Understanding SLANTs: An Estate-Planning Perspective

By: Randall A. Denha, J.D., LL.M.

I have written extensively about Spousal Lifetime Access Trusts (SLATs) and routinely implement them in my estate-planning practice. They remain one of the most reliable, flexible, and widely used tools for married couples who want to reduce future estate taxes while maintaining indirect family access to assets.

That said, the cornerstone of effective estate planning has never been about finding the perfect instrument, rather it’s about aligning structure with strategy. No single technique serves every client. Objectives differ, family dynamics evolve, and tax environments shift. That’s why it is increasingly important to understand not only how these traditional trusts work, but when subtle variations, such as the Spousal Lifetime Access Non-Grantor Trust, or “SLANT”, may better serve a family’s long-term goals.

A SLANT does not replace the SLAT. Instead, it extends the planning conversation beyond estate-tax minimization into the realms of income-tax efficiency, state-tax mitigation, and long-term governance.

The purpose of this discussion is to clarify when, and why, a SLANT may deserve a seat at the same table as its better-known counterpart.

The SLAT as the Starting Point

In most modern estate plans, the SLAT serves as the baseline or starting framework. Structurally, the concept is straightforward:

• One spouse makes a completed gift to an irrevocable trust.
• The other spouse (and often children) are named as beneficiaries.
• The gifted assets, along with all future appreciation, are excluded from the grantor’s taxable estate.
• The grantor retains indirect access through the beneficiary spouse.

In the vast majority of cases, the SLAT is drafted as a grantor trust for income-tax purposes. This means that the grantor, not the trust, pays the income tax on the trust’s earnings. Far from being a disadvantage, this design often enhances the plan’s effectiveness: by paying the income tax personally, the grantor allows the trust assets to grow unburdened and outside the estate and free of annual taxation at the trust level.

For many families, this “tax burn” feature is what makes the SLAT such a powerful and enduring tool.

Why Look Beyond a SLAT?

As clients’ wealth grows and their planning objectives become more complex, several strategic questions inevitably arise:

• Should trust income indefinitely increase the grantor’s personal tax burden?
• Does the family’s state of residence and potential state tax exposure materially affect outcomes?
• Would clear tax and legal separation between the grantor and the trust strengthen the long-term plan?
• Could future planning flexibility be limited if the trust remains a grantor trust?

When one or more of these questions move from the hypothetical to the practical, it’s often time to look beyond the traditional SLAT and consider whether a SLANT might better align with the client’s broader objectives.

What the SLANT Adds to the Conversation

A SLANT retains the same estate-tax benefits that make the SLAT so effective but diverges in one key area: income taxation. The defining characteristic of a SLANT is that it’s structured as a non-grantor trust. In practical terms, that means:

• The trust files its own federal and state income-tax returns.
• The trust pays its own income taxes.
• Income is not reported on the grantor’s personal return.

This may seem like a subtle change, but it carries meaningful consequences. The SLANT’s independent tax status creates a cleaner separation between the grantor and the trust, which can enhance both tax efficiency and protection.

This separation can be strategically valuable for purposes such as:

• State income-tax planning (e.g., establishing situs in a no-tax jurisdiction).
• Strengthening asset-protection postures.
• Clarifying legal independence for marital planning or business succession.
• Facilitating future trust-level tax strategies such as income sprinkling, charitable planning, or timing of distributions.

A SLANT allows you to permanently move assets out of your taxable estate while still preserving indirect access through your spouse. Unlike a traditional SLAT, it is taxed as a separate taxpayer, which can provide meaningful income- and state-tax planning advantages. Properly structured, the assets and all future appreciation remain outside both spouses’ estates, are protected from creditors, and can pass to children or future generations free of estate tax.

Estate-Planning Benefits in Practical Terms

For clients, the estate-planning advantages of a SLANT can often be summarized as follows:

1. Estate Tax Removal Remains Intact
   Just like a SLAT, all assets transferred to a SLANT are removed from the grantor’s taxable estate, along with future growth and appreciation.
2. Spousal Access Is Preserved, But Structured
   The spouse can still receive distributions, preserving indirect family access. However, distributions must be made by an independent trustee pursuant to an ascertainable standard as defined under IRC Sections 2041 and 2514 (such as health, education, maintenance, and support) to ensure the trust’s non-grantor status is not compromised and to avoid adverse estate tax inclusion under IRC Sections 2036-2038 or grantor trust status under IRC Sections 671-679. The trustee must exercise independent judgment and maintain proper documentation of all distribution decisions.
3. Clear Legal and Tax Separation
   Because the SLANT is its own taxpayer under IRC Section 641, it reinforces the long-term principle that these assets are not merely “set aside personal wealth,” but distinct family capital, governed by a separate entity. This separation must be strictly maintained through: (i) proper administration including separate bank accounts and tax identification numbers; (ii) independent trustee action with documented decision-making processes; (iii) arm’s-length transactions between the grantor and trust; (iv) compliance with all applicable trust terms and tax law requirements; and (v) review by qualified tax counsel to preserve the intended tax treatment. Failure to maintain this separation may result in the trust being treated as a grantor trust or cause estate tax inclusion.
4. Multi-Generational Planning Flexibility
   Following the beneficiary spouse’s lifetime, the trust can continue for future generations subject to applicable state law perpetuities rules, providing both asset protection and income-tax efficiency. The trust’s duration and structure must comply with the rule against perpetuities or perpetual trust statutes in the governing jurisdiction.

Why SLANTs Are Used Selectively

Despite their advantages, SLANTs are not universally superior. They are technical instruments that require disciplined implementation and sustained administration.

Some of the trade-offs include:

• Trust income reaches the highest federal income tax brackets much sooner than individual income (in 2026, trusts reach the highest bracket at approximately $16,000 of taxable income, compared to much higher thresholds for individuals). State income tax treatment varies by jurisdiction and should be analyzed separately.
• The administrative bar is higher and formal recordkeeping and trustee independence are critical.
• Failing to maintain the trust’s non-grantor integrity can undo the intended benefits.

For many families, these complexities are unnecessary. In those cases, a well-drafted SLAT remains the most appropriate and efficient tool.

But for others, particularly clients with substantial wealth, exposure to high-tax states, or long-term goals extending across generations, the SLANT’s added structural discipline may justify its use.

In practice, I frame the conversation this way:

• SLATs are foundational and broadly appropriate for most married couples undertaking estate-tax planning.
• SLANTs are situational and strategic and best reserved for clients whose planning goals extend into multi-jurisdictional income-tax optimization, family governance, or dynasty-style structuring.

The relevant question is not, “Should I do a SLANT instead of a SLAT?” It’s, “Do my long-term objectives and risk profile justify the additional complexity a SLANT introduces?”

When the answer is yes, the outcome can be powerful allowing clients to integrate estate, income, and jurisdictional tax strategies in one unified design.

SLATs remain a cornerstone of modern estate planning and a proven design with decades of successful implementation. The SLANT doesn’t seek to unseat that cornerstone; it builds upon it.

The hallmark of great planning is not sophistication for its own sake. It’s clarity of purpose and choosing the least complicated structure that effectively achieves the client’s goals. When used thoughtfully, a SLANT can represent the next logical evolution in spousal access trust design: a way to preserve flexibility, minimize taxes, and reinforce long-term stewardship of family wealth across generations.