STABLE Account vs Special Needs Trust in Arizona: Which Protects Benefits?
The Core Difference: Controlled by You or Controlled by a Trustee
Both STABLE accounts and special needs trusts (SNTs) let a person with a disability save money without losing SSI or AHCCCS (Arizona's Medicaid program). But they work very differently, cost very differently, and serve different financial realities.
A STABLE account (Arizona's ABLE program) is a tax-advantaged savings account that the beneficiary — or their parent or guardian — can open and manage directly. A special needs trust is a legal instrument drafted by an attorney, administered by a trustee, and subject to ongoing oversight. The choice between them comes down to how much money is involved, who needs to control it, and what the funds will be used for.
STABLE Account Basics
Arizona residents who developed a qualifying disability before age 46 can open a STABLE account through the AZ ABLE program. The annual contribution limit is $20,000, with an additional $15,650 available if the account holder is employed. Funds grow tax-free when used for qualified disability expenses — housing, education, transportation, healthcare, assistive technology, and basic living expenses.
The SSI-critical threshold: as long as the STABLE account balance stays under $100,000, it does not count as a resource for SSI eligibility. SSI payments pause (but don't terminate) if the balance exceeds $100,000. AHCCCS eligibility is unaffected regardless of the balance.
Setup cost is minimal — you open the account online, similar to a 529 plan. No attorney required. No trustee fees. The account charges a modest annual program fee.
Special Needs Trust Basics
A special needs trust holds assets "for the benefit of" the beneficiary without the beneficiary owning them. Because the trust — not the individual — owns the money, the assets don't count toward SSI's $2,000 resource limit or AHCCCS eligibility, regardless of how large the trust grows.
There are two main types. A first-party SNT (also called a d(4)(A) trust) holds the beneficiary's own money — typically from a personal injury settlement, inheritance, or back-pay award. A third-party SNT holds money contributed by family members and doesn't have a Medicaid payback requirement on the beneficiary's death.
Setup costs run from $2,000 to $5,000+ in attorney fees, and ongoing trustee fees (if a professional trustee is used) typically range from 1% to 1.5% of trust assets annually. For a pooled trust administered by a nonprofit, joining fees and monthly administration charges replace the individual trustee cost.
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Side-by-Side Comparison
| Feature | STABLE Account | Special Needs Trust |
|---|---|---|
| Annual contribution cap | $20,000 ($35,650 if employed) | No cap |
| Total balance cap (SSI safe) | $100,000 | No cap |
| Setup cost | Free to ~$50 | $2,000–$5,000+ |
| Ongoing fees | Low program fee | 1%–1.5%/year (professional trustee) |
| Who controls funds | Beneficiary or authorized signer | Trustee |
| Medicaid payback on death | Yes (first-party ABLE) | Yes (first-party SNT only) |
| Court involvement | None | Depends on who establishes it and the circumstances |
| Qualified expenses | Broad (housing, education, transport, health) | Broad, but trustee discretion applies |
When STABLE Wins
A STABLE account is the better fit when the total assets to protect are modest — generally under $100,000 — and the family wants direct, flexible control without legal costs or trustee oversight. It's the default choice for families managing SSI income, small savings, or birthday and holiday gifts that might otherwise push the beneficiary over SSI's resource limit.
It's also valuable as a complement to a trust. Many families use both: the SNT holds larger assets (an inheritance, a settlement), while the STABLE account handles day-to-day savings and spending on qualified expenses.
When a Trust Wins
A special needs trust becomes necessary when the assets involved exceed what a STABLE account can hold, or when the source of funds requires it. A personal injury settlement of $200,000 can't go into a STABLE account — it exceeds the annual contribution limit and would blow past the $100,000 SSI threshold. A first-party SNT is the standard vehicle for that scenario.
Third-party SNTs are the standard tool for estate planning. If grandparents want to leave an inheritance to a grandchild with a disability without disqualifying them from benefits, they direct the bequest into a third-party SNT rather than leaving it outright.
For families with assets exceeding $10,000 annually outside of Social Security, Arizona law may require a court-monitored conservatorship to manage those funds. A properly structured SNT can work alongside or in place of conservatorship, depending on the circumstances — but that's attorney territory.
The Guardianship Connection
Neither a STABLE account nor a trust gives a parent legal authority to make medical, educational, or personal decisions for their adult child. Those decisions require separate legal tools — a supported decision-making agreement, powers of attorney, or guardianship.
The Arizona Adult Guardianship & Alternatives Guide covers the full spectrum of legal and financial planning tools for families navigating the transition to adulthood, including how STABLE accounts and trusts fit into a broader benefits-protection strategy.
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