Is a type of an account whereby the death of an owner sets aside the deceased's beneficial ownership for the estate. Surviving tenants do not necessarily acquire further interests in the account. Generally, the account ownership percentage is assumed to be pro rata. That is, if there are two owners of record each is assumed to own a 50 percent interest in the account. If there are five owners, then each is assumed to own a 20 percent interest in the account. However, the percentages do not have to be equal. In such cases written documentation is necessary to indicate unequal portions because the general assumption is equal shares. Is a type of an account whereby the death of an owner sets aside the deceased's beneficial ownership for the estate. Surviving tenants do not necessarily acquire further interests in the account. Generally, the account ownership percentage is assumed to be pro rata. That is, if there are two owners of record each is assumed to own a 50 percent interest in the account. If there are five owners, then each is assumed to own a 20 percent interest in the account. However, the percentages do not have to be equal. In such cases written documentation is necessary to indicate unequal portions because the general assumption is equal shares.