Wyoming: Irrevocable Trust Modification and Termination Requirements
The short answer
Wyoming uses a distinctive consent structure: a court may approve living-settlor consent with all qualified beneficiaries even over a material purpose, while the post-death route requires the trustee and all qualified beneficiaries plus court findings. A trust protector may act when the instrument grants modification or termination power. Wyoming also recognizes bounded nonjudicial settlements, changed-circumstance orders, mistake and tax-objective modification, and a detailed trustee procedure for trusts worth less than $150,000.
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This is the general rule in Wyoming. Ask about your specific facts and see which parts of current Wyoming law apply, with citations to the statutes.
| Governing law and available routes | Wyoming Uniform Trust Code §§ 4-10-111, -411–-417, -808: NJSA, court consent, protector, changed-circumstance, sub-$150,000, mistake, tax, and directed-power routes |
|---|---|
| Settlor and beneficiary consent | Court may approve settlor + all qualified beneficiaries despite material purpose. Expressly authorized agent, or conservator/guardian, needs court approval and a no-conflict-with-purpose/intent finding (§ 4-10-412(a)) |
| Beneficiary-only consent and material purpose | No beneficiary-only route. After settlor death, trustee + all qualified beneficiaries + court; termination needs no remaining material purpose, modification must be consistent. Spendthrift not presumed material (§ 4-10-412(c)–(d)) |
| Nonconsent, representation, and adequate protection | Court may approve despite missing qualified-beneficiary consent if the all-consent route would work and the nonconsenter is adequately protected; conflict-limited powerholder, fiduciary, parent, successor-interest, identical-interest, and appointed representation apply (§§ 4-10-301–305, -412(f)) |
| Nonjudicial, trustee, protector, and agreement routes | NJSA signers are qualified beneficiary, living settlor, trustee, and protector; material-purpose/court-approvable limits apply. Protector may modify/terminate only if trust expressly grants that power; § 4-10-808 also recognizes instrument-granted directed power |
| Unanticipated circumstances and impracticable administration | Court may change administrative/dispositive terms or terminate when unanticipated circumstances make relief further purposes; administrative terms may change if impracticable, wasteful, or impairing (§ 4-10-413) |
| Uneconomic-trust modification or termination | FMV less than $150,000: trustee makes purpose-matched plan, gives written notice to all qualified beneficiaries, and waits 30 days after receipt. Timely written objection stops distribution and permits court review; spendthrift does not block unless trust expressly bars termination (§ 4-10-415) |
| Mistake reformation and tax-objective modification | Unambiguous terms may be reformed on clear-and-convincing proof that fact/law mistake affected intent and terms. Tax modification must match probable intent proved by preponderance and may be retroactive (§§ 4-10-416–417) |
| Procedure, notice, proof, spendthrift, and distribution | Settlor, trustee, or beneficiary may start §§ -412–-417 proceeding. Judicial notice follows Wyoming civil rules; statutory notice must result in receipt. Consent distribution follows trust terms or beneficiary agreement; general proposal carries 30-day objection bar and reserve (§§ 4-10-109–110, -411–-417, -817) |
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Requirements one by one
Living-settlor consent requires qualified beneficiaries and court
If the settlor and every qualified beneficiary consent, the court may approve
modification or termination even when it conflicts with a material purpose.
Section 4-10-412(a) makes this a petition route and gives the court discretion,
rather than making consent self-executing.
An agent needs express authority in the power of attorney or trust terms. An
agent, conservator, or guardian also needs court approval and a finding that the
consent is not inconsistent with the settlor's purpose or intent.
After the settlor's death, trustee consent is also required
Wyoming has no beneficiary-only route. Once the settlor is deceased, the
trustee and all qualified beneficiaries must consent. The court may terminate
only if continuation is unnecessary to achieve any material purpose, and may
modify only if the change is not inconsistent with one (§ 4-10-412(c)).
A spendthrift term is not presumed to be a material purpose. A trustee who
consents in good faith receives the statute's liability protection.
Representation and nonconsent have qualified-beneficiary limits
Conflict-limited powerholders, fiduciaries, parents, qualified beneficiaries
representing successor interests, persons with substantially identical
interests, and court-appointed representatives may bind others under
§ 4-10-301, § 4-10-302, § 4-10-303, § 4-10-304, and § 4-10-305. The settlor
cannot use representation to bind a beneficiary for § 4-10-412(a).
If a qualified beneficiary does not consent, the court may act only when the
all-consent route would have worked and that person's interest will be
adequately protected (§ 4-10-412(f)).
Protector and agreement routes depend on their own limits
Section 4-10-412(b) permits a trust protector to modify or terminate only when
the trust both authorizes a protector and grants that specific power.
Section 4-10-808 separately recognizes an instrument-granted power to direct
modification or termination and treats a nonbeneficiary holder as a fiduciary.
Under § 4-10-111, the NJSA signers are the qualified beneficiaries, living
settlor, trustee, and protector. Their agreement must preserve a material
purpose and contain terms the court could approve; court review is optional.
Changed circumstances focus on trust purposes
The court may change administrative or dispositive terms, or terminate, when
unanticipated circumstances make relief further trust purposes. Modification
should follow probable intent as far as practicable. Administrative terms may
also change when they are impracticable, wasteful, or impair administration
(§ 4-10-413).
The sub-$150,000 route is a plan-and-objection procedure
For a trust worth less than $150,000, the trustee first makes a distribution
plan matching trust purposes as nearly as possible. The trustee then gives
written notice to every qualified beneficiary. Distribution may proceed only
if no written objection arrives within 30 days after receipt.
A timely objection stops distribution. The trustee may then petition, and the
court may approve, modify, or reject the plan. A spendthrift term does not block
this route unless the instrument specifically denies the trustee termination
power. Conservation and preservation easements are excluded (§ 4-10-415).
Mistake and tax-objective orders use different proof
Under § 4-10-416, an unambiguous trust may be reformed only on clear and
convincing evidence that a fact-or-law mistake affected both settlor intent and
the trust's terms.
Under § 4-10-417, a tax-objective change must accord with probable intention
proved by a preponderance of the evidence, and the court may make it retroactive.
Standing, notice, and distribution depend on the route
The settlor, trustee, or beneficiary may start an approval proceeding under
§ 4-10-411. Statutory notice must use a suitable method that results in receipt,
and judicial notice follows Wyoming civil rules (§ 4-10-109). Requested-notice
rights differ before and after settlor death under § 4-10-110.
Consent termination distributes as the trust directs or, if silent, as all
beneficiaries agree. Section 4-10-817 separately permits a distribution
proposal that cuts off objections after 30 days only when it states the right
and deadline, while allowing a reasonable reserve for debts, expenses, and taxes.
What trips people up
- All beneficiaries is not the Wyoming phrase. The consent routes use all
qualified beneficiaries, and the post-death route also requires the trustee. - Protector authority must be express. A title alone does not create power
to modify or terminate. - The trustee ceiling is strictly below $150,000. Exactly $150,000 does not
qualify. - An objection changes the route. A timely written objection stops the
trustee's plan and sends any further request to court. - Two 30-day periods serve different jobs. Section 4-10-415 counts from
receipt of the termination-plan notice; § 4-10-817 concerns a later
distribution proposal.
Common questions
Can living-settlor consent override a material purpose?
Yes, but only through a petition with the settlor and every qualified
beneficiary consenting; the court may approve the change.
Can beneficiaries terminate after the settlor dies without the trustee?
No. Section 4-10-412(c) requires trustee consent too.
Can a trustee terminate a $150,000 trust without court?
No. The statutory procedure requires fair market value below $150,000.
Can an unambiguous drafting mistake be corrected?
Yes, on § 4-10-416's clear-and-convincing intent-and-mistake proof.
Statutes and sources
- Wyo. Stat. §§ 4-10-109–-111, 4-10-301–-305, and 4-10-411–-417 — notice,
nonjudicial settlement, representation, consent, changed circumstances,
uneconomic trusts, mistake, and tax objectives. Official Wyoming Title 4
(accessed 2026-08-11). - Wyo. Stat. § 4-10-808 — instrument-authorized power to direct
modification or termination and fiduciary limits. Official Wyoming Title 4
(accessed 2026-08-11). - Wyo. Stat. § 4-10-817 — termination distribution, reserve, and the
optional 30-day proposal procedure. Official Wyoming Title 4
(accessed 2026-08-11).
Source links
Every statute quoted above, linked, with the date we checked it.
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