A third-party special needs trust is an irrevocable trust that a parent, grandparent, or other person funds with their own assets for the benefit of someone with a disability, so that person can receive help without losing Supplemental Security Income (SSI) or Medicaid. Because the money never belonged to the beneficiary, the trust pays nothing back to Medicaid when the beneficiary dies, and whatever remains passes to the family members or charities the grantor named. That single feature is what makes this the preferred planning tool when the family has the choice of funding source.
How the Trust Works
Three roles sit inside every third-party special needs trust. The grantor creates the trust and contributes assets. The trustee holds and manages those assets and decides when to spend them. The beneficiary is the person with a disability, who benefits from distributions but never owns or controls the trust property.
The trust is almost always irrevocable. Once it’s finalized, the grantor cannot pull assets back or rewrite the terms. That irrevocability is the point: because the beneficiary has no legal power to revoke the trust or force distributions for their own support, the Social Security Administration does not count the trust as the beneficiary’s resource for SSI purposes.1Social Security Administration. POMS SI 01120.200 – Information on Trusts
Every dollar in the trust must come from someone other than the beneficiary or the beneficiary’s spouse. If the beneficiary’s own money accidentally ends up in the trust, the SSA may reclassify it and benefits can be jeopardized.1Social Security Administration. POMS SI 01120.200 – Information on Trusts Keeping the funding source clean is the first rule of this trust type.
Why Benefits Eligibility Is the Whole Point
SSI limits countable resources to $2,000 for an individual and $3,000 for a couple.2Social Security Administration. Understanding Supplemental Security Income SSI Resources If countable assets exceed the limit at the start of any month, SSI stops for that month. In most states Medicaid eligibility tracks SSI, so losing one often means losing the other.
Consider a grandparent who leaves $50,000 directly to a grandchild on SSI. The inheritance instantly puts the grandchild over the resource limit, SSI payments stop, and Medicaid coverage can disappear with them. The grandchild would need to spend down nearly the entire inheritance before regaining eligibility. A third-party special needs trust avoids that whole sequence by keeping the assets in the trust’s name instead of the beneficiary’s.
What the Trust Can Pay For
The trust supplements benefits, it doesn’t replace them. SSI and Medicaid handle basics; the trust covers everything they don’t: therapies Medicaid won’t pay for, adaptive technology, education, travel, recreation, personal care attendants, vehicle modifications, phone and internet service, and professional fees.
Distributions should go to vendors, not to the beneficiary. Cash handed directly to the beneficiary counts as unearned income under SSA rules and can reduce or wipe out the SSI payment dollar for dollar.3Social Security Administration. 20 CFR 416.1123 – How We Count Unearned Income If the beneficiary needs a laptop, the trustee buys it and has it shipped. The trustee doesn’t write a check to the beneficiary.
Shelter Payments and the ISM Rule
Shelter is the one category that still creates friction. When the trust pays rent, mortgage, utilities, or property taxes for the beneficiary, the SSA treats that as in-kind support and maintenance (ISM) and counts it as unearned income. The reduction is capped at the presumed maximum value (PMV), which equals one-third of the federal SSI benefit rate plus $20. With the 2026 federal benefit rate at $994 per month for an individual, the PMV works out to about $351 per month.4Social Security Administration. How Much You Could Get From SSI If the trust pays $2,000 in monthly rent, the SSI reduction is still capped at roughly $351. In expensive housing markets that trade is usually worth it.
A rule change that took effect in September 2024 removed food from the ISM calculation.5Federal Register. Omitting Food From In-Kind Support and Maintenance Calculations The trust can now pay for groceries or meals without affecting SSI. Only shelter still counts.
How It Differs From First-Party and Pooled Trusts
The defining question is whose money funds the trust. A first-party (self-settled) special needs trust holds the beneficiary’s own assets, usually after a personal injury settlement or an inheritance that arrived directly in the beneficiary’s name. Federal law allows these trusts only for beneficiaries under age 65, and they must be established by a parent, grandparent, legal guardian, or a court.6Office of the Law Revision Counsel. 42 USC 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets
First-party trusts carry a Medicaid payback requirement. When the beneficiary dies, remaining funds must first reimburse the state for Medicaid benefits paid during the beneficiary’s lifetime.6Office of the Law Revision Counsel. 42 USC 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets Depending on how long Medicaid paid, that can consume most of the trust.
A third-party trust has no payback requirement because the assets never belonged to the beneficiary. There’s no age restriction on when it can be created or funded, and at the beneficiary’s death the remainder goes to whomever the grantor chose. That is the central planning advantage.
