The term "Internal Revenue Code" means the Internal Revenue Code as amended and in effect on the first day of January 2025, except that Internal Revenue Code section 85 is applied as in effect on January 1, 2020.

[63-3004, added 1959, ch. 299, sec. 4, p. 613; am. 1961, ch. 328, sec. 1, p. 622; am. 1963, ch. 339, sec. 1, p. 971; am. 1965, ch. 316, sec. 1, p. 880; am. 1967, ch. 294, sec. 1, p. 828; am. 1969, ch. 319, sec. 2, p. 982; am. 1970, ch. 222, sec. 2, