When a GRAT Beats a Gift

Published 2026-07-07 · Optimist Tax Advisors

Both moves transfer future appreciation to the next generation. They differ in one economic dimension: what they cost in lifetime exemption.

The trade

An outright gift of $10M into a trust consumes $10M of exemption and transfers 100% of subsequent growth. A zeroed-out GRAT funded with the same $10M consumes essentially no exemption but transfers only the growth above the Section 7520 hurdle rate, and returns everything if the asset underperforms. The gift is a purchase of the whole return stream at full exemption cost; the GRAT is a free option on the excess return.

When the GRAT wins

• Exemption is scarce. Families already at or beyond $30M of combined transfers should spend remaining exemption only on assets they cannot GRAT effectively.
• The asset is convex. Pre-IPO stock, a business approaching a sale, anything that might reprice sharply. The GRAT captures the reprice at near-zero cost; if the event fails, nothing was spent.
• The 7520 rate is low relative to expected return. The narrower the hurdle, the more of the return the GRAT captures.

When the gift wins

• Steady compounders over long horizons. The GRAT returns the principal plus hurdle to your estate; a gift moves the entire compounding stream. For an asset expected to grow 8% for 25 years, the gift transfers far more terminal value.
• Generation-skipping goals. GST exemption cannot be effectively allocated to a GRAT until the term ends. Dynasty planning wants completed gifts.
• Mortality risk matters. A GRAT that outlives its grantor fails back into the estate; a completed gift does not.

The practical answer

Most large plans use both: exemption gifts for the durable compounders and dynasty layer, rolling two-year GRATs for the volatile and event-driven assets. Modeling the split against your actual balance sheet is the work.