Washington Revised Code Title 30A. Washington Commercial Bank Act § 30A.22.180. Payment to personal representatives

(1) When the decedent was the depositor on a single account; or

(2) When the decedent was a depositor on a joint account without right of survivorship or the only surviving depositor on a joint account with right of survivorship, and has not designated a trust or P.O.D. account beneficiary of the decedent's interest, and the financial institution has received the proofs of death necessary to establish the deaths of the other depositors named on the account; or

(3) When the decedent was a beneficiary of a P.O.D. or trust account and the financial institution has received proofs of death of the beneficiary and all depositors to the account who, pursuant to the terms of the contract of deposit, were required to predecease the beneficiary; or

(4) When consent to the payment has been given in writing by all depositors and beneficiaries of the account; or

(5) When so ordered or directed by a superior court of the state or other court having jurisdiction over the matter.