For families with significant wealth, transferring assets to the next generation isn't always as simple as making a gift. What you transfer—and when—can have a meaningful impact on the outcome.
A Grantor Retained Annuity Trust, commonly called a GRAT, is one estate-planning strategy designed to transfer an asset's future appreciation while returning much of its original value to the person establishing the trust.
That distinction is what makes GRATs worth understanding.
How Does a GRAT Work?
A GRAT is an irrevocable trust, typically established for a set number of years.
The basic structure is straightforward:
If the assets grow faster than the IRS-assumed rate, the appreciation above that threshold may pass to beneficiaries with limited additional gift-tax consequences.
In practical terms, the strategy is designed to transfer some of an asset's future growth rather than simply giving away the asset today.
Why Does the Section 7520 Rate Matter?
The IRS publishes the Section 7520 rate monthly. For a GRAT, it acts as a hurdle: the trust assets generally need to outperform that rate for the strategy to produce a meaningful transfer to beneficiaries.
If they do, the excess appreciation may remain in the trust and pass to the beneficiaries at the end of the term.
If they don't, there may be little or nothing left to transfer.
This is why a GRAT isn't purely a tax strategy. The investment characteristics of the asset placed in the trust matter, too.
Which Assets May Be Well Suited for a GRAT?
GRATs are often considered for assets with meaningful appreciation potential. Depending on a family's circumstances, those might include:
Expected return isn't the only consideration. Valuation, volatility, liquidity, cash flow, taxes, and the family's willingness to give up future appreciation all play a role.
Asset selection should ultimately support the family's broader estate and financial plan.
What Happens If the Assets Don't Outperform?
Not every GRAT produces a meaningful transfer.
If the assets don't appreciate enough to clear the IRS hurdle rate, the anticipated amount passing to beneficiaries may be small or nonexistent. Through the required annuity payments, assets generally return to the grantor rather than remaining in the trust for beneficiaries.
There are also legal and administrative costs, and the grantor's survival of the GRAT term is an important estate-planning consideration.
A GRAT is therefore not a guaranteed tax outcome. Its success depends largely on the asset, its performance, interest rates, and the structure and length of the trust.
Where Does a GRAT Fit Into an Estate Plan?
For families with substantial wealth, a GRAT is usually one piece of a much larger plan.
Outright gifts, other irrevocable trusts, charitable planning, business succession, and family goals may all need to be considered alongside it.
The value of a GRAT isn't simply whether it can transfer appreciation efficiently. What matters is whether that transfer supports what the family is trying to accomplish across generations.
For families that own assets with meaningful appreciation potential, a GRAT may be one strategy worth discussing with their advisory team.
When might a GRAT make sense for your family?
Understanding the mechanics is the first step. The next is determining whether the strategy fits your assets, goals, and broader estate plan.
Read next: [When Does a GRAT Make Sense for Your Family?]