If your estate is large enough to face federal estate taxes, the current planning environment offers meaningful opportunity. As part of the OBBA, for 2026, the federal gift and estate tax exemption is $15 million per individual. A married couple can collectively shield up to $30 million from estate taxes.
For couples whose estates exceed those thresholds, the question is straightforward: How do you move assets out of a taxable estate without losing access to them entirely?
The Spousal Lifetime Access Trust, commonly known as a SLAT, offers a practical answer. When designed correctly, it removes assets from your taxable estate while preserving your household’s indirect access to that wealth through your spouse.
At HBKS Wealth Advisors, we work alongside our colleagues at HBK CPAs & Consultants to help clients evaluate strategies like this in the context of their full financial picture. That integrated approach matters here, because SLATs sit at the intersection of estate planning, income tax strategy, and long-term financial security.
What Is a SLAT?
A SLAT is an irrevocable trust that one spouse creates for the primary benefit of the other spouse. The donor spouse makes a gift to the trust, using some or all of their available gift and estate tax exemption. Those assets then grow outside the donor’s taxable estate.
The key design feature: the beneficiary spouse retains access to trust income and principal. So while the assets are legally removed from the donor’s estate, the household still has a path to those funds.
There are important limits to understand. Because the trust is irrevocable, the donor spouse cannot directly benefit from it. And because indirect access flows through the beneficiary spouse, the strategy depends on the stability and continuity of the marriage. If the beneficiary spouse dies, the donor’s indirect access ends.
The Income Tax Advantage: Why IDGT Status Matters
Most SLATs are structured as Intentionally Defective Grantor Trusts, or IDGTs. This is not a flaw in the design. It is a deliberate feature.
An IDGT is irrevocable and removed from the donor’s estate for estate tax purposes. But for income tax purposes, the IRS treats it as if the donor still owns it. That distinction creates several meaningful advantages.
The trust assets grow on a pre-tax basis. When the don or pays the income taxes on trust earnings out of personal assets, those tax payments are effectively an additional tax-free gift to the trust. The trust is not depleted by income taxes, and the donor’s taxable estate is reduced by each payment.
Transactions between the donor and the trust are income-tax neutral. Because the IRS treats the donor as the owner for income tax purposes, selling an asset to the trust or swapping assets between personal accounts and the trust does not trigger capital gains. This opens planning opportunities that would otherwise be expensive.
The trust can hold S corporation stock. Grantor trusts qualify as S corporation shareholders, which is an important consideration for business owners.
Life insurance transfers are simplified. Moving an existing policy into the trust is not treated as a transfer for value, preserving the income-tax-free treatment of the death benefit.
Key Design Considerations Before Funding a SLAT
SLATs are flexible, but they require careful structuring. Several factors deserve attention before funding.
Retain sufficient assets outside the trust. Each spouse should maintain independent financial resources. If the beneficiary spouse passes away unexpectedly, the donor’s indirect access to the trust ends. Planning ahead for that scenario protects both spouses.
Avoid the Reciprocal Trust Doctrine. Many couples consider creating two SLATs simultaneously, with each spouse funding a trust for the benefit of the other. The IRS has established what is known as the Reciprocal Trust Doctrine, which allows it to effectively disregard both trusts if they are too similar. The practical result would be treating the assets as if they were never transferred.
To avoid this outcome:
- Make the trusts materially different in structure and terms
- Stagger the creation of each trust over time
- Use different trustees
- Vary distribution standards, beneficiary designations, and powers of appointment
A side-by-side structure can still work, but only with meaningful differences in each trust’s provisions.
Distribution standards shape flexibility. Some SLATs limit distributions to health, education, maintenance, and support (HEMS). Others give the trustee broader discretion. The right approach depends on the beneficiary’s anticipated needs and the family’s overall liquidity.
How GRATs and BDITs Fit Into the Picture
While SLATs are the primary tool for married couples, two other structures are worth understanding in context.
