The Grantor Retained Annuity Trust Estate Tax Strategy: How the Walton Family Passed Billions to Their Heirs Tax-Free.

A business owner sitting on a concentrated position in fast-growing company stock has a specific problem. The shares are worth far more than the cost basis, they are likely to keep climbing, and every dollar of future appreciation is also a future estate tax bill at 40%. The grantor retained annuity trust estate tax strategy is built for exactly this situation. You move the stock into a trust for a few years, take almost all of it back as an annuity, and let the growth above a government-set hurdle rate pass to your children with no gift tax and no use of your lifetime exemption.

The technique has a famous origin story and famous users. In the 1990s Audrey Walton, a member of the family behind Walmart, set up two grantor retained annuity trusts and funded each with roughly $100 million of Walmart stock. She reported the taxable gift to her daughters as $0. The IRS said the real gift was about $3.8 million and issued a deficiency. In Walton v. Commissioner, 115 T.C. 589 (2000), the Tax Court sided with Walton, and the agency formally gave up the fight in Notice 2003-72. The zeroed-out GRAT has been standard practice ever since, to the point that practitioners still call the structure a Walton GRAT.

A GRAT is an irrevocable trust you fund with an asset, usually appreciating stock. For a set term, often two years, the trust pays you back a fixed annuity. Whatever is left in the trust when the term ends goes to your beneficiaries. The gift you are making is the remainder, the value of what your heirs might eventually receive, and IRC §2702 tells you how to value it. As long as your retained annuity is a qualified interest, its value is calculated using the §7520 rate, the hurdle rate the IRS publishes every month. For June 2026 that rate is 5.0%.

Here is the move the Walton case unlocked. If you set the annuity high enough that its present value equals the entire amount you put in, the remainder is valued at zero. You report a $0 gift on Form 709 and use none of your lifetime exemption. If the trust assets grow faster than the 5.0% hurdle, every dollar of that excess growth lands with your heirs free of gift and estate tax. If the assets only match the hurdle, nothing passes, you simply get your property back, and you are out only the legal fees. The downside is small and the upside is large, which is why the structure works best with volatile, fast-appreciating stock.

The clearest example of scale is Sheldon Adelson, the late casino magnate behind Las Vegas Sands and a major Republican donor. According to a 2013 Bloomberg investigation by Zachary Mider, Adelson used more than 30 GRATs to pass at least $7.9 billion to his heirs while avoiding roughly $2.8 billion in gift tax. He did it by rolling company stock in and out of short-term trusts and capturing the appreciation on each pass. The same reporting estimated the technique had cost the Treasury more than $100 billion since 2000, and that more than half of the 100 richest Americans had used GRATs or similar trusts. ProPublica later documented the same pattern across the Forbes 400.

The mechanics scale down. The same structure that moved billions for Adelson works for a founder holding $10 million of post-IPO stock, or a Utah business owner whose company has a few strong years ahead of it. Utah imposes no state estate tax and no inheritance tax, so the only transfer tax in play here is federal. But the federal exposure is real once an estate clears the 2026 exemption of $15 million per person, which the One Big Beautiful Bill Act made permanent under IRC §2010(c)(3). A married couple shields $30 million, and everything above that is taxed at 40%.

Two things sink a GRAT. The first is dying during the term. If you do not outlive the annuity period, much or all of the trust assets are pulled back into your taxable estate under IRC §2036, and the planning unwinds, which is why short two-year terms are common. The second is underperformance. If the stock does not beat the 5.0% hurdle, the GRAT simply hands your assets back and you have lost only the setup cost. A GRAT also has to make its annuity payments on time and in the correct amount, and paying in kind with shares requires a defensible valuation each year, the same appraisal discipline that drives the conservation easement deduction.

A GRAT is not the only way the very wealthy move appreciation outside the estate. Some pair it with the kind of tax-free compounding Peter Thiel built inside a Roth IRA. What the GRAT adds is the ability to transfer an asset you already hold, today, while betting on its future growth, without spending a dollar of exemption. In a low-hurdle-rate environment, or with a stock you have real conviction about, that bet is heavily tilted in your favor. The price of admission is a few years of patience and clean paperwork.