Alaska Supported Decision Making vs Guardianship

The Core Difference

Under a supported decision-making agreement (SDMA), the adult with support needs keeps all decision-making power. Supporters help them understand options and communicate choices, but the final call belongs to the principal.

Under a guardianship, the court transfers specific decision-making powers from the ward to the guardian. The guardian makes binding decisions in the areas covered by the court order.

Everything else — cost, process, permanence, oversight — flows from that fundamental distinction.

Side-by-Side Comparison

Who decides. SDMA: the principal, with support. Guardianship: the guardian, within the scope of the court order.

Court involvement. SDMA: none. It is a private agreement between the principal and their supporters. Guardianship: full Superior Court process — petition, independent evaluations, hearing, and ongoing judicial oversight.

Cost. SDMA: the cost of notarization or gathering two witnesses. Guardianship: $150 filing fee (waivable via Form TF-920), plus potential attorney fees ranging from $1,500 to $4,500 for full representation.

Timeline. SDMA: can be drafted, signed, and effective in a single day once the principal turns 18. Guardianship: 60 to 120 days from petition filing to hearing.

Ongoing obligations. SDMA: none. The agreement stays in effect until the principal revokes it. Guardianship: mandatory education within 30 days, a guardianship plan within 30 days, an inventory within 90 days, annual reports every year, and automatic three-year court visitor reviews.

Revocation. SDMA: the principal can revoke at any time with written notice — immediate effect. Guardianship: requires a PG-190 court petition, a hearing, and a judicial determination that the guardianship is no longer necessary.

Third-party recognition. Both carry legal weight. Under AS 13.56.130, third parties must recognize decisions communicated through an SDMA supporter. Under a guardianship order, the guardian has binding legal authority that third parties must follow.

When an SDMA Is Enough

An SDMA works when the young adult can express preferences and participate in decision-making with guidance. The principal does not need to manage decisions independently — they need to be able to choose trusted supporters and engage in the process with help.

Practical signals that an SDMA may be sufficient:

• The young adult can identify people they trust
• They can express preferences about medical treatment, living situations, or educational goals, even if they need help understanding the details
• Their primary challenge is processing complex information, not making choices at all

When Guardianship Becomes Necessary

Guardianship enters the picture when the young adult's cognitive, developmental, or psychiatric condition is severe enough that they cannot participate in decision-making even with support. The Alaska Supreme Court addressed this boundary in Matter of G.J.F. (2025) — the court will appoint a guardian when the individual cannot voluntarily participate in or understand the nature of an SDMA.

Red flags that point toward court-ordered authority:

• Medical providers report the young adult cannot consent to or refuse treatment, even with support
• Financial institutions flag exploitation risk that a supporter relationship cannot address
• The young adult's safety requires binding authority that a voluntary agreement does not provide

Even then, Alaska law mandates a limited guardianship rather than a full one whenever partial authority would meet the need.

They Are Not Mutually Exclusive

A young adult under a limited guardianship can simultaneously have an SDMA in place for areas outside the guardianship order. The guardian handles the specific domains where court-ordered authority is needed, while the SDMA supports the young adult's decision-making everywhere else.

The Alaska Adult Guardianship & Alternatives Guide includes a functional assessment worksheet that walks families through each decision-making domain — medical, educational, financial, housing, social — to determine which tool fits each area.

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