Special Needs Trust Calculator: First-Party vs Third-Party vs Pooled
A special needs trust calculator can help you choose among the three SNT types authorized by federal law and estimate the setup cost.
A first-party (self-settled) SNT under 42 U.S.C. §1396p(d)(4)(A) holds the beneficiary's own money (personal injury settlement, back SSDI, inheritance). The beneficiary must be under 65 when the trust is established, and any remainder at death must repay Medicaid.
A third-party SNT, funded by parents or other family, has no age limit and no Medicaid payback. The remainder passes to family.
A pooled SNT under 42 U.S.C. §1396p(d)(4)(C) is run by nonprofits. It is the fallback for beneficiaries 65+ who are funding the trust with their own money and for modest funding amounts under about $100,000.
Under POMS SI 01120.200, assets in a properly drafted SNT are not countable resources for SSI or Medicaid. Setup costs range from $500 to $1,500 for a pooled SNT to $3,000 to $5,000 for a standalone first-party or third-party SNT.
Families covering smaller, day-to-day expenses often pair a trust with an ABLE account, a separate tool with its own annual contribution cap and rules.
How it's calculated
The calculator matches the beneficiary's age, the funding source, current benefit status, and funding amount against the three SNT categories. The critical fork: is the money the beneficiary's own or someone else's? If the money is the beneficiary's (personal injury settlement, back SSDI award, direct inheritance), federal law requires either a first-party (d)(4)(A) SNT or a pooled (d)(4)(C) SNT. First-party requires the beneficiary to be under 65 at establishment — after 65, only pooled is available, and in most states 65+ funding of a pooled SNT triggers a Medicaid transfer penalty. Both require Medicaid payback: any remaining trust assets at the beneficiary's death repay state Medicaid for benefits paid, up to the trust balance.
If the money is a family member's, a third-party SNT is the tool. Third-party SNTs have no age limit, no Medicaid payback, and remainder can pass to siblings or other family. Third-party SNTs can be established during the funder's life (inter vivos) or created inside a parent's will (testamentary).
What SNTs can pay for changed materially in 2024. Under 89 FR 21199 effective September 30, 2024, food no longer counts as in-kind support and maintenance (ISM) for SSI. That means SNT distributions for food no longer reduce SSI. Shelter (rent, mortgage, utilities, property taxes) still triggers the Presumed Maximum Value reduction — up to one-third of SSI FBR ($994 × 1/3 = $331) plus $20 general income exclusion, so a shelter distribution reduces SSI by up to $311/month. Cash distributions directly to the beneficiary are unearned income and reduce SSI dollar-for-dollar. Everything else — medical care not covered by Medicaid, therapy, transportation, education, vacations, personal care, electronics, hobbies — is safe.
Cost ranges reflect 2026 national attorney fee surveys and vary materially by state and complexity. Pooled SNT setup is $500-$1,500 (nonprofit administrator handles most drafting). Standalone first-party or third-party SNT setup is $2,500-$5,000. A professional or corporate trustee typically adds roughly 1% of trust assets per year in ongoing fees; a family member serving as trustee usually does not charge this fee.
First-Party vs. Third-Party Special Needs Trust
First-party and third-party special needs trusts differ on four points: funding source, Medicaid payback, the age-65 cutoff, and who can set the trust up. Funding source: a first-party SNT holds the beneficiary's own assets, most often a personal-injury settlement, back SSDI, or an inheritance paid directly in the beneficiary's name. A third-party SNT holds assets that never belonged to the beneficiary, funded instead by a parent, grandparent, or another family member. Medicaid payback: a first-party trust must repay state Medicaid at the beneficiary's death for benefits received, up to the trust balance. A third-party trust owes Medicaid nothing. Whatever remains passes to whoever the trust document names. Age-65 cutoff: a first-party SNT generally has to be established before the beneficiary turns 65, under 42 U.S.C. §1396p(d)(4)(A). A third-party trust carries no age limit. Who can establish it: federal law lets the beneficiary, a parent, a grandparent, a guardian, or a court set up a first-party trust. A third-party trust can be set up by any third party. In estate planning, that third party is almost always a parent.
A family doing proactive estate planning for a disabled child, with no settlement or inheritance involved, almost always wants a third-party SNT. A third-party SNT carries no Medicaid payback obligation, and no state agency has to be repaid after the beneficiary dies. A first-party SNT becomes necessary only when the disabled person already owns money that would disqualify them from Medicaid or SSI on its own. That kind of money is most often a lawsuit settlement or an inheritance paid directly to them. In that case, the trust exists to preserve the eligibility that money would otherwise cost them.
