SLATs: An Estate-Planning Strategy for Couples

Spouses can transfer up to the federal estate and gift tax exemption limit—$13.99 million per individual and $27.98 million for married couples in 2025 ($15 million and $30 million, respectively, in 2026)—to a SLAT.

Here's how it would work:

1. The donor spouse gifts cash, life insurance, marketable securities, real estate, or other assets of which they are the sole owner to a SLAT and reports it on their gift tax return (Form 709). Take note that residents of the nine community property states—Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin—may first need to convert community property assets into separate property assets, typically via a so-called partition agreement.
2. Upon funding the SLAT, the beneficiary spouse can request distributions of income or principal—from which the donor spouse too may benefit, albeit indirectly.
3. When the SLAT terminates, typically at the death of the beneficiary spouse, the remaining trust assets pass to the remainder beneficiaries named in the trust document. 

For example, say Sarah and Neil have joint and separate assets totaling $35 million, which are likely to further appreciate while they're still alive. Were they to transfer $13.99 million each into two SLATs benefiting each other (see "Dual SLATs"), they would be able to exclude the full $27.98 million—plus any future appreciation and income—from their taxable estates in 2025 while still benefiting from those assets. They would then have available their remaining $7.02 million in shared assets, plus their SLAT distributions, to support their ongoing income needs.

Take note that several states have their own estate tax system and many offer significantly lower exemptions than at the federal level. Also, a SLAT can be structured as a dynasty trust, providing significant benefits with respect to the generation-skipping transfer tax. A tax professional can offer guidance on creating a SLAT and help ensure you maximize all the tax benefits available.

SLATs may seem like a way to have your cake and eat it, too, but there are risks.

First and foremost, if your spouse suddenly passes away, you lose your indirect access to their SLAT payouts. The same is true in the case of divorce, unless you include a provision that states your trust is for the benefit of your current and future spouses, in which case you can regain indirect access to the assets once you remarry.

Be aware, too, that assets held in a SLAT do not receive a step-up in cost basis at the donor spouse's death, potentially increasing the capital gains tax liability to the remainder beneficiaries.

A third-party trustee is often a good idea for trusts of substantial size, but it's perhaps even more favorable in the case of SLATs. That's because if the beneficiary spouse serves as trustee, distributions must be limited to the health, education, maintenance, and support (HEMS) standard—which is determined at the SLAT's creation and cannot be changed—whereas a third-party trustee has more discretion and could increase distributions above HEMS, if warranted.

That said, if you do name your beneficiary spouse as the trustee, you can add a provision that gives them the option of appointing an independent trustee. Another popular trust clause—known as the "5 or 5 power"—allows the beneficiary spouse to annually withdraw up to $5,000 or 5% of trust assets, whichever is greater, in addition to HEMS.

While changes in tax law are hard to predict, a SLAT may be an effective wealth-transfer strategy to consider while the lifetime gift and estate exemption remains at historically high levels. An experienced estate planning attorney can help determine whether a SLAT makes sense for your personal circumstances and guide you through some of the more nuanced legal complexities.