When the One Big Beautiful Bill Act was signed into law on July 4, 2025, a lot of successful couples exhaled.
The federal estate tax exemption was made permanent at $15 million per person — $30 million for a married couple, inflation-adjusted going forward. The sunset that had kept estate planning attorneys busy for years was dead. No more artificial deadline. No more scrambling to make large gifts before December 31st.
For a lot of people, that felt like the problem was solved.
It wasn’t.
If you and your spouse have built a $10 million, $12 million, or $15 million estate through a business, a medical practice, real estate, or three decades of disciplined investing — and you looked at that $30 million threshold and thought we’re fine — I want to walk you through exactly what the OBBBA didn’t fix. Because there’s one gap the bill left completely untouched, and it’s the one most likely to cost your family millions.
What the OBBBA Actually Did
The OBBBA made the elevated exemption permanent and increased it slightly — $15 million per individual starting in 2026, indexed for inflation annually. It removed the threat of the exemption reverting to roughly $7 million that had loomed over planning conversations since 2017.
What it did not change is the portability rules under IRC §2010(c). Specifically, it did not fix how the generation-skipping transfer tax exemption works between spouses.
That distinction matters more than most people realize.
The Problem the OBBBA Left Untouched
Most people know that when one spouse dies, the surviving spouse can inherit the deceased spouse’s unused estate tax exemption. That’s portability — the DSUE, or Deceased Spousal Unused Exclusion. It’s been the law since 2010 and it survived the OBBBA unchanged.
What most people don’t know — and what most CPAs miss — is that GST exemption portability does not exist.
The generation-skipping transfer tax is the 40% federal tax that applies when wealth passes not just to your children but to your grandchildren or beyond. Congress created the GST exemption to allow a meaningful amount of wealth to transfer across multiple generations without triggering that 40% hit at every level.
Each spouse has their own GST exemption — $15 million each, $30 million combined under current law. And when one spouse dies without having allocated their GST exemption into a properly structured dynasty trust, that exemption disappears. Permanently. It does not carry over to the surviving spouse. It does not get absorbed into the DSUE calculation. It is simply gone — and no amount of planning after the fact can bring it back.
The OBBBA made this problem more invisible, not less. A higher exemption amount makes couples feel safer. It doesn’t change the underlying mechanics.
The $12 Million Couple Who Thinks They’re Fine
Let me make this concrete.
Consider a married couple — a successful physician or business owner, 72 years old, with a wife who is eight years younger at 64. Together they’ve built a $12 million estate. Real estate, investment accounts, practice equity, retirement assets. By any measure, they’ve done everything right.
They look at the $30 million combined threshold and conclude the dynasty planning conversation isn’t for them. That’s a reasonable instinct. It’s also wrong — not because of where they are today, but because of where they’ll be.
At a conservative 6% annual growth rate, that $12 million estate reaches $25.6 million in 13 years.
Now add the survivorship reality. A healthy 72-year-old man today has a statistical life expectancy of 84 to 87. If he dies at 85 — a reasonable midpoint — his wife is 77. Women at 77 have a life expectancy of another 12 to 14 years. She realistically survives to 89 or 90.
That means the estate continues to grow inside her taxable estate for over a decade after he’s gone.
At his death, the estate is $25.6 million. She continues growing that estate at 6%. By the time she passes — 13 years later — the estate has reached $51.5 million.
Here is where the GST portability gap becomes a real dollar figure.
If her husband never allocated his $15 million GST exemption into a dynasty structure before he died, it’s gone. She has only her own $15 million exemption remaining. On a $51.5 million estate, that leaves $36.5 million exposed to a 40% generation-skipping tax at her death.
That’s $14.6 million transferred to the IRS instead of their children and grandchildren.
All of it preventable. None of it recoverable once he’s gone.
Why the Dynasty Bridge Trust Addresses This Directly
The Dynasty Bridge Trust is specifically designed for this scenario — not just the ultra-wealthy with $50 million estates, but the successful couple who has built real wealth and is approaching the threshold with decades of appreciation still ahead.
The structure allocates both GST exemptions while both spouses are living — at today’s asset values, before the appreciation occurs. Once the exemption is allocated and the assets are inside the trust, all future growth compounds outside the taxable estate. The 40% hit on that growth never happens. The wealth transfers to the next generation intact.
Beyond the GST mechanics, the Dynasty Bridge Trust layers in offshore creditor protection through a Cook Islands jurisdiction trust — the most litigation-tested asset protection structure in U.S. case law. It also incorporates the AMLP structure for real estate and business interests, providing charging order protection at the entity level.
For a couple with rental properties in multiple states, a business or practice with exposure, and no trust in place, the structure solves three problems simultaneously: probate, protection, and generational tax efficiency.
A basic revocable trust solves only probate. It leaves the GST exemption gap open. It leaves the creditor exposure open. And it doesn’t do anything about the $14.6 million that disappears when the second spouse dies without a dynasty structure in place.
The Window That Closes When the First Spouse Dies
This is the part of the conversation that creates urgency — not artificially, but mechanically.
Once the first spouse dies, half the combined GST exemption is gone if it hasn’t been allocated. There is no corrective action after the fact. No amended return. No planning technique that recreates the exemption the surviving spouse lost.
The couple with $12 million today, growing at 6%, with an eight-year age gap between them, is operating on a clock they may not realize is running. Every year of delay is another year of appreciation compounding inside the estate instead of outside it — and another year closer to the moment when half the planning opportunity permanently closes.
The OBBBA removed one deadline. It did not remove this one.
What This Means for You
If you and your spouse have built an estate between $8 million and $30 million, the threshold question is the wrong question. The right question is what your estate looks like in 15 years — and how much of that wealth survives to your children and grandchildren if you do nothing before the first spouse dies.
The answer, for most couples in this range, is that the cost of inaction is measured in seven figures. Not in theory. In the actual dollars that transfer to the IRS at 40% on the back end of a problem that was completely solvable on the front end.
Structure before stress.
For a confidential legal consultation with an Asset Protection Attorney, contact Bradley Legal Corp. at (888) 773-9399
By: Brian T. Bradley, Esq. – National Asset Protection Attorney
