7 Tex. Admin. Code § 89.403
For purposes of Texas Finance Code, §351.155 (Acts 2007, 80th Leg., ch. 1220), notice of delinquency in the payment of an annual assessment fee is given upon the mailing of the delinquency notice, enclosed in a postpaid, properly addressed envelope, in a post office or official depository under the care and custody of the United States Postal Service.
Source Note:The provisions of this §89.403 adopted to be effective November 8, 2007, 32 TexReg 7920.