A worked example
Consider a 12-year-old child with autism receiving SSI and Medicaid whose grandparent wants to leave $250,000 for the child's benefit. The recommended trust is a third-party SNT because the grandparent is funding with her own money, not the child's.
There is no age limit and no Medicaid payback — remainder at the child's death passes to whomever the grandparent names (typically siblings). Setup cost: $2,500-$5,000 for a standalone third-party SNT drafted by a special-needs attorney.
The trust can pay for therapy not covered by Medicaid, private-school tuition, adaptive equipment, vacations, and (as of 9/30/2024) food. It cannot pay cash to the beneficiary or pay rent/utilities without triggering the PMV reduction.
If the grandparent instead planned to fund only $50,000, a pooled third-party SNT would be more cost-effective at $500-$1,500 setup.
Common mistakes to avoid
- Using a first-party SNT for a beneficiary over 65. First-party (d)(4)(A) SNTs are only for beneficiaries under 65 at establishment. After 65, only a pooled (d)(4)(C) SNT is available — and in most states, 65+ funding triggers a Medicaid transfer penalty under 42 U.S.C. §1396p(c).
- Funding a third-party SNT with the beneficiary's own money. This makes it a first-party SNT by operation of law, triggering the Medicaid payback and (if over 65) the age problem. Third-party SNTs must be funded exclusively with the funder's own assets — never commingle.
- Giving the beneficiary a direct gift or inheritance instead of funding a trust. Cash or property handed straight to an SSI/Medicaid recipient counts toward the $2,000 federal resource limit and can end benefits the same month. Check the Medicaid spend-down calculator before assuming a small gift is harmless; a properly drafted SNT is what lets family money reach the beneficiary without crossing that limit.
- Distributing cash to the beneficiary. Cash directly to the beneficiary is unearned income and reduces SSI dollar-for-dollar. Pay third parties directly for goods and services — grocery store, pharmacy, landlord — never write a check to the beneficiary.
- Paying rent or utilities from the SNT. Shelter distributions trigger the PMV reduction of up to one-third SSI FBR ($331 in 2026) plus $20 general income exclusion. Total SSI reduction can be ~$311/month. Non-shelter housing costs (repairs, homeowners insurance, HOA fees) are safer than rent/mortgage.
- Self-drafting an SNT. SSI and Medicaid regulators routinely reject self-drafted SNTs, disqualifying the beneficiary from benefits. Every SNT must be drafted by an elder-law attorney experienced in special-needs planning — the state Medicaid agency and Social Security review the trust document.
- Forgetting food is no longer ISM. Under 89 FR 21199 effective September 30, 2024, food no longer counts as in-kind support and maintenance. SNTs can now pay for groceries and restaurant meals without reducing SSI — this is still novel and many older SNT operating manuals have not been updated.
Frequently asked questions
What is a special needs trust calculator?
A special needs trust calculator helps identify which of the three federally-authorized SNT types (first-party under 42 U.S.C. §1396p(d)(4)(A), third-party under POMS SI 01120.200, pooled under §1396p(d)(4)(C)) fits your situation based on the beneficiary's age, funding source, current benefits, and funding amount. It estimates typical setup costs ($500-$5,000 depending on type), shows whether Medicaid payback applies, and lists what the trust can and cannot pay for.
First-party vs third-party SNT — what's the difference?
A first-party SNT under 42 U.S.C. §1396p(d)(4)(A) holds the beneficiary's own money (personal injury settlement, back SSDI, direct inheritance). The beneficiary must be under 65 at establishment, and Medicaid payback is required at death. A third-party SNT is funded by someone else (parents, grandparents, siblings) with their own assets — no age limit, no Medicaid payback, remainder passes to family beneficiaries you name. Third-party is the preferred vehicle when family is doing the planning.
Can a first-party SNT be converted to a third-party SNT?
No. Once a trust holds the beneficiary's own money, it is a first-party SNT by law, and the Medicaid payback requirement attaches to it permanently. A first-party trust cannot later be redrafted as third-party. A well-drafted first-party trust can still name, in its own remainder clause, where funds go after Medicaid is repaid. That way, some assets pass to family instead of reverting entirely to the state. Because that remainder language has to be right from the start, an elder-law attorney should draft it before the trust is funded, not after.
