Okla. Stat. tit. 62, § 34.85
The warrants issued under the authority of any deficiency certificate shall bear interest at a rate to be fixed by the State Treasurer not to exceed four percent (4%) per annum.
Laws 1947, SB 36, c. 1c, § 28, emerg. eff. February 25, 1947; Renumbered from 62 O.S. § 41.28 by Laws 2009, HB 2015, c. 441, § 64, emerg. eff. July 1, 2009.