GRAT: How a Grantor Retained Annuity Trust Reduces Gift Tax

A grantor retained annuity trust (GRAT) is an irrevocable trust that lets you transfer appreciated assets to heirs while reducing or eliminating gift-tax liability, by paying yourself an annuity from the trust and allowing any remaining growth to pass tax-free. If structured correctly and you survive the trust term, heirs inherit the appreciated assets with little or no gift-tax cost.

How a GRAT Works

You create an irrevocable trust and fund it with appreciated assets—typically stock, a private business stake, or real estate. In exchange for that funding, you retain the right to receive annuity payments (fixed dollar amounts or fixed percentages of the original trust value) for a set number of years. At the end of the term, whatever remains in the trust passes to your named heirs or beneficiaries.

The gift-tax magic lies in the discount. The IRS values your annuity right using the Section 7520 rate—a monthly rate tied to mid-term Treasury yields. That rate is used to calculate the present value of all your future annuity payments. The taxable gift is simply the original trust funding amount minus the present value of the annuity you’re retaining.

If the Section 7520 rate is low—say, 3%—and the trust assets grow at 8%, the gap between the discount rate and actual performance is pure bonus for your heirs. That surplus passes to them free of gift or estate tax, as long as you survive the trust term and the trust is properly structured.

The Section 7520 Rate and Gift Valuation

The Section 7520 rate fluctuates monthly, set by the IRS and published each month. It directly controls whether a GRAT is attractive and how much gift tax you owe.

Suppose you fund a GRAT with $1 million. The Section 7520 rate is 3%, and you structure it to pay you a 5% annuity ($50,000 per year) for five years. The present value of your five $50,000 payments, discounted at 3%, is roughly $230,000. Your taxable gift is therefore about $770,000 (the remaining value available for heirs).

Now shift the scenario: the Section 7520 rate rises to 6%. The present value of those same $50,000 payments increases to roughly $210,000, making the taxable gift only about $790,000. The higher discount rate helps you because your annuity right is now worth less in today’s dollars, leaving more value to pass to heirs as a smaller taxable gift.

Long-term Treasury yields drive the 7520 rate, so GRATs are most attractive when rates are low. Many planning professionals “reverse” them or launch multiple short-term GRATs in low-rate environments to lock in favorable valuations.

The Mortality Contingency

A GRAT’s greatest risk is your death during the trust term. If you die before the annuity payments are exhausted, the remaining trust assets flow back into your estate and are subject to full estate tax. The entire strategy fails.

This is why most GRATs have short terms—two, three, or even one year. A short term reduces mortality risk and makes the structures attractive even to older individuals. Some practitioners stack multiple two-year GRATs in succession, so if you die, only the current GRAT’s assets return to the estate; the prior ones have already distributed to heirs.

Mortality risk also explains why GRATs are typically funded with volatile or high-growth assets. If you’re funding a GRAT with slow-growth bonds, the upside is limited and the risk isn’t worth it. The assets should be expected to generate returns well above the Section 7520 rate.

“Zeroing Out” the Gift

A GRAT is “zeroed out” when its structure is designed so the taxable gift is zero or near-zero. This happens when the annuity payments are set high enough that their present value nearly equals the entire trust funding.

For example, if you fund a trust with $1 million and the Section 7520 rate is 4%, you could structure annuity payments such that their present value is $999,000, leaving only $1,000 as a taxable gift. You’ve used almost none of your lifetime gift-tax exemption, yet positioned heirs to capture all growth above the 4% discount rate.

Zeroed-out GRATs are common and legal, though they rely on accurate Section 7520 rate assumptions at the time of funding. If the trust underperforms the discount rate, there’s no upside; if it outperforms, that excess is pure tax-free wealth transfer.

Tax Outcomes and Who Benefits

The primary beneficiary of a GRAT is a wealthy individual with significant appreciation upside—someone holding a concentrated stock position, a private business, or real estate expected to appreciate faster than prevailing interest rates. The tax saving scales with the gap between the Section 7520 rate and actual returns.

A GRAT does not reduce income tax. You still owe income tax on the annuity payments you receive and on any interest or dividends the trust generates during the term. What you avoid is estate and gift tax on the appreciation above the discount rate.

GRATs are irrevocable; you cannot change your mind. If the assets underperform, you cannot unwind the structure without incurring a taxable event. They also require annual accounting and trust tax filings, so professional fees apply.

Variations and Strategic Uses

Charitable Remainder GRATs combine GRAT principles with charitable giving, allowing a portion of the remainder to go to a qualified charity while the rest passes to heirs.

Consecutive GRATs stack multiple short-term trusts. If you die, only the current GRAT’s assets flow back to your estate; prior ones complete their terms and distribute to heirs.

Dynasty GRATs in states permitting perpetual trusts can extend the benefit across multiple generations, as long as the initial grantor survives the first term.

See also