The generation-skipping transfer tax is the second layer on gifts that jump a generation. An inter vivos direct skip is a lifetime transfer that meets three tests together: it is subject to gift tax, it conveys an interest in property, and it goes to a skip person such as a grandchild.
Outright cash to a granddaughter reported on Schedule A is the textbook case, and it is reported for both taxes at once.
A direct skip is only one of three GST events: a taxable distribution is a later distribution from a trust to a skip person, and a taxable termination is the ending of an interest in trust with skip persons holding what follows, such as the close of an ETIP.
Gifts that are only gift-taxed today but can face GST at a later distribution or termination are listed in Part 3 of Schedule A. An indirect skip is the narrow statutory case inside that group: a transfer subject to gift tax, other than a direct skip, made to a GST trust that could itself produce a GST; other trust transfers that may later face GST are reported alongside it as Other Transfers in Trust.
The same return allocates the lifetime GST exemption — $13,990,000 for 2025 — to property transferred during life; the executor allocates it on Form 706 to transfers taking effect at death, and every allocation is irrevocable.
Exemption is automatically allocated to inter vivos direct skips unless the donor elects out, and to indirect skips to the extent needed to make the inclusion ratio zero; an allocation to ETIP property takes effect no earlier than the close of the period.
Transfers fully absorbed by the annual exclusion, and most spousal transfers, stay outside the GST on that return.
Worked example
Howard gives $60,000 outright to his grandson and $60,000 outright to his son. The grandson's gift meets all three tests and is a direct skip reported for gift and GST tax together, with 2025 exemption allocated to it automatically unless Howard elects out. The son's gift is a nonskip transfer reported for gift tax alone. Had Howard instead funded a trust paying his children for life with remainder to grandchildren, the funding would be listed in Part 3 — an indirect skip if the trust is a GST trust, otherwise an Other Transfer in Trust — so exemption could attach early and drive the inclusion ratio to zero, while a later payout to a grandchild would be the GST event: a taxable distribution, or a taxable termination where an interest ends.