The investment fee rate may not be increased over the applicable 1987 investment fee rate for any employer with a positive balance in the employer's experience-rating account on the computation date, as established in rules promulgated by the secretary of labor and regulation, in accordance with chapter 1-26 , for the current year and the year preceding the current year. The investment rates provided in this section apply to and are retroactive to taxable wages paid on and after January 1, 1993. Source: SL 1987, ch 387 , § 5; SL 1988, ch 413 , § 4; SL 1989, ch 448 , § 4; SL 1991, ch 416 , § 4; SL 1993, ch 375 , § 28; SL 1993, ch 378 , § 4; SL 2006, ch 268 , § 1; SL 2011, ch 1 (Ex. Ord. 11-1), § 33, eff. Apr. 12, 2011; SL 2011, ch 225 , § 3; SL 2011, ch 227 , § 1, eff. Mar. 17, 2011; SDCL § 61-5-24.1; SL 2012, ch 252 , § 59; SL 2017, ch 217 , § 5; SL 2019, ch 217 , § 4; SL 2023, ch 171 , § 6; SL 2025, ch 199 , § 4.