Preparing for the Sunset of Tax Cuts: Will Your Estate Plan Survive

Your estate plan may face higher taxes and reduced exemptions once the estate tax sunset takes effect in 2026, unless you take strategic action now. The expiration of the Tax Cuts and Jobs Act (TCJA) provisions could dramatically reduce the federal estate tax exemption and reshape how you protect generational wealth.

This article equips you with the facts, strategies, and timelines needed to prepare. You’ll learn what the sunset means for your estate, how to preserve exemptions, and which trust and gifting tools can help safeguard assets.

What Happens to the Federal Estate Tax Exemption in 2026?

The Tax Cuts and Jobs Act of 2017 doubled the estate and gift tax exemption from approximately $5.49 million per individual to $11.18 million, indexed annually for inflation. In 2024, the exemption reached $13.61 million per person (or $27.22 million for married couples). However, these benefits are temporary. On January 1, 2026, the exemption is set to revert to roughly half—about $7 million per person—unless Congress acts to extend the current levels.

That means any estate valued above this threshold could face a federal estate tax rate of up to 40%. Even individuals who never expected to owe estate taxes might suddenly find their wealth exposed. Assets like real estate, retirement accounts, and closely held businesses can push estate values beyond the new limits quickly.

If you currently have an estate nearing or exceeding $7 million, you must use the higher exemption before it disappears. The Internal Revenue Service has confirmed that gifts made under the current exemption will not be “clawed back” once the limit drops, so using it now is a strategic opportunity that expires with the sunset.

How Will the End of the TCJA Affect Your Estate Plan?

When the TCJA sunsets, your existing estate plan could lose effectiveness. Many wills and trusts written since 2018 rely on the doubled exemption and may not reflect post-2025 realities. The reduced thresholds could push estates that were once exempt into taxable territory.

A plan built for a $13 million exemption may create unexpected problems under a $7 million cap. For example, credit shelter trusts and marital deduction formulas might unintentionally overfund one spouse’s trust, triggering unnecessary taxation. Reviewing those formulas now is critical.

In practice, you should conduct a scenario analysis with your estate attorney and financial advisor. Model what your estate looks like under both current and post-sunset exemption levels. The results often reveal a need for recalibration—especially for families with substantial real estate holdings, business interests, or investments that appreciate rapidly.

Should You Accelerate Gifting Before the Law Changes?

Yes. Accelerating lifetime gifts before the sunset can help you lock in the current exemption and remove future appreciation from your taxable estate. The key advantage lies in acting while the exemption is still historically high.

By transferring assets now—through outright gifts, trusts, or family partnerships—you ensure that the transferred value (and any future growth) escapes estate taxation. For example, a $10 million gift made today under the 2024 exemption rules will not be affected if the exemption drops in 2026. The IRS confirmed that there will be no retroactive taxation on previously used exemptions.

Common strategies for high-net-worth families include:

• Spousal Lifetime Access Trusts (SLATs): Allow one spouse to gift assets to a trust for the other, maintaining indirect access while removing the assets from the estate.
• Grantor Retained Annuity Trusts (GRATs): Transfer future appreciation with minimal gift tax impact.
• Irrevocable Life Insurance Trusts (ILITs): Remove life insurance proceeds from taxable estates.

You should weigh liquidity needs and cash flow before large gifts, but even partial use of the current exemption can yield meaningful savings. The difference between acting now and waiting could mean millions in estate taxes.

Which Trust Strategies Need Revisiting Under a Lower Exemption?

Many estate planners are revisiting trust structures that were designed under the higher TCJA limits. Once the exemption is reduced, trusts must be optimized for flexibility and tax efficiency.

Irrevocable trusts created today can take advantage of “decanting” or modification provisions that allow future adjustments without court involvement. Including these provisions ensures adaptability if Congress extends, reduces, or reforms the tax code again.

You should focus on trusts that preserve control while maximizing transfer efficiency:

• Dynasty Trusts: Shield multigenerational wealth from repeated taxation.
• Qualified Personal Residence Trusts (QPRTs): Transfer home ownership at discounted values while retaining occupancy.
• Grantor Trusts: Let you pay income tax on trust earnings, allowing assets to grow faster for beneficiaries.

By building flexibility into your trust language—such as powers of appointment or trustee adjustment clauses—you maintain control in an uncertain tax environment.

When Should You Update Your Estate Plan Relative to the Tax Change?

The deadline is closer than it appears. The current estate tax provisions expire at the end of 2025, but effective planning requires time for valuation, documentation, and execution. Most experienced estate attorneys recommend completing major transfers by the third quarter of 2025 to avoid year-end congestion and valuation disputes.

Break your review into stages:

1. Immediate Review (2024): Audit current documents and model tax exposure under the lower exemption.
2. Mid-2025 Execution: Implement gifting strategies and establish or modify trusts.
3. Late-2025 Verification: Finalize filings, valuations, and funding transfers before the December 31 deadline.

Tax planning is most effective when coordinated with legal and financial professionals early. Waiting until the last quarter of 2025 could result in rushed or incomplete transfers, potentially exposing your estate to preventable taxes.

What Are the Benefits of Locking in Current Tax Thresholds?

Using today’s higher exemption provides multiple long-term advantages. You minimize future estate tax exposure, transfer more wealth tax-free, and maintain predictability in your plan. Acting early gives you time to execute with precision rather than urgency.

Benefits include:

• Tax Savings: Up to $6 million per individual in additional sheltered wealth compared to post-2025 levels.
• Appreciation Protection: Future growth on gifted assets remains outside your taxable estate.
• Control: Trusts and gifting structures allow you to dictate how transferred assets are used, ensuring alignment with your long-term goals.

You also gain peace of mind knowing your estate will remain compliant and efficient regardless of congressional decisions. Whether or not the sunset proceeds, you’ll have positioned your plan to handle both scenarios effectively.

What Risks Do You Face If You Ignore the Upcoming Tax Change?

The primary risk is exposure to unexpected estate taxes that reduce your heirs’ inheritance. If your estate exceeds the new 2026 exemption, up to 40% of the excess value could be taxed.

For example, an $11 million estate post-sunset could face taxes on $4 million of value—resulting in a $1.6 million liability. Additionally, outdated estate documents could lead to misallocated assets or unintended tax burdens.

Delaying planning may also force you to make last-minute decisions in late 2025 when professional demand surges. Many top estate attorneys anticipate scheduling backlogs, increasing the risk of incomplete or rushed filings. Proactive planning now ensures accuracy and access to qualified advisors.

How Should You Prepare for the Estate Tax Sunset?

• Use current higher exemptions through lifetime gifting.
• Review and revise trusts.
• Complete asset transfers and valuations early.
• Consult professionals to project post-sunset estate exposure.

Take Control Before the Sunset

You have a brief window to secure one of the most generous estate tax environments in history. By acting before 2026, you preserve exemptions, control outcomes, and protect wealth for future generations. The sooner you start, the more options and leverage you’ll have when the exemption cuts in half.