to spend during life and assets to leave behind. The asset with the largest unrealized gain is frequently the best one to hold for the step-up, because it carries the most lifetime tax that the step-up will wipe out. Meanwhile, lower-gain or tax-advantaged accounts are better candidates to spend down first.
Tip: If you're older and holding a deeply appreciated ETF you don't need to sell, the step-up may make holding it for life more tax-efficient than diversifying out and paying the gain now.
What Qualifies, and What Doesn't
Step-up applies to assets that pass through an estate at death, which covers taxable brokerage holdings, real estate, and similar capital assets. It does not apply to tax-deferred retirement accounts: an inherited traditional IRA carries no step-up, because that money was never taxed and every withdrawal remains ordinary income to the heir. Roth IRAs do not need a step-up since their qualified withdrawals are already tax-free.
Community-property states offer an extra wrinkle. In them, when one spouse dies, the entire jointly held asset can receive a full step-up, not just the deceased spouse's half, which is a significant advantage over common-law states where only the decedent's portion steps up. Gifts made during life are different too: a gifted asset generally keeps the giver's original basis rather than getting a step-up, so giving appreciated stock away during life can forfeit the benefit the heir would have received at death.
| Asset transferred | Step-up at death? |
|---|---|
| Taxable brokerage ETFs/stocks | Yes |
| Real estate | Yes |
| Traditional IRA / 401(k) | No (remains taxable income to heir) |
| Roth IRA | Not needed (already tax-free) |
| Asset gifted during life | No (carries giver's basis) |
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Practical Steps for Heirs and Owners
If you inherit ETFs, the most important task is documenting the date-of-death value, since that becomes your new basis and determines your tax if you ever sell. Get a record of the fair market value on that date from the brokerage statement, and keep it. Because your basis is reset to that value, you generally have wide latitude to sell and reposition inherited holdings into your own plan with little or no immediate tax cost.
For owners doing their own planning, the takeaway is to be deliberate about which appreciated assets to hold versus sell late in life, and to coordinate with beneficiary and transfer-on-death designations so the right assets reach heirs with their step-up intact. As with all of this, the rules around basis and estates are detailed and occasionally change, so confirm the specifics with a tax professional before making a large decision.
Important: Giving away an appreciated ETF during your lifetime hands the recipient your low original basis, not a step-up. The same asset left at death would have had its gain erased, so lifetime gifting of big winners can backfire.
Frequently Asked Questions
How does step-up in basis work when I inherit an ETF?
Your cost basis in the inherited ETF resets to its fair market value on the original owner's date of death. The capital gain that built up during their lifetime is erased for income-tax purposes, so if you sell shortly after inheriting, you owe tax only on any growth that occurred after the date of death, which is often little or nothing.
Does step-up in basis apply to inherited IRAs?
No. Tax-deferred accounts like traditional IRAs and 401(k)s do not get a step-up, because that money was never taxed; heirs pay ordinary income tax on every withdrawal. Roth IRAs don't need a step-up since qualified withdrawals are already tax-free. Step-up applies to taxable assets like brokerage holdings and real estate.
Should I sell my appreciated ETFs or hold them for the step-up?
If you're older and don't need to sell, holding a deeply appreciated taxable position until death can erase the entire lifetime gain via the step-up, which may beat selling and paying the tax now. The larger the embedded gain, the more valuable holding becomes. Weigh this against diversification needs and consult a tax professional.
Is it better to gift appreciated stock or leave it at death?
Generally leaving it at death is more tax-efficient for appreciated assets. A lifetime gift carries your original low basis to the recipient, so they inherit your unrealized gain. The same asset left at death gets a step-up that erases that gain. Gifting can still make sense for other reasons, but it forfeits the step-up benefit.
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Alex Harrington
CFA Level II Candidate, Finance & Economics
Alex Harrington is an independent ETF researcher and personal finance writer with over 8 years of experience analyzing exchange-traded funds. A CFA Level II candidate with a background in economics, Alex has reviewed 800+ ETFs and helped thousands of beginners build their first investment portfolios through clear, jargon-free education.
This content is for educational purposes only and does not constitute financial advice. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.