What Is the Generation-Skipping Trust?

A Generation-Skipping Trust (GST) is a legal estate planning tool designed to pass assets to a beneficiary who is at least two generations younger than the grantor—commonly a grandchild—while minimizing estate and gift taxes. This type of trust intentionally skips the grantor’s children (or next generation) as direct beneficiaries to reduce the cumulative effect of estate taxation over multiple generations. GSTs are particularly useful for high-net-worth families looking to preserve wealth over the long term.

Purpose and Design

The main purpose of a Generation-Skipping Trust is to avoid double taxation that would typically occur if assets were transferred first to the grantor’s children and then later to the grandchildren. In a traditional estate transfer, the estate might be taxed when passed from parent to child and again when passed from child to grandchild. By using a GST, the grantor can transfer wealth directly to grandchildren or another "skip person," allowing the assets to bypass one round of estate taxation.

A GST must be irrevocable, meaning that once the trust is established and funded, the grantor cannot change its terms or reclaim the assets. This permanence allows the trust to stand apart from the grantor’s taxable estate. Typically, the trust names grandchildren or even great-grandchildren as beneficiaries, although it can also include unrelated individuals who are at least 37.5 years younger than the grantor.

Skip Persons and Non-Skip Persons

Under U.S. tax law, a “skip person” is defined as someone who is at least two generations below the grantor. Grandchildren qualify, as do great-grandchildren. In some cases, unrelated individuals may be considered skip persons if they are significantly younger than the donor.

Non-skip persons, such as the grantor’s children, may still be given access to income from the trust during their lifetimes, depending on how the trust is drafted. However, the principal is preserved for the younger generation. Some GSTs are structured so that children benefit indirectly—such as receiving income distributions or being granted limited powers of appointment—while still maintaining the overall tax efficiency of the trust.

Generation-Skipping Transfer Tax

The Generation-Skipping Transfer Tax (also abbreviated GSTT) is a federal tax imposed on transfers made to skip persons. It applies in addition to federal estate and gift taxes. To mitigate this, the IRS allows individuals to use a GST tax exemption, which is a lifetime exclusion amount that can be applied to generation-skipping transfers.

For 2025, the GST tax exemption is $13.99 million per individual (subject to change due to legislation or inflation adjustments). Married couples can double this amount by electing portability of exemptions, allowing them to jointly pass up to $27.98 million in GST-exempt transfers.

Any amount exceeding the exemption limit is taxed at a flat rate equal to the highest federal estate tax rate—currently 40%. For this reason, careful allocation of the GST exemption is essential during estate planning.

Benefits and Strategic Uses

One of the primary benefits of a Generation-Skipping Trust is tax efficiency. By transferring wealth across multiple generations in a single step, families can preserve more capital for future heirs. The trust also protects assets from potential creditors, divorce settlements, and poor financial decisions by children.

GSTs are commonly used in the following contexts:

• Long-Term Wealth Preservation: The trust ensures that wealth is retained within the family across generations.
• Asset Protection: Assets in a GST are generally shielded from beneficiaries’ creditors.
• Tax Mitigation: Proper use of exemptions and trust structuring minimizes exposure to estate and transfer taxes.

A GST can be integrated with other advanced estate planning tools, such as irrevocable life insurance trusts (ILITs) or dynasty trusts, for more comprehensive strategies.

Considerations and Risks

Despite their benefits, Generation-Skipping Trusts are complex instruments that require detailed planning and careful compliance with tax regulations. If the trust is improperly structured or the GST exemption is misapplied, the result can be a significant tax liability.

Other considerations include:

• Loss of Control: The grantor cannot alter an irrevocable trust after it is funded.
• Generation Assignment Rules: IRS rules can be complicated, especially with adopted children, stepchildren, or individuals not directly related by blood.
• Administrative Complexity: Managing and reporting GSTs requires legal and tax expertise, making them more expensive to establish and maintain than simpler estate planning tools.

Additionally, tax laws and exemption thresholds can change over time. This means that a GST plan created under one set of laws might need revision if the legal landscape shifts. Regular reviews with an estate planning attorney or tax professional are essential.

The Bottom Line

A Generation-Skipping Trust offers a powerful way to transfer wealth while reducing the impact of estate and transfer taxes across multiple generations. It provides tax advantages, protects assets, and aligns with long-term financial goals, but it is also a complex tool that demands strategic design and expert oversight. Families considering a GST should weigh the potential tax savings against the legal, administrative, and generational dynamics involved.