34 Tex. Admin. Code § 25.41
Persons who have been required by law to be members of the Teacher Retirement System of Texas but who have not made the required deposits shall start making deposits immediately for current service and shall make deposits as quickly as possible for previous service. Failure to make deposits in years of TRS-covered employment may result in ineligibility for benefits from TRS. Deposits for unreported service shall be paid in a manner consistent with any applicable limitations of 26 United States Code §415, including any applicable limitations on payments as a percentage of compensation from a TRS-covered employer in the school year in which the payments are made.
Source Note:The provisions of this §25.41 adopted to be effective January 1, 1976; amended to be effective March 12, 2003, 28 TexReg 2095.