An Estate Can Pick Its Own Valuation Date. Here’s the Six-Month Do-Over That Cuts the Tax Bill When Markets Fall

If you’re the executor of an estate, you have a rewind button most people never hear about. Federal law lets you value everything the decedent owned as of the date of death, or six months later. That single choice, called the alternate valuation date election, can slice the federal estate tax bill when markets tumble in the months after a death. Given that the VIX ripped from a low of 13.47 on December 24, 2025 to a peak of 31.05 on March 27, 2026, the six-month window is not a theoretical concern this year.

The Six-Month Rewind, Explained

Here is the buried rule. When someone dies, the default is to value every asset in the estate at its fair market value on the date of death. But the executor can instead elect to value the entire estate as of six months after the date of death. If a concentrated stock position cratered, a private business lost a key contract, or the broader market rolled over during that window, the estate can lock in the lower number and pay tax on the smaller figure.

The Statute Behind It

This mechanism is codified in Internal Revenue Code Section 2032, and the election is made on Form 706, the United States Estate (and Generation-Skipping Transfer) Tax Return. Once made, the election is irrevocable and applies to every asset in the gross estate. You cannot cherry-pick the losers and leave the winners at their date-of-death value.

Who Actually Gets to Use It

Only estates that owe federal estate tax qualify. Congress wrote a hard gate into the statute: the election is permitted only if it reduces both the value of the gross estate and the estate tax liability. If the estate owes zero federal estate tax, the election is off the table. For decedents dying in 2026, the basic exclusion amount is $15,000,000, up from a total of $13,990,000 for estates of decedents who died in 2025. That number, part of the One, Big, Beautiful Bill adjustments, means most families never file Form 706 in the first place. The alternate valuation date is a tool for taxable estates, family-business estates, and estates loaded with concentrated equity positions.

How the Executor Pulls the Trigger

1. Take a snapshot of every asset in the gross estate as of the date of death.
2. Watch the portfolio for six months. If markets slide, or if a concentrated holding takes a real hit, run the numbers under both scenarios.
3. Handle any assets sold, exchanged, or distributed inside the six-month window separately: those get valued as of the disposition date, not the six-month mark.
4. Confirm the election lowers both the gross estate value and the tax due. If it fails either test, you cannot elect.
5. Make the election on a timely filed Form 706. The return is generally due nine months after the date of death, unless you file for an extension.

Miss the deadline and the door closes. The election cannot be made on a late return, and it cannot be undone once made.

The Trap Nobody Mentions at the Funeral

Here is the tradeoff heirs need to sit with. A lower estate valuation means a lower stepped-up basis for the beneficiaries. When they eventually sell that inherited stock or property, their capital gain is measured against the alternate valuation, not the higher date-of-death price. You save on estate tax today at 40%, but you may hand your heirs a larger capital gains bill later. In a market that then rebounded, as it did after the March 2026 spike, the numbers can flip against you in a hurry. The S&P 500 is up 14.07% year to date through August 13, 2026.

This is an executor-level decision, it is irrevocable, and the math is fact-specific to each estate. Run it with a qualified estate attorney or CPA before you sign the return.

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