Grantor Retained Annuity Trusts (GRATs) work differently. The donor contributes property to a trust and receives annual payments back over a fixed term. At the end of the term, any remaining value passes to beneficiaries free of gift and estate tax. The strategy works best when assets are expected to appreciate significantly, because only the growth above the IRS-assumed rate of return passes tax-free.
GRATs are particularly effective for investment portfolios and business interests. A $20 million contribution growing at 10% annually over a five-year term could pass more than $4 million to the next generation with a taxable gift of less than $5,000.
Beneficiary Defective Inherited Trusts (BDITs) serve a different purpose. They allow a third party, often a parent, to create and fund a trust for a beneficiary such as an adult child. When structured correctly, the beneficiary is treated as the owner for income tax purposes, creating tax-efficient opportunities for the beneficiary to transact with the trust. BDITs can be useful for transferring wealth to the next generation while maintaining asset protection.
Why Coordination Matters
The decisions involved in trust-based planning, including how much to transfer, which assets to use, how to structure the trusts, and how to coordinate with your overall financial plan, require input across estate planning, income tax, investment management, and business valuation. That is precisely where an integrated advisory relationship provides the most value.
HBKS Wealth Advisors works in close collaboration with HBK CPAs & Consultants to bring that coordination to clients who need it most.
Taking the Next Step
If your estate exceeds the current exemption thresholds, a conversation about trust-based planning strategies is worth having. Schedule a consultation to discuss whether a SLAT or related strategy belongs in your estate plan.
Frequently Asked Questions
Q: What happens to a SLAT if my spouse passes away? When the beneficiary spouse dies, the donor spouse’s indirect access to trust assets ends. The trust continues for any remaining beneficiaries, such as children, but the donor can no longer benefit from distributions. This is why maintaining independent financial assets outside the trust is an important part of SLAT planning.
Q: Can both spouses create a SLAT for each other at the same time? Yes, but the trusts must be meaningfully different to avoid the Reciprocal Trust Doctrine. If the IRS determines the trusts are essentially mirror images, it may disregard them entirely. Working with experienced legal and tax counsel to differentiate the structures is essential.
Q: Does funding a SLAT use up my gift and estate tax exemption? Yes. Assets transferred to a SLAT are a taxable gift, and the value applies against your available lifetime exemption. The strategy is most effective when transferred assets are expected to appreciate over time, allowing future growth to occur outside the taxable estate.
Q: What types of assets can be transferred into a SLAT? SLATs can hold a wide range of assets, including business interests, investment portfolios, and real estate. Business interests in closely held companies often benefit from valuation discounts when transferred as minority interests, which can increase the leverage of the gift.
Q: How is a SLAT different from simply giving assets to my spouse? An outright gift to your spouse qualifies for the unlimited marital deduction, meaning no gift tax applies, but the assets remain in the surviving spouse’s taxable estate. A SLAT removes the assets from both spouses’ estates while still allowing the beneficiary spouse to access them, which is a meaningful structural difference for estate tax planning purposes.
Important Disclosure:
The information included in this document is for general, informational purposes only. It does not contain any investment advice and does not address any individual facts and circumstances. As such, it cannot be relied on as providing any investment advice. If you would like investment advice regarding your specific facts and circumstances, please contact a qualified financial advisor.
HBKS Wealth Advisors is not a legal or accounting firm, and does not render legal, accounting or tax advice. You should contact an attorney or CPA if you wish to receive legal, accounting or tax advice.
The historical and current information as to rules, laws, guidelines, or benefits contained in this document is a summary of information obtained from or prepared by other sources. It has not been independently verified but was obtained from sources believed to be reliable. HBKS Wealth Advisors does not guarantee the accuracy of this information and does not assume liability for any errors in information obtained from or prepared by these other sources.
Investment Advisory Services offered through HBK Sorce Advisory LLC, d.b.a. HBKS Wealth Advisors. Not FDIC Insured – Not Bank Guaranteed – May Lose Value, Including Loss of Principal – Not Insured By Any State or Federal Agency.
