Dynasty Trust Tax Planning: 7 Long-Term Strategies for 2026

I’m sitting here looking at my 2025 tax projection, and the number that keeps jumping out is $13.61 million. That’s the federal estate tax exemption per person as I write this. But I already know that by the time I file my 2026 return, that number is scheduled to shrink by roughly half—down to around $7 million. That drop isn’t a rumor; it’s baked into the Tax Cuts and Jobs Act sunset. If you have any assets you’d like to pass down to grandchildren or great-grandchildren without the IRS taking a cut, a dynasty trust is the tool that lets you lock in today’s exemption before it vanishes. Here are seven strategies I’ve used and seen work for real families, updated for what 2026 means.

Why 2026 Changes the Game for Dynasty Trust Planning

Let me give you the hard truth first: the Tax Cuts and Jobs Act of 2017 doubled the estate tax exemption, but that provision is set to expire on December 31, 2025. Starting January 1, 2026, the exemption reverts to pre-2018 levels, adjusted for inflation. That means roughly from $13.61 million per person to about $7 million. For a married couple, the combined exemption drops from over $27 million to around $14 million. If you’re sitting on a sizable estate, you could lose the ability to shield millions from estate tax just by waiting too long.

A dynasty trust isn’t just a will or a basic trust—it’s designed to last for generations, often for centuries, skipping estate taxes at each generation. The key is that assets placed inside a properly structured dynasty trust are removed from your estate for tax purposes, and they don’t get taxed again when your children die, or your grandchildren. But the window to fund it with today’s high exemption is closing fast. Every month you delay is a month of potential appreciation that could push your estate over the future lower threshold.

I’ve worked with families who thought they had “plenty of time” and then watched a business sale or real estate appreciation blow past the exemption. Trust me, the 2026 deadline is real. The IRS has already issued guidance confirming the scheduled drop. If you want to pass wealth to future generations without a 40% estate tax bite, now is the moment to act.

Strategy #1 – Lock in the Current Lifetime Exemption Before It Drops

This is the most straightforward play, and the one I personally helped a client execute last year. In 2025, I sat with a couple in their late 60s who owned a portfolio of rental properties worth about $10 million. Their estate was under the current exemption, but they had two children and four grandchildren they wanted to benefit. We set up a dynasty trust and they made a $10 million gift into it, using their combined exemption. That gift is now out of their estate. Even if the exemption drops to $7 million in 2026, that $10 million is already protected. And because the trust is a dynasty, when their children inherit, no estate tax will be due on those assets again.

The trick here is to use your lifetime gift tax exemption before the sunset. You can gift up to the current exemption amount—$13.61 million per person in 2025—without paying a dime of gift tax. But if you wait until 2026, you’ll only be able to gift roughly $7 million tax-free. For married couples, you can double that through portability or split gifts, but the math is the same: you lose about $6 million of tax-free transfer capacity per person.

One nuance: you need to file a gift tax return (Form 709) to report the gift and allocate your exemption. And you want to ensure the dynasty trust is drafted to qualify for the GST exemption (more on that next). If you have assets that are likely to appreciate—like a business, real estate, or a concentrated stock position—gifting them now means future growth happens outside your estate, all tax-free for generations.

Strategy #2 – Structure for GST Tax Exemption and Perpetual Wealth Transfer

Here’s where many do-it-yourself trust plans fall apart. The Generation-Skipping Transfer (GST) tax is a separate 40% tax that applies when assets skip a generation—say, from you directly to your grandchildren. If you fund a dynasty trust without allocating your GST exemption, the trust will have a “GST inclusion ratio” that could trigger tax when distributions are made to skip persons.

I once reviewed a trust for a family where the grantor had gifted $5 million but forgot to allocate GST exemption. The trust was technically a dynasty, but distributions to grandchildren would have been hit with a 40% GST tax on top of any income tax. We had to decant the trust (more on that in strategy #7) to fix it, but it cost time and legal fees. The lesson: always allocate your GST exemption to the dynasty trust at the time of funding.

You get a $13.61 million GST exemption per person in 2025 (same as the estate tax exemption). By allocating it to the dynasty trust, you ensure that every dollar in the trust can pass to grandchildren and beyond without a separate GST tax. The trust can last for generations—in states like South Dakota, Delaware, or Alaska, there’s no rule against perpetuities, so the trust can exist forever.

Strategy #3 – Use a Grantor Trust to Supercharge Growth Tax-Free

This is my favorite strategy because it feels almost like a loophole. An Intentionally Defective Grantor Trust (IDGT) is a dynasty trust that’s structured so that the grantor—you—pays the income taxes on the trust’s earnings. The trust itself pays no income tax. Why would you want that? Because every dollar you pay in taxes on the trust’s behalf is effectively an additional tax-free gift to the beneficiaries.

Let me give you a concrete example. I set up an IDGT for a client who owned a $2 million commercial property. The property generated $100,000 in annual net income. The trust paid no tax; my client paid the tax out of his personal funds (roughly $25,000). Over ten years, that’s $250,000 he paid in taxes that never touched the trust—allowing the trust assets to grow by that full amount. And because the trust is a dynasty, his grandchildren will benefit from that growth.

