(2) A bank account owned jointly by husband and wife is not entireties property unless a contrary intent is clearly shown, or the account predates September 1, 1976. A bank account may be held in many forms, including ‘‘A and B,’’ ‘‘A or B,’’ ‘‘A and B, or both’’ and ‘‘A in trust for B.’’ The legal rights of the parties are not wholly determined by the title of the account. The account title or caption merely determines the rights of the account vis-a-vis the bank and not their rights vis-a-vis each other. The following rebuttable presumptions are applied in determining the availability of bank accounts:
(i) The persons whose names appear on the account title are the owners.
(ii) Persons who own an account jointly—for example, and, or, and/or—own the account in proportion to their contributions.
(iii) If contributions cannot be determined, each owner of a joint account owns an equal share.
(iv) If an account is titled ‘‘in trust for,’’ the account is a tentative trust, unless written trust documents exist. A tentative trust is owned by the trustee, and the beneficiary has no legal rights before the death of the trustee.