A Spousal Lifetime Access Trust allows married couples to use their current estate tax exemption while maintaining indirect access to the assets through the beneficiary spouse. With the 2026 exemption sunset approaching, SLATs are the most widely used planning strategy for married couples.
A Spousal Lifetime Access Trust (SLAT) is an irrevocable trust funded by one spouse for the benefit of the other spouse (and typically their children). By funding the SLAT with assets up to the current gift tax exemption ($13.61 million in 2024), the donor spouse removes those assets from their taxable estate while the beneficiary spouse retains access to the trust assets during their lifetime.
Spouse A (the donor) creates an irrevocable trust and funds it with assets — typically $5–$13 million. Spouse B (the beneficiary) is a beneficiary of the trust and can receive distributions for health, education, maintenance, and support. The children are also beneficiaries and receive the trust assets at Spouse B's death.
The gift to the trust uses Spouse A's gift tax exemption. Since the exemption is currently $13.61 million (and scheduled to drop to approximately $7 million in 2026), funding the SLAT now locks in the larger exemption.
The Key Benefit: The assets in the SLAT are outside Spouse A's taxable estate. If Spouse A dies, those assets are not subject to estate tax. Spouse B can still access the assets through distributions from the trust.
The Reciprocal Trust Doctrine Risk: If both spouses create SLATs for each other with identical terms, the IRS may treat them as reciprocal trusts — essentially undoing the estate tax benefit. To avoid this, the two SLATs should have meaningfully different terms: different trustees, different distribution standards, different funding dates, or different beneficiaries.
The Divorce Risk: If the spouses divorce, the beneficiary spouse continues to have access to the SLAT assets — which can be a significant problem. Some SLAT documents include provisions that terminate the beneficiary spouse's interest upon divorce.
The Death Risk: If the beneficiary spouse dies before the donor spouse, the donor spouse loses indirect access to the SLAT assets. This can be addressed by including the donor spouse as a discretionary beneficiary (though this may cause estate inclusion issues) or by purchasing life insurance to replace the lost access.
SLATs are most effective when funded before the 2026 estate tax exemption sunset. Families who wait until after December 31, 2025, will be working with a significantly smaller exemption — potentially $6 million less per person.
Reciprocal trust doctrine — if both spouses create SLATs with identical terms, the IRS may treat them as reciprocal trusts.
Divorce risk — the beneficiary spouse retains access to SLAT assets even after divorce.
Death of beneficiary spouse — the donor spouse loses indirect access to SLAT assets.
Irrevocability — once funded, the SLAT terms are difficult to change.
SLATs are a core component of the Mini Family Office strategy for married couples with taxable estates. They work best when combined with a revocable living trust (for the remaining estate), a private foundation (for charitable giving), and a coordinated investment strategy.
A private foundation can be named as a contingent beneficiary of a SLAT — ensuring that if both spouses die before the trust terminates, the assets pass to the foundation rather than to the children outright. This provides additional flexibility and maintains the charitable tax benefits.
Spousal Lifetime Access Trust (SLAT) — uses current exemption while maintaining spousal access
Dynasty Trust — alternative for families who want multi-generational planning
Irrevocable Life Insurance Trust (ILIT) — provides estate liquidity and replaces lost access
Revocable Living Trust — coordinates with the SLAT for the remaining estate
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View ResearchSLATs are one of the most effective strategies for married couples facing the 2026 estate tax exemption sunset. Our pro bono assessment evaluates whether a SLAT is appropriate for your situation and how to structure it to avoid the common pitfalls.
Act before December 31, 2025 — the current estate tax exemption is scheduled to drop significantly, and the window to fund a SLAT at the current level is closing.
Make sure the two SLATs are meaningfully different — different trustees, different distribution standards, different funding dates — to avoid the reciprocal trust doctrine.
Consider the divorce risk carefully — if there is any possibility of divorce, include provisions in the SLAT that address the beneficiary spouse's interest upon divorce.
Purchase life insurance to replace the access lost if the beneficiary spouse dies — an ILIT can hold the policy outside both estates.
Every married client with a taxable estate should be evaluated for SLAT suitability — the 2026 sunset makes this the most important planning window in a generation.
Document the differences between the two SLATs carefully — the reciprocal trust doctrine is a significant risk and the IRS scrutinizes SLATs closely.
Coordinate with the client's financial advisor on asset selection for the SLAT — assets expected to appreciate significantly are the best candidates.
Consider including a trust protector in the SLAT document — an independent party with the power to modify trust terms can adapt the SLAT to changing circumstances.
Estate Planning Hotline — c/o Estate Law Training Center / Law & Tax Foundation
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