You can also do an installment sale to a dynasty trust. You sell an asset (say, a business interest) to the trust in exchange for a promissory note. The trust pays you interest (which you report as income), but the asset’s appreciation above the interest rate passes to beneficiaries tax-free. With interest rates still relatively low compared to historical averages, this is a powerful way to move wealth out of your estate without using up exemption.

Strategy #4 – Diversify with Life Insurance Inside the Dynasty Trust

Life insurance is one of the most common assets inside a dynasty trust, and for good reason. If you set up the trust as an Irrevocable Life Insurance Trust (ILIT), the trust owns the policy, and you make annual gifts to the trust to pay premiums. When you die, the death benefit pays out to the trust, completely free of estate tax. The trustee then manages the proceeds for your children and grandchildren, all within the dynasty trust structure.

I have a client who bought a $5 million universal life policy inside a dynasty trust. His annual premiums are about $30,000, which he gifts to the trust using his annual gift tax exclusion ($18,000 per beneficiary in 2025). After he passes, the $5 million goes to the trust, not his estate. His children can access income from the trust, and when they die, the principal passes to their children without any estate or GST tax. It’s a clean, predictable way to create multi-generational wealth.

The key is to make sure the policy is owned by the trust from day one. If you buy it personally and then transfer it, you might trigger the “three-year rule” that pulls the death benefit back into your estate. Work with an estate attorney who specializes in ILITs to avoid that trap.

Strategy #5 – Invest in Pass-Through Entities for State Tax Advantages

Where you locate your dynasty trust matters—a lot. If you live in a state with high income tax (like California or New York), but you set up the trust in a state with no income tax (like South Dakota, Nevada, or Delaware), the trust’s investment income may be free of state income tax. This is especially valuable if the trust holds pass-through entities like LLCs or S-corporations, which throw off taxable income.

I once helped a family move a dynasty trust from California to South Dakota. The trust owned a portfolio of rental properties generating $200,000 in annual income. In California, that would have cost roughly $24,000 in state income tax each year. In South Dakota, the tax was zero. Over a 20-year period, that’s nearly $500,000 saved—money that stays in the trust for future generations.

You also want a state that has abolished the rule against perpetuities, so the trust can last indefinitely. South Dakota, Delaware, Alaska, and Florida are popular choices. Your trustee should have a physical presence in that state, so choose a corporate trustee or a trust company with a local office.

Strategy #6 – Coordinate with Charitable Remainder Trusts (CRAT/CRUT)

If you’re charitably inclined, pairing a dynasty trust with a Charitable Remainder Trust (CRAT or CRUT) can be a powerful one-two punch. Here’s how it works: you transfer highly appreciated assets (like stock or real estate) to a CRAT. The CRAT sells the assets tax-free, then pays you an income stream for life or a term of years. At the end of the term, the remaining assets pass into your dynasty trust, free of capital gains and estate tax.

I did this for a client who owned $1 million of Apple stock with a cost basis of $200,000. If he sold it directly, he’d owe about $200,000 in capital gains tax. Instead, he put it in a CRAT. The CRAT sold the stock tax-free, invested the proceeds, and now pays him $50,000 a year for 20 years. At the end of the term, roughly $1.5 million (assuming moderate growth) will flow into his dynasty trust for his grandchildren. No capital gains, no estate tax, and he gets a charitable deduction for the present value of the remainder interest.

The trick is to coordinate the timing so the dynasty trust is the remainder beneficiary, and to ensure the trust is drafted to accept the assets without triggering a GST tax. A good estate planning attorney can help you structure this.

Strategy #7 – Review Trust Situs and Decanting for Flexibility

No plan survives contact with the IRS unchanged. That’s why you need to build flexibility into your dynasty trust. One of the most useful tools is trust decanting—where the trustee “pours” assets from an existing trust into a new trust with updated terms, without triggering a taxable event. This is legal in many states, but the rules vary.

I’ve used decanting to fix trusts that had outdated distribution provisions, to change trustees, or to adapt to new tax laws. For example, if Congress ever changes the GST exemption or adds a wealth tax, a decanting can move assets to a more favorable jurisdiction or adjust the trust’s terms. But you need to choose a trust situs that allows decanting. South Dakota, Delaware, and New Hampshire are decanting-friendly.

Another reason to review situs: state income tax. If you move to a low-tax state, you might want to relocate the trust’s administration there. But if the trust is already established in a high-tax state, decanting can help you move it without triggering a taxable distribution.

My advice: review your dynasty trust at least every three years, or whenever there’s a major tax law change. The 2026 sunset is a good trigger to revisit your plan.

Final Takeaway

2026 is coming fast, and the estate and gift tax exemption is about to be cut in half. A dynasty trust, combined with the strategies above, lets you lock in today’s high exemption, avoid future estate and GST taxes, and build wealth that can last for generations. The key is to act now—gift assets before the drop, allocate your GST exemption, use a grantor trust structure, and choose a favorable situs. Worth bookmarking this article before your next meeting with your estate attorney—it’s a checklist you’ll want to keep handy.