A pooled trust is a third option, managed by a nonprofit that keeps a separate account for each beneficiary while combining assets for investment purposes.6Office of the Law Revision Counsel. 42 USC 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets Pooled trusts can accept both first-party and third-party contributions. Payback rules follow the source: first-party funds may require payback, third-party funds generally do not. Pooled trusts are useful when the amount being set aside is too small to justify a standalone trust or when the family has no one suitable to serve as trustee.
Setting Up the Trust
A third-party special needs trust requires a written trust agreement, and this is not a form-generator job. The document has to be drafted precisely so distribution standards, party designations, and language all align with federal and state benefits rules. An attorney who handles special needs planning regularly will know what belongs in it. Drafting fees typically run several thousand dollars, with wide variation by location and complexity.
Choosing a Trustee
The trustee runs everything: distributions, tax filings, recordkeeping, and the constant judgment calls about what the SSA will or won’t treat as a problem. A loving family member who doesn’t understand SSI rules can accidentally make a distribution that costs the beneficiary benefits.
Professional or corporate trustees bring expertise and long-term stability, which matters because these trusts can run for decades. They typically charge an annual fee in the range of 1% to 2% of trust assets for smaller trusts. Family trustees serve for free but may be overwhelmed by the administration and the regulatory complexity. A common compromise names a professional trustee for the financial side and a family member as co-trustee or trust advisor to supply the personal knowledge of the beneficiary.
Funding Options
The trust can be funded during the grantor’s lifetime through gifts, at death through a bequest, or by naming the trust as beneficiary of a life insurance policy. Life insurance is a popular route because it can deliver a large sum at the grantor’s death without tying up assets during life. Many families combine methods, using smaller lifetime gifts for current needs and insurance or a bequest for the long-term base.
The Letter of Intent
Alongside the legal document, families should write a letter of intent. It isn’t legally binding. It describes the beneficiary’s routines, food preferences, medical history, favorite activities, relationships, and the family’s goals for their care. A successor trustee reading it years from now will know that the beneficiary hates loud restaurants and loves swimming on Tuesday mornings. Update it as the beneficiary’s life changes.
Coordinating With an ABLE Account
ABLE accounts (Achieving a Better Life Experience) pair well with a third-party trust. These tax-advantaged accounts let a person with a disability save up to $20,000 per year in 2026 without losing SSI or Medicaid, and the first $100,000 in the account is excluded from the SSI resource count.7Social Security Administration. Spotlight on Achieving a Better Life Experience (ABLE) Accounts8ABLE National Resource Center. ABLE Account Contribution Limits As of January 1, 2026, the ABLE Age Adjustment Act raised the qualifying age of disability onset from 26 to 46, extending eligibility to millions more people.
A trustee can move funds from a third-party special needs trust into the beneficiary’s ABLE account up to the annual contribution limit. The ABLE account’s debit card gives the beneficiary direct control over day-to-day spending while the trust handles larger expenses. Growth inside the account is tax-free, and withdrawals for qualified disability expenses are also tax-free. One caution: ABLE distributions used for housing count as income for SSI, in a way that parallels the ISM reduction from the trust. If both tools are paying for shelter, coordinate so the beneficiary isn’t hit twice.
How the Trust Is Taxed
Tax treatment depends on how the trust is classified. If the grantor keeps certain powers over the trust, the IRS treats it as a grantor trust and its income flows through to the grantor’s personal return. The trust itself owes no separate income tax. That treatment generally ends when the grantor dies, and the trust typically becomes a non-grantor complex trust.
A non-grantor trust files its own Form 1041 and pays tax at the trust level on income it doesn’t distribute. The filing threshold is low: $600 in gross income, or any taxable income at all, triggers a return.9Internal Revenue Service. Instructions for Form 1041 The brackets are compressed. For 2026, trust income hits the top 37% rate at just $16,000, where an individual filer wouldn’t reach that rate until well over $500,000. Because of that compression, trustees often prefer to distribute income by paying for the beneficiary’s goods and services rather than letting it accumulate and get taxed at the top rate. If the trust expects to owe $1,000 or more for the year, the trustee must make quarterly estimated payments.10Internal Revenue Service. 2026 Form 1041-ES
What Happens to What’s Left
When the beneficiary dies, no Medicaid payback is required. Remaining assets pass to the remainder beneficiaries the grantor named in the trust document, who might be siblings, other relatives, or a charity.6Office of the Law Revision Counsel. 42 USC 1396p – Liens, Adjustments and Recoveries, and Transfers of Assets Name both primary and contingent remainder beneficiaries clearly. Vague remainder language is how families end up in court after a death that should have been a quiet administrative close-out.