Whether one joint tenant's unilateral pledge of a jointly held certificate of deposit as security for another person's debt severs the joint tenancy.
Holding
Yes. Harry's unilateral pledge severed the unity of interest, dissolved the joint tenancy, and converted the parties' interests into a tenancy in common.
Reasoning
Kansas law requires four unities for a joint tenancy to continue: time, title, interest, and possession. A joint tenancy may end by mutual agreement, by mutual conduct showing that the parties treated their interests as held in common, or by operation of law when any required unity is destroyed. Because Harry and Ida neither mutually agreed to end the tenancy nor jointly treated the certificate as common property, the case turned on whether the pledge destroyed a unity.
A pledge is a bailment of personal property given as security for a debt. Kansas treats a pledge as a lien, meaning a charge or encumbrance that ties particular property to a debt and makes the property security for repayment. Harry's security agreement therefore imposed a formal lien on the certificate of deposit.
The court treated the pledge like a mortgage for purposes of severance. The Kansas Supreme Court had stated that a joint tenant may sever a real-property joint tenancy by mortgaging that tenant's interest. Although this case involved personal property and a pledge rather than real property and a mortgage, both devices encumber property as security for debt, and the court found no material difference in their operative effect.
Harry's pledge deprived Ida of the unrestricted use and enjoyment of her undivided interest in the certificate because the Bank had a charge against the entire certificate to secure Dale's note. That formal encumbrance destroyed the unity of interest. As a result, the joint tenancy ended as a matter of law before Harry died, so Ida could not take the entire certificate by survivorship free of the Bank's claim.