South Dakota Special Needs Trust Rules (2026) | Complete State Guide

1. 1. South Dakota is a 1634 state — SSI approval means automatic Medicaid.
   If your child qualifies for SSI, they automatically qualify for South Dakota Medicaid. No separate application, no additional paperwork. This is simpler than states where you have to apply to Medicaid separately with different criteria.
2. 2. South Dakota has zero state taxes on trusts — that’s a real advantage.
   No state income tax. No state capital gains tax. No state estate tax. No state inheritance tax. This is written into the South Dakota Constitution. For a special needs trust, this means every dollar of investment growth stays in the trust — you only pay federal taxes. In states like California or New York, trust income tax can reach 13%+. In South Dakota, it’s zero. If you’re moving trust situs from another state, this is worth a conversation with your attorney.
3. 3. South Dakota uses expanded Medicaid estate recovery — and the rules depend on which type of trust you have.
   (For third-party SNTs) — This is the flip side of South Dakota’s trust-friendly reputation. The state can pursue recovery not just from probate assets, but from non-probate assets too — including jointly held property and transfer-on-death accounts (SDCL 28-6-23, SDCL 43-46-1). Many families assume a TOD deed or joint account protects them. In South Dakota, it doesn’t. A properly structured irrevocable third-party special needs trust is the most reliable way to protect assets.
   
   (For first-party SNTs) — Different rule. Because this trust was funded with your family member’s own money, federal law (42 USC §1396p) requires that any funds left in the trust when they pass away must first reimburse South Dakota Medicaid for benefits paid during their lifetime. This isn’t estate recovery — it’s a payback clause built into the trust itself. Whatever remains after Medicaid is repaid goes to the family. This is the tradeoff for protecting benefits during your family member’s life.
4. 4. South Dakota is the #1 trust-friendly state in America — and your family can benefit from that.
   South Dakota holds over $800 billion in trust assets across 118 chartered trust companies — more than any other state. The state abolished the rule against perpetuities in 1983 (first in the nation), created the first trust protector statute in 1997, and ranks #1 or #2 for domestic asset protection trusts. For special needs families, this means access to sophisticated trust structures, experienced trust companies, and the strongest creditor protections available. Under SDCL 55-1-24, a third-party discretionary trust interest is explicitly not a property interest — creditors simply cannot reach it.
5. 5. Medicaid expansion is live — but it’s under active threat.
   South Dakota voters approved Medicaid expansion in 2022 (Amendment D), and it took effect July 1, 2023. But in 2024, voters also approved Amendment F, which authorizes the legislature to impose work requirements on the expansion population (exempting disabled individuals). And on the November 2026 ballot, Amendment I would end the constitutional expansion requirement if federal funding drops below 90%. If you or your child relies on expanded Medicaid coverage, watch this closely. The landscape could change significantly by the end of 2026.
6. 6. South Dakota rejected the standard trust code most states use — and that matters for your documents.
   Most states adopted the Uniform Trust Code. South Dakota explicitly rejected it in 2007 and built its own framework under SDCL Title 55. The state also rejected the Restatement (Third) of Trusts. This means a trust drafted using standard UTC language from another state may not work properly in South Dakota. You need an attorney who drafts trusts under South Dakota law specifically.
7. 7. The trust can pay for groceries without reducing your child’s SSI.
   This changed in October 2024. Before that, buying food with trust money cut the SSI check. It doesn’t anymore. This is a big deal for day-to-day quality of life.
8. 8. The trust paying for housing DOES still reduce SSI.
   Rent, mortgage, utilities — if the trust pays those, the SSI check goes down (up to about $351/month in 2026). That’s the tradeoff, and it’s worth understanding before your trustee starts writing checks.
9. 9. Existing trusts can be modified through broad decanting powers.
   South Dakota’s decanting statute (SDCL 55-2-15 through 55-2-18) is among the most powerful in the nation. A trustee can move trust assets from an old trust to a new one with updated terms — without notice to beneficiaries and without court approval. If your child’s needs change, laws update, or you need to fix a drafting error, the trust can adapt. The 2025 trust legislation (SB 69) further clarified the distinction between decanting and trust modification.
10. 10. South Dakota has no Supported Decision-Making law — know your options.
    When your child turns 18, you may need legal authority to help with decisions. South Dakota uses “guardian” for personal decisions and “conservator” for financial matters — a court can appoint one or both, including limited versions. But unlike 25+ states that have enacted Supported Decision-Making laws, South Dakota has not. That means guardianship or conservatorship is the primary legal framework here, along with powers of attorney. Courts do require annual review and mandate training for all guardians and conservators (strengthened in 2023).
11. 11. The person managing the trust (the “trustee”) has to account for every dollar — no matter what type of trust you set up.
    Whether you created a third-party trust (funded with your money) or your child has a first-party trust (funded with theirs), South Dakota law (SDCL § 55-2-13) gives your family the right to request a full accounting of how trust money is being spent — unless the trust document specifically limits this right. If a bank, attorney, or family member is serving as trustee and won’t show you where the money is going, that’s a red flag. Make sure any trust you set up preserves your right to an accounting.

