Tennessee Code Title 9. Public Finances § 9-4-1205

(a) As provided in this section, the purpose of the teacher legacy pension stabilization reserve trust fund is to protect teacher members of the legacy plan from a reduction or erosion of funds in the legacy plan that are necessary to pay benefits provided by the plan. If in any given year, the actuarially determined employer contribution rate for teachers exceeds the actuarially determined employer contribution rate for teachers as of fiscal year 2018, the board of trustees of the Tennessee consolidated retirement system may certify to the trustees of the trust the amount necessary to fund the increase in the employer contribution rate for that year. Upon receipt of the certification, the trustees of the trust shall determine whether transferring all or a portion of the requested amount from the teacher legacy pension stabilization reserve trust fund would be in the best interests of the trust beneficiaries. If it is, the trustees shall direct the treasurer to transfer such amount as the trustees shall determine from the teacher legacy pension stabilization reserve trust fund to the state accumulation fund of the legacy plan.

(b) The assets of the teacher legacy pension stabilization reserve trust fund shall be used exclusively for the purpose set forth in this section and to pay the reasonable expenses incurred in administering and investing the trust assets.