South Dakota abolished the Rule Against Perpetuities entirely, meaning a trust funded there today can legally hold assets for your great-great-great-grandchildren with no estate tax event along the way, provided GST exemption was properly allocated at the outset.
Generation-Skipping Trust
A generation-skipping trust (GST trust) is any trust structured to use a grantor's GST tax exemption, currently $13.61 million per person in 2024, to transfer assets to grandchildren or lower generations without triggering a 40% generation-skipping transfer tax at each generational level. The trust can be set up in any state and does not need to last more than one or two generations. Setup typically costs $5,000 to $15,000 in legal fees depending on complexity, and the trust must be properly allocated GST exemption at funding or the tax advantage evaporates. It fits families with estates above the federal exemption threshold who want to skip one or two generations cleanly without committing to a perpetual structure.
Dynasty Trust
A dynasty trust is built to last 100 to 1,000 years by exploiting the Rule Against Perpetuities abolition in states like South Dakota, Nevada, and Delaware. Assets inside the trust are never included in any beneficiary's taxable estate, so a single funding event, properly using GST exemption, can shelter wealth across unlimited generations. South Dakota is the dominant jurisdiction: no state income tax on trust income, strong asset protection statutes, and no limit on trust duration. Drafting and domicile work typically runs $15,000 to $40,000 upfront, plus $3,000 to $10,000 per year in ongoing trustee and administrative fees. This structure fits families with generational wealth above $5 million who want permanent removal from the estate tax system rather than a single-skip solution.
How the GST Exemption and Dynasty Trust Work Together
The practical power comes from combining both: fund a South Dakota dynasty trust with assets allocated against your full GST exemption, and those assets compound inside a trust that never pays estate tax again, regardless of how many generations benefit. Without GST exemption allocation, a dynasty trust still avoids probate and provides asset protection, but each generation's interest may be subject to estate inclusion. The GST exemption is the fuel; the dynasty trust is the engine that lets it run indefinitely instead of burning out after one or two generations. Families funding these structures often pair them with PPLI policies held inside the trust to add an income-tax-free compounding layer on top of the estate-tax elimination.
Choosing Between Them
If your estate is just above the federal exemption and your goal is to pass assets to grandchildren tax-efficiently one time, a standalone GST trust is simpler and cheaper. If the goal is permanent family wealth that compounds outside the estate tax system for multiple generations, a dynasty trust in South Dakota or Nevada is the correct tool, and it should be allocated GST exemption at funding to capture both benefits simultaneously. The two are not competing alternatives so much as a spectrum: every dynasty trust should be a GST trust, but not every GST trust needs to be a dynasty trust. The decision hinges on whether your planning horizon is one generational skip or indefinite perpetuation of family capital.
Things people ask first.
Can a dynasty trust also be a generation-skipping trust?
Yes, and it should be. A dynasty trust becomes a GST trust when the grantor allocates GST exemption to it at funding. Without that allocation, the trust still provides asset protection and avoids probate, but assets may be pulled into a beneficiary's taxable estate.
Which states are best for setting up a dynasty trust?
South Dakota is the most favored jurisdiction: no state income tax on undistributed trust income, no limit on trust duration, strong self-settled asset protection, and a well-developed trust industry. Nevada and Delaware are close alternatives, with Nevada offering particularly strong charging order protections.
What is the GST tax rate and who pays it?
The GST tax rate is a flat 40%, the same as the estate and gift tax rate. It applies when assets pass to a beneficiary two or more generations below the transferor, such as a grandchild, without using the grantor's available GST exemption.
How much do you need to fund a dynasty trust to make it worthwhile?
Most practitioners suggest a minimum of $1 million to $2 million to justify the setup and ongoing administrative costs, though the real leverage kicks in at $5 million or more where the estate tax exposure and compounding benefits are substantial enough to dwarf the fees.
Can a dynasty trust hold life insurance or PPLI?
Yes. An irrevocable life insurance trust structured as a dynasty trust can own a PPLI policy, combining income-tax-free growth inside the policy with estate-tax-free transfer across unlimited generations. This is one of the most efficient compounding structures available to high-net-worth families.
Does the GST exemption adjust for inflation?
It has been indexed for inflation in recent years, reaching $13.61 million per individual in 2024. However, without congressional action, the exemption is scheduled to revert to roughly $7 million per person after 2025, making near-term funding particularly valuable.
Ready to structure a dynasty trust that actually outlasts the estate tax?
The Offshore Playbook covers dynasty trust jurisdiction selection, GST exemption stacking, PPLI integration, and the exact steps to fund a structure that removes your family's capital from the estate tax system permanently.
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