From my 15+ years helping families (including my own):

1. Assuming TOD deeds and joint accounts protect your family from Medicaid. South Dakota uses expanded estate recovery — the state can pursue non-probate assets including jointly held property and transfer-on-death accounts. Many families learn this too late. A properly drafted trust is the most reliable protection in South Dakota.
2. Leaving money directly to your disabled child. A well-meaning grandparent leaves $50,000 in a will to your child — and destroys their SSI and Medicaid. South Dakota’s $2,000 asset limit means even a small direct inheritance can wipe out benefits. Every dollar meant for your child needs to go through the trust, not to them.
3. Using an out-of-state trust template or generic online form. South Dakota explicitly rejected the Uniform Trust Code in 2007 and built its own framework. A template that works in Minnesota or Iowa may have gaps under SDCL Title 55. South Dakota’s trust law is better than the UTC for your family — but only if the document is drafted for it.
4. Not knowing South Dakota has no state ABLE program. South Dakota is one of only four states without its own ABLE program. But that doesn’t mean your child can’t have an ABLE account — you can open one through any state that accepts non-residents (over 30 states do). Many SD families don’t know this option exists. ABLE accounts let your loved one save up to $100,000 without jeopardizing SSI.
5. Not taking advantage of South Dakota’s trust-friendly laws. Your state is ranked #1 for asset protection trusts and holds over $800 billion in trust assets — but most special needs families never benefit from these advantages. Features like directed trusts, trust protectors, and dynasty trusts can make your child’s trust more flexible and better protected. Ask your attorney about these options.
6. Not planning for agricultural land properly. South Dakota has anti-corporate farming laws that restrict how trusts can hold farmland. A trust holding agricultural land must be structured as a family farm exception — requiring a family member who resides on or actively operates the farm. If your family’s wealth is tied up in farmland, this needs specific legal attention.
7. Creating the trust but never funding it. A trust sitting in a drawer with no assets in it protects nothing. The trust only works if you actually move assets into it — bank accounts, life insurance beneficiary designations, your will. This is the most common mistake I see.

The best way to avoid these mistakes? Work with an attorney who knows South Dakota special needs law. Find South Dakota attorneys →

Important: Federal law requires that upon the ABLE account holder’s death, remaining ABLE funds are subject to Medicaid payback for any Medicaid benefits paid on behalf of the individual. This applies regardless of which state’s ABLE program you use. Factor this into your planning — ABLE is still valuable, but it doesn’t avoid Medicaid recovery at death.

Beyond the Trust: Other South Dakota Planning Steps

Guardianship: When your child turns 18, you may need legal authority to help with decisions. South Dakota uses “guardian” for personal matters and “conservator” for finances. The state has not enacted a supported decision-making law, so limited guardianship or powers of attorney are the primary alternatives. Compare your options →
Disability Services: The Division of Developmental Disabilities administers the CHOICES and Family Support 360 waivers. Contact Dakota at Home at 833-663-9673 to learn about available services — apply even if you don’t need services today. Learn about waivers →