What is a pooled special needs trust?
A pooled SNT under 42 U.S.C. §1396p(d)(4)(C) is run by a nonprofit that pools multiple beneficiaries' sub-accounts for investment purposes while keeping each account separate for distribution. Setup ranges $500-$1,500 versus $2,500-$5,000 for standalone trusts. Pooled is common when funding is modest (under $100,000), when the beneficiary is 65+ using their own money (the only option available), or when the family has no natural trustee. In most states, funding a pooled SNT after age 65 triggers a Medicaid transfer penalty.
How much does it cost to set up a special needs trust?
Standalone first-party or third-party SNTs run $2,500-$5,000 in setup fees drafted by an attorney experienced in special-needs planning, with higher fees in high-cost markets (Manhattan, San Francisco, Boston). Pooled SNTs run $500-$1,500 for the joinder agreement plus a nonprofit enrollment fee. Ongoing administration adds a professional trustee fee of roughly 1% of assets per year plus tax preparation ($500-$1,500/year). Self-drafting is not viable — Medicaid and SSA routinely reject self-drafted SNTs.
Does an SNT affect SSI or Medicaid?
No, if properly drafted. Assets in an SNT are not countable resources under POMS SI 01120.200 for SSI or under equivalent state Medicaid rules. Distributions are treated per SSI ISM (in-kind support and maintenance) rules: food distributions no longer count (89 FR 21199, effective 9/30/2024); shelter distributions trigger PMV reduction of up to one-third SSI FBR ($331 in 2026) plus $20 general income exclusion; cash to the beneficiary is unearned income and reduces SSI dollar-for-dollar. Third-party payments for medical care, therapy, transportation, education, vacations, and non-shelter expenses are safe.
How much money can a special needs trust hold?
There is no dollar cap on how much a properly drafted special needs trust can hold. That's the key difference from an ABLE account, which caps annual contributions. Under POMS SI 01120.200, an SNT's assets are excluded as a countable SSI and Medicaid resource regardless of size, as long as the trust meets the federal requirements for its type.
What is the downside of a special needs trust?
The biggest downside is a loss of direct control: every distribution has to go through the trustee instead of straight to the beneficiary, so a spontaneous purchase isn't possible the way it would be with the beneficiary's own money. A first-party SNT adds a further downside a third-party SNT doesn't carry, a Medicaid payback obligation at the beneficiary's death, up to the trust balance.
What can a special needs trust pay for?
SNTs can pay third parties directly for: medical care not covered by Medicaid, therapy (physical, occupational, speech), transportation and adaptive vehicles, education and tutoring, vacations and entertainment, personal care attendants beyond what Medicaid covers, electronics and internet, pets and hobbies, and (as of 9/30/2024) food. SNTs cannot: give cash to the beneficiary (reduces SSI dollar-for-dollar); pay rent, mortgage, utilities, or property taxes without triggering PMV (up to ~$311/mo SSI reduction). Structure distributions through third-party payment, never through the beneficiary.
Who should be the trustee of a special needs trust?
The trustee should be someone, or an institution, that understands SSI and Medicaid rules well enough to avoid a prohibited distribution that could cut off the beneficiary's benefits. Common choices are a trusted family member with financial competence, a professional fiduciary, or a corporate trustee for larger or more complex trusts. Many families use a co-trustee arrangement instead: a family member who knows the beneficiary's day-to-day needs paired with a professional who handles the technical compliance side.
Can a family member serve as trustee, or does it have to be a professional or bank?
Yes, a family member can serve as trustee of a special needs trust; there's no legal requirement to use a professional or corporate trustee. The catch is that SSI and Medicaid regulators routinely reject self-drafted trusts and scrutinize prohibited distributions, so a family trustee should get professional guidance up front on exactly what the trust can and can't pay for directly.
Are there ongoing costs after the trust is set up, like annual trustee fees?
Yes. Beyond the one-time setup cost, an SNT carries ongoing administration costs for as long as it holds assets. A professional or corporate trustee typically charges roughly 1% of trust assets per year to manage distributions and stay compliant with SSI/Medicaid rules, plus separate tax preparation costs. A family member serving as trustee usually does not charge this fee, though a co-trustee arrangement can still mean paying the professional co-trustee for the compliance work alone.
Sources
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