Tennessee Code Title 40. Criminal Procedure § 40-34-108

(a)(1)(A) Notwithstanding any other law to the contrary, no sentence credits authorized by § 41-21-236 or any other provision of law, or no sentence contract authorized by this chapter or any other provision of law shall have the effect of reducing the amount of time an inmate must serve before the inmate's earliest release eligibility date, undiminished by the sentence credits, by more than thirty-five percent (35%).

(B) For inmates sentenced for offenses committed on or after January 1, 1988, no sentence credits or no sentence contract shall have the effect of reducing the amount of time an inmate must serve before the inmate's earliest release eligibility date, undiminished by the sentence credits, by more than thirty percent (30%).