In certain Washington probate proceedings, the court may require appointment of a Probate Guardian ad Litem ("GAL") to represent the interests of a minor or legally incapacitated person whose interests may be affected by the proceeding.
Under RCW 11.76.080, a GAL must be appointed when a probate matter affects the interests of a person who:
- Is under the age of 18, or
- is alleged to be incapacitated or otherwise unable to adequately protect their interests in the proceeding.
The GAL's role is to represent and protect the interests of that individual during the probate proceeding, particularly when the court is asked to grant relief such as nonintervention powers or to approve actions affecting the person's inheritance or beneficial interests.
When Appointment of a GAL May Be Waived
Waiver of Probate GAL appointment is only available in testate probate. In intestate probate, if a minor or incapacitated person has an inheritance interest in the estate, appointment of a Probate GAL is mandatory.
In a testate probate, Washington law recognizes situations where appointment of a Probate GAL may not be necessary because another fiduciary or representative already adequately protects the person's interests. Because waiver analysis is highly fact-specific, practitioners should independently evaluate whether waiver is appropriate in the particular probate matter.
Existing Guardian or Conservator
A Probate GAL may not be required when the minor or incapacitated person already has a court-appointed guardian or conservator authorized to act on the person's behalf.
Trustee or Custodial Representative
A Probate GAL may also be unnecessary where the represented person's beneficial interest is held indirectly through another fiduciary relationship — for example, where a Trustee named under the decedent's Will or Trust, a Custodian acting under the Uniform Transfers to Minors Act (UTMA), or another acting fiduciary already adequately represents the beneficiary's interests in the probate proceeding.
Surviving Spouse and Minor Child Situations
Under RCW 11.76.080(2), a GAL may be unnecessary in a testate probate if:
- The decedent's surviving spouse is the sole beneficiary under the Will,
- The incapacitated person is the minor child of both the decedent and the surviving spouse, and
- The person's only incapacity is minority.
Full GAL vs. Limited GAL
When a Probate GAL is required, the scope of the appointment depends on the nature of the protected person's interest in the estate. The available options differ between testate and intestate probate.
In a testate probate, the court may appoint either a Full Probate GAL or a Limited Probate GAL.
| Full Probate GAL | Appointed when the represented person has direct inheritance rights, outright distributions, or substantial beneficial interests in the probate estate. Represents the protected person's interests broadly across the probate proceeding. |
| Limited Probate GAL | Appointed when the represented person is technically an heir or interested party but does not directly receive estate assets outright — for example, where the person's beneficial interest passes indirectly through a Trust or custodianship. The GAL's role is limited to evaluating specific probate issues such as whether nonintervention powers should be granted or whether notice should be waived. |
In probate matters, courts often prefer appointment of a Limited Probate GAL where the protected person's interests can be adequately represented within a narrowly defined scope.
If multiple parties are represented by a single GAL, those parties should generally have aligned interests and no conflict of interest should exist between them.
In intestate probate, all GAL appointments are Full Probate GALs. A Limited Probate GAL is not available in intestate proceedings.
A Full Probate GAL represents the protected person's interests broadly across the probate proceeding and is appropriate whenever a minor or incapacitated person has an inheritance interest in an intestate estate.
If multiple parties are represented by a single GAL, those parties should generally have aligned interests and no conflict of interest should exist between them.
How Agile Estate Planning Handles Probate GAL Requirements
The Guardian ad Litem tab is always available within the probate interview. The system will automatically evaluate the parties and roles entered on the earlier party-related tabs to determine whether a Probate GAL may be required or — in a testate probate — whether waiver of the probate GAL appointment may apply.
When the system identifies a potentially unrepresented minor, alleged incapacitated adult, or protected beneficiary, the GAL workflow guides you through identifying the parties requiring representation, determining the appropriate scope of representation, and evaluating whether an existing fiduciary relationship may eliminate the need for GAL appointment.
The software also updates probate pleadings and notices to reflect GAL representation where required and can prepare GAL appointment pleadings alongside the probate opening documents.
For a step-by-step walkthrough of completing the Guardian ad Litem tab, see the tab-specific article for your matter type: