How Does Estate Planning Work in Hawaii?

Hawaii has adopted the Uniform Trust CodeHRS Ch. 554D (Uniform Trust Code)Verified Jul 15, 2026View source and does not require witnesses for trust executionHRS Ch. 554D (Uniform Trust Code)Verified Jul 15, 2026View source. Notarization is not required for validityHRS Ch. 554D (Uniform Trust Code)Verified Jul 15, 2026View source, though many financial institutions require notarized trust documents. The successor trustee can publish Hawaii's optional creditor notice to shorten the claim window to 4 monthsHRS § 560:3-801(f) (trustee/successor trustee MAY publish notice to creditors triggering a 4-month claims bar — elective safe harbor, no duty); HRS § 560:3-803(a) (probate non-claim bar explicitly binds the "decedent's trustee" — 4 months after publication / 60 days after service, else 18 months after death); HRS § 554D-505(a)(3) (trust property reachable only "to the extent the settlor's probate estate is inadequate"). Ch. 554D Part 5 has no §508-type elective claims-bar; Hawaii places the trustee election in the probate code at § 560:3-801(f). Verified 2026-07-15.Verified Jul 15, 2026View source; without it, the settlor's creditors have up to 18 monthsHRS § 560:3-801(f) (trustee/successor trustee MAY publish notice to creditors triggering a 4-month claims bar — elective safe harbor, no duty); HRS § 560:3-803(a) (probate non-claim bar explicitly binds the "decedent's trustee" — 4 months after publication / 60 days after service, else 18 months after death); HRS § 554D-505(a)(3) (trust property reachable only "to the extent the settlor's probate estate is inadequate"). Ch. 554D Part 5 has no §508-type elective claims-bar; Hawaii places the trustee election in the probate code at § 560:3-801(f). Verified 2026-07-15.Verified Jul 15, 2026View source to bring a claim.

A healthcare power of attorney in Hawaii requires 2 witnesses or notarizationHRS § 327E-16Verified Jul 15, 2026View source to be valid. A financial power of attorney requires no witnesses or notarizationHRS § 551E-3, § 551E-5, § 551E-9, § 551E-15, § 551E-16, § 551E-31, § 551E-47, § 551E-51 (L 2014, c 22); HRS § 502-84, § 501-174 (recording)Verified Sep 18, 2026View source. A financial power of attorney is durable by default, so it stays in effect if you become incapacitatedHRS § 551E-3, § 551E-5, § 551E-9, § 551E-15, § 551E-16, § 551E-31, § 551E-47, § 551E-51 (L 2014, c 22); HRS § 502-84, § 501-174 (recording)Verified Sep 18, 2026View source.

In Hawaii, the executor files an inventory of the estate's assets within 90 daysHRS § 560:3-706Verified Sep 15, 2026View source of appointment. A revocable trust skips the court-supervised inventory, so a trustee distributes without filing one.

In Hawaii, divorce automatically revokes a beneficiary designation that names a former spouseHRS § 560:2-804Verified Sep 15, 2026View source on the covered accounts, so the asset does not pass to the ex-spouse unless the designation is renewed after the divorce.