Indiana Code Title 32. Property § 32-17-11-7

Sec. 7. (a) As used in this chapter, “party” means a person who, by the terms of the account, has a present right, subject to request, to payment from a multiple party account.  A beneficiary of a trust account is a party only after the account becomes payable to the payee or beneficiary by reason of the payee's or beneficiary's surviving the original payee or trustee.

(b) Unless the context otherwise requires, the term includes a guardian, conservator, personal representative, or assignee, including an attaching creditor, of a party.  The term also includes a person identified as a trustee of an account for another whether or not a beneficiary is named.

(c) The term does not include: