Dynasty Trust
A Dynasty Trust is an irrevocable trust designed to last for multiple generations — potentially in perpetuity in states that have abolished the Rule Against Perpetuities — funded with generation-skipping transfer tax exemption to allow family wealth to compound and pass to descendants indefinitely without being subjected to estate tax at each generational succession.
The Dynasty Trust represents the apex of multi-generational estate planning. By combining the GST tax exemption, state law favorable to perpetual trusts, and the power of compound growth, a Dynasty Trust can theoretically shelter family wealth from transfer taxes indefinitely. The compounding mathematics are striking: $13.99 million transferred in trust today, growing at 6% annually over 100 years, would grow to approximately $2.7 billion — all potentially estate-tax-free at each generational crossing if the trust is properly structured and funded with a fully exempt GST allocation.
Historically, the common law Rule Against Perpetuities (RAP) prohibited trusts from lasting longer than a life in being plus 21 years, limiting dynasty trust planning. Beginning in the 1990s, Delaware and South Dakota pioneered the abolition of the RAP for interests in trust, allowing truly perpetual trusts. Today, more than 20 states permit trusts to last indefinitely, creating a competitive market among states for trust-situs business. Alaska, Delaware, Nevada, New Hampshire, and South Dakota are among the most popular trust-friendly jurisdictions, offering not only perpetual trust duration but also favorable asset protection, directed trust statutes, and state income tax exemptions.
Siting the dynasty trust in a favorable state requires the trust to have some nexus to that state — typically through the appointment of a resident trustee, a directed trust structure, or an institutional trust company operating in that state. Directed trust statutes in Delaware and South Dakota allow the grantor to separate investment management from distribution decisions, permitting the appointment of an independent investment adviser and a distribution trustee with different expertise.
Distribution standards in dynasty trusts are designed to preserve assets for future generations while providing meaningful benefit to current beneficiaries. Common approaches include discretionary distributions for health, education, maintenance, and support (the HEMS standard), mandatory income distributions with principal preserved for accumulation, and tiered distribution schedules that increase access as beneficiaries mature. Giving current beneficiaries broad discretionary power over trust assets — especially general powers of appointment — risks estate tax inclusion in the current beneficiary's estate, defeating the dynasty planning.
GST tax exemption allocation is essential. Without proper exemption allocation (via election on gift tax returns or at death), the trust will have a GST inclusion ratio greater than zero, meaning distributions to skip persons will be subject to GST tax. Once the trust is funded and GST exemption is allocated to make it fully exempt, subsequent growth within the trust does not require additional exemption allocation — the entire trust value is permanently shielded regardless of appreciation.