Dynasty Trust Overview

What if a single dollar could pass to your kids, then your grandkids, then their kids, and never get hit with estate tax at any handoff? That’s the job of a dynasty trust. You use your generation-skipping transfer tax exemption once, on the way in, and the assets compound for descendants you’ll never meet, shielded from transfer tax at every death along the chain.

The tax it’s built to dodge

Normally, wealth gets taxed as it steps down each generation. You pay estate tax passing to your children, they pay again passing to their children, and so on. The government built a backstop called the generation-skipping transfer (GST) tax precisely to stop you from “skipping” a generation to avoid one of those layers.

A dynasty trust uses your GST exemption to neutralize that backstop. For 2026, the GST exemption is $15,000,000 per person, matching the federal estate and gift exemption, and the One Big Beautiful Bill Act made it permanent and indexed from 2027. Move assets into a properly structured dynasty trust and allocate your GST exemption to them, and those assets, plus all their future growth, stay outside the taxable estate of every generation that benefits.

Run the compounding and the number gets staggering. $15,000,000 left to grow across three or four generations, never pruned by a transfer tax at each death, can become an order of magnitude more than the same money passed down and taxed at every step. This is the clearest example I know of why people are bad at picturing exponential growth. The tax saved isn’t the gift. The gift is everything that money becomes once it’s allowed to compound untaxed for a century.

How long it can actually last

“Dynasty” isn’t marketing. Some states let these trusts run for centuries or with no end date at all, while others still cap trust duration. The trust’s lifespan depends entirely on the law of the state where you situate it, which is why people deliberately establish dynasty trusts in trust-friendly jurisdictions rather than wherever they happen to live.

The hidden price

Here’s what the brochures gloss over. A dynasty trust is irrevocable and, by design, built to outlive you by generations. You are giving up control of these assets, permanently, for the benefit of people who don’t exist yet.

That creates real second-order problems. You’re writing rules today for grandchildren whose lives, values, and needs you cannot predict. Lock the terms down too tight and you hand a future descendant a rigid structure that no longer fits their world. Leave it too loose and you lose the protection that justified the trust. Good drafting builds in flexibility, a trust protector who can adapt terms, sensible distribution standards, so the trust serves your heirs instead of ruling them from the grave.

And the threshold question still applies. With a $15M federal exemption per person, a dynasty trust earns its complexity for families whose wealth clearly clears that line and is expected to keep growing. For an estate comfortably under it, you may be giving up the step-up in basis and a lot of control to solve a tax you’ll never owe.

Is it for you

A dynasty trust fits when you have substantial wealth above the federal exemption, a genuine multigenerational intent, and the discipline to part with assets for good. Pair it with a grantor trust structure to let the assets grow even faster, and think hard about family governance, because money that lasts a century needs a family that knows how to steward it.

Get it right and you’re not just passing down money. You’re building a structure that protects and compounds your family’s wealth long after anyone remembers your name. That’s the rare estate decision that plays out over generations, so make it deliberately.