Irrevocable dynasty trusts allow multi-generational wealth transfer without triggering a 40% federal estate tax at each death.
A dynasty trust structure used by the Rockefeller family since 1934 has enabled six generations to transfer wealth without incurring federal estate taxes. The irrevocable trusts remove assets from taxable estates permanently, avoiding a 40% tax at each generational transfer.
The $15 million federal estate tax exemption, made permanent in 2026, limits the benefit to estates exceeding that threshold. Failure to allocate generation-skipping transfer (GST) exemption on IRS Form 709 in the gift year exposes future transfers to the 40% tax.
Dynasty trusts remain legal and continue to offer a template for ultra-high-net-worth families seeking to preserve wealth across generations without estate tax liabilities.