Power of Attorney vs. Guardianship for a Minor Child in Washington

A grandparent or relative in Washington who is raising a child usually needs one of two things: a parental power of attorney (POA) or a court-ordered minor guardianship. They overlap in some ways — both can authorize you to make decisions for a child — but they are fundamentally different legal tools with different strengths and serious limitations.

How a Parental Power of Attorney Works

Under RCW 11.130.145, a parent may delegate by power of attorney parental powers regarding a minor's care, custody, or property for up to 24 months, except the power to consent to marriage or adoption. RCW 11.125.410 separately allows a parent or guardian to authorize an agent to make health care decisions when no other parent or legal representative is readily available and authorized to consent. The power of attorney must be signed and dated by the principal, then acknowledged before a notary or attested by two competent witnesses who meet the statute's restrictions. No court appointment is required for the parent to delegate these powers.

Duration: Maximum 24 months. After that, it must be renewed or the authority lapses.

Who can create it: A parent may delegate parental powers under RCW 11.130.145. A guardian may authorize an agent to make health care decisions under RCW 11.125.410. As the caregiver, you cannot sign a parent's power of attorney on their behalf.

Revocation: The principal may revoke the power of attorney; revocation terminates it under RCW 11.125.100.

How Minor Guardianship Works

Under RCW 11.130, a guardianship is a court order issued by a Superior Court judge. The court appoints a guardian after reviewing a petition, conducting background checks, and holding a hearing. Parents must be notified and can object.

Duration: Until the child dies, is adopted, is emancipated, reaches majority, or the court terminates the order.

Who can file: Any person interested in the child's welfare, including the child, may petition.

Revocation: Only the court can modify or terminate a guardianship. If the basis for appointment no longer exists, the guardianship terminates unless the court finds that termination would harm the child and the child's interest in continuing the guardianship outweighs the parent's interest in restoring decision-making rights. A parent may petition using Form GDN M 502.

Side-by-Side Comparison

When a POA Is Enough

A parental POA works when:

• The parent is cooperative and willing to sign
• The arrangement is temporary — a military deployment, a work assignment, a short-term health crisis
• You need basic authority for school enrollment, routine medical appointments, and after-school activities
• There is no risk that the parent will revoke it at an inconvenient time

A POA requires no court appearance, but the principal must sign and date it, then acknowledge the signature before a notary or use two competent witnesses who meet the statutory restrictions. For a grandparent watching a grandchild for six months while a parent completes a treatment program, it may be exactly the right tool.

When You Need Guardianship Instead

A POA breaks down when:

• The parent will not sign. A parent who is incarcerated, in active addiction, missing, or hostile will not voluntarily delegate authority. Without parental consent, a court may appoint a guardian only if all parental rights have been terminated or clear and convincing evidence shows no parent is willing or able to exercise parenting functions, and appointment is in the child's best interest.
• The parent might revoke it. If you worry that a parent could show up and take the child back at any moment, a POA offers no protection. A guardianship order means only the court can change the arrangement.
• Institutions require a court order. Some medical providers, insurance companies, banks, and passport offices will not accept a POA for a child. Letters of Guardianship document the court appointment and any limits or conditions on the guardian's powers.
• You need access to benefits. DSHS offers child-only TANF/SFA for eligible relatives, guardians, or custodians caring for a minor, and a parent or caretaker relative may apply for Apple Health for a child. GAP is separate and requires a qualifying foster-care placement and guardianship order; a POA alone does not establish GAP eligibility. Certain Medicaid enrollments may require a court order rather than a POA.
• The arrangement is long-term. A POA expires after 24 months. If you expect to raise the child through high school, a guardianship provides lasting authority without repeated renewals.

One Common Mistake

Relatives sometimes start with a POA and plan to "upgrade" to guardianship later. This can backfire. If the parent signs a POA and then revokes it before you file for guardianship, you may find yourself with no legal authority at all — and a parent who is now hostile to your petition. If the long-term plan is guardianship, filing sooner rather than later is generally safer.

Your Next Step

Our Washington Guardianship Court Process Guide walks through the full guardianship filing process and explains how a POA fits into the broader picture of legal options for relatives raising a child in Washington.

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