The executive director shall prepare monthly delinquency letters addressed to all licensees, who are delinquent for the renewal year ending that month, on the 10th calendar day after the end of each month. A one-year delinquency letter shall be mailed to each delinquent licensee. Once a licensee is delinquent for one year, his/her license is cancelled.
22 Tex. Admin. Code § 571.55