Texas Property Code - PROP § 73.101. Inactive Account or Safe Deposit Box Presumed Abandoned

(1) except as provided by Subsection (c), the account or safe deposit box has been inactive for at least five years as determined under Subsection (b);

(2) the location of the depositor of the account or owner of the safe deposit box is unknown to the depository; and

(3) the amount of the account or the contents of the box have not been delivered to the comptroller in accordance with Chapter 74.

(1) an account becomes inactive beginning on the date of the depositor's last transaction or correspondence concerning the account; and

(2) a safe deposit box becomes inactive beginning on the date a rental was due but not paid.