Whether a special needs trust is revocable or irrevocable depends on whose money funds it. A first-party trust, holding assets that already belong to the person with a disability, must be irrevocable under federal law. A third-party trust, funded by a parent, grandparent, or anyone else, can be written either way, and the family gets to choose based on how much control the grantor wants to keep.
Why the Choice Affects Benefits at All
A special needs trust exists to hold money for someone with a disability without knocking them off Supplemental Security Income or Medicaid. SSI caps an individual’s countable resources at $2,000, and Medicaid eligibility for people with disabilities generally follows the same financial rules.1Social Security Administration. Supplemental Security Income – Who Can Get SSI2Medicaid.gov. Eligibility Policy A trust that pushes the beneficiary past that threshold wipes out the benefits they rely on.
Social Security treats a revocable trust as belonging to whoever has the power to revoke it. If the beneficiary can revoke the trust or demand its assets, the entire balance counts against the $2,000 limit.3Social Security Administration. SI 01120.201 – Trusts Established With the Assets of an Individual on or After January 1, 2000 Making the trust irrevocable, and keeping the beneficiary from controlling it, is what puts the money outside the resource count. That single structural choice is what keeps benefits intact.
First-Party Trusts Must Be Irrevocable
A first-party special needs trust holds the beneficiary’s own money, which usually arrives through a personal injury settlement, a direct inheritance, or a lump-sum Social Security back payment. Federal law allows those assets to be sheltered in a trust without costing the beneficiary Medicaid, but only if the trust meets strict conditions.4Office of the Law Revision Counsel. 42 US Code 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
To qualify, the trust must be:
- Irrevocable. The beneficiary cannot undo it or cash it out.
- Created while the beneficiary is under 65. The trust continues to work after they turn 65, but no new first-party trust can be set up past that age.5Social Security Administration. SI 01120.203 – Exceptions to Counting Trusts Established on or After January 1, 2000
- Established by the individual, a parent, a grandparent, a legal guardian, or a court.4Office of the Law Revision Counsel. 42 US Code 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
- For the sole benefit of the beneficiary. Every dollar spent during their lifetime must go to them; payments to others disqualify the trust.5Social Security Administration. SI 01120.203 – Exceptions to Counting Trusts Established on or After January 1, 2000
- Subject to Medicaid payback. When the beneficiary dies, remaining funds must first reimburse the state Medicaid agency for every dollar it spent on the beneficiary’s care before anything passes to other heirs.4Office of the Law Revision Counsel. 42 US Code 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
The payback is the price of the shelter. Medicaid keeps paying for care now and collects later, and in practice the reimbursement can consume most or all of what is left in the trust, depending on how much care the state provided over a lifetime. Because federal law demands irrevocability for a first-party trust, there is no real decision to make: write it as revocable and the entire balance counts as a resource, and the beneficiary loses benefits.
Third-Party Trusts Can Go Either Way
A third-party special needs trust is funded by someone other than the beneficiary. The money never belonged to the person with a disability, so the trust falls outside the federal statute that forces first-party trusts to be irrevocable. Nothing in federal law requires a third-party trust to be irrevocable.
A parent setting one up during their lifetime can keep it revocable and retain the ability to amend the terms, change the funding level, or dissolve the trust if circumstances change. That flexibility can matter when a child’s disability-related needs are still coming into focus. The benefit protection does not depend on the grantor’s power to revoke; it depends on the beneficiary having no legal right to revoke the trust or demand distributions. Keep that line clean, and SSI and Medicaid will not count the trust assets.
Even with the option available, most families still choose irrevocable for third-party trusts, for practical reasons. An irrevocable trust lets other relatives and friends contribute with confidence that their gifts cannot be redirected. It also removes the assets from the grantor’s taxable estate, which matters for larger trusts. A revocable structure gives up both of those advantages in exchange for grantor control.
One wrinkle: a third-party trust created inside a will, which takes effect at the grantor’s death, is irrevocable from the moment it starts operating. The revocable-versus-irrevocable choice only exists for trusts the grantor sets up during their own lifetime.
No Medicaid Payback
The biggest structural advantage of a third-party trust is that no Medicaid payback applies, no matter which form the grantor chooses. When the beneficiary dies, remaining funds pass directly to whomever the grantor named.4Office of the Law Revision Counsel. 42 US Code 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets The state has no claim because the money was never the beneficiary’s to begin with. For families with meaningful assets to pass along, that difference from a first-party trust can be worth tens or hundreds of thousands of dollars.
Pooled Trusts: Irrevocable by Default
A pooled trust is a third option, run by a nonprofit that maintains one master trust with a separate sub-account for each beneficiary. The assets are combined for investment, which gives smaller accounts access to professional management that would be hard to justify in a standalone trust.4Office of the Law Revision Counsel. 42 US Code 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
Pooled trusts are irrevocable once funded. The beneficiary joins through a joinder agreement that opens their sub-account inside the larger trust, and the enrollment and ongoing fees are generally lower than running a standalone trust. That makes pooled trusts a practical fit for smaller amounts.
Pooled trusts also solve the age problem for first-party money. Someone over 65 who receives a settlement or inheritance can still place those funds in a pooled trust sub-account, where a standalone first-party trust would not be available. The catch is that transferring assets into a pooled trust after age 65 may trigger a Medicaid transfer penalty, which temporarily disqualifies the person from certain Medicaid benefits.5Social Security Administration. SI 01120.203 – Exceptions to Counting Trusts Established on or After January 1, 2000 The severity varies by state, so anyone in that position should get specific legal advice before moving the money.
When a pooled trust beneficiary dies, the nonprofit can retain whatever is left in the sub-account. To the extent the nonprofit does not keep it, the trust must reimburse Medicaid before distributing anything to other beneficiaries.5Social Security Administration. SI 01120.203 – Exceptions to Counting Trusts Established on or After January 1, 2000 Many nonprofits do retain the remaining balance, which keeps those funds out of Medicaid’s hands and also means the family inherits nothing.
Irrevocable Doesn’t Mean Frozen
Choosing an irrevocable structure, whether required or voluntary, is not a one-way door. Laws change, beneficiaries’ needs evolve, and a trust drafted twenty years ago may no longer serve its purpose well. Several tools exist to update an irrevocable special needs trust without destroying it.
Decanting
Decanting lets a trustee move the assets of an existing irrevocable trust into a new trust with updated terms. The new trust typically preserves the grantor’s original intent while fixing problems the grantor could not have anticipated, such as changes in tax law, new benefit program rules, or an outdated trustee provision. A majority of states have statutes authorizing decanting, though the rules on what can and cannot change vary.
Court Modification
A trustee or interested party can petition a court to modify the trust. Courts generally respect the grantor’s intent and will not grant sweeping rewrites, but they will approve changes to correct drafting errors, respond to unanticipated circumstances, or keep the trust compliant with current law. Court modification is slower and more expensive than decanting, but it is available in essentially every state and can handle situations the decanting statutes do not reach.
Trust Protectors
A well-drafted special needs trust often names a trust protector, a person or entity with authority to make specific changes without going to court. A protector may have power to amend administrative provisions, change the trust’s governing state law, or replace a trustee who is not performing. When benefit program rules shift, a trust protector can revise the trust immediately rather than waiting months for a court proceeding. Families setting up a new trust should seriously consider including a trust protector provision; the drafting cost is negligible compared to the cost of a future court petition.