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Tax & Compliance

GST Exemption

Last updated 17 July 2026

The GST exemption is the amount an individual can allocate under United States federal law to protect generation-skipping transfers from GST tax. It can be allocated to a direct transfer or to a trust that may benefit grandchildren or later generations. When properly allocated, it can reduce or eliminate GST tax on covered transfers and future trust growth, subject to the trust's tax status and continued compliance.

The exemption is related in amount to the federal gift and estate tax exemption, but it is a separate allocation. Using gift tax exemption does not automatically prove that GST exemption was allocated as intended. Federal automatic-allocation rules can apply to some transfers, while elections may be available or required to obtain a different result.

Why it matters for family offices

The stakes grow over time. A missed allocation to a long-lived trust may expose later appreciation or distributions, while an unnecessary allocation can consume exemption that was needed elsewhere. The office therefore maintains a donor-specific schedule showing transfers, tax returns, allocations, elections, and each trust's inclusion ratio.

Exemption amounts and law can change, so family offices avoid relying on a static planning deck. Qualified United States tax advisers determine the filing and allocation, including whether a timely or late allocation is available and how assets should be valued. The office's contribution is complete records and implementation.

How it shows up in practice

Suppose a parent funds two trusts in the same year, one for children only and another that can continue for grandchildren. Both transfers use part of the parent's gift tax exemption. The family office sends the deeds, valuations, and funding evidence to the US tax adviser, who decides how GST exemption should be allocated and reports the treatment on the appropriate return.

Years later, the second trust has grown substantially. Before making a distribution to a grandchild, the trustee asks for its GST status. The office produces the filed return and allocation schedule rather than assuming the trust name proves exemption. That evidence lets the adviser determine whether the distribution is covered and prevents the same exemption from being counted twice across structures.

Generation-Skipping Transfer Tax (GST)

A US federal tax on wealth transfers to recipients two or more generations below the donor, such as grandchildren, or to unrelated persons more than 37.5 years younger. Levied at a flat 40 percent on top of any estate or gift tax, it prevents families from skipping a generation of taxation. Careful allocation of the GST exemption is what makes multi-generational structures like dynasty trusts work.

Lifetime Exemption

The total amount an individual can transfer during life and at death free of US federal estate and gift tax, set at US$15 million per person (US$30 million per couple) from 2026 and indexed for inflation. Transfers above the exemption are taxed at 40 percent. The exemption is portable between spouses and is the central planning number in US estate strategy.

Dynasty Trust

A long-duration trust designed to hold and grow family wealth across many generations, in some jurisdictions in perpetuity. By keeping assets inside the trust, families can shield wealth from estate and transfer taxes at each generational handover as well as from creditors and divorce claims. Dynasty trusts are a cornerstone of multi-generational planning for UHNW families in jurisdictions that permit them.

Gift Tax Return (Form 709)

The US federal return used to report gifts that exceed the annual exclusion or otherwise require disclosure, filed by the donor. The return tracks how much of the donor's lifetime exemption has been used and starts the statute of limitations if valuations are adequately disclosed. Accurate gift records across decades are essential for eventual estate tax calculations.

Estate Tax Return (Form 706)

The US federal filing that reports a deceased person's assets, liabilities, and their values to calculate estate tax owed. It is also used to elect portability of a deceased spouse's unused exemption. Preparing a 706 for a complex estate depends heavily on organised records of entities, valuations, and cost basis, work the family office does long before it is needed.

See how family offices put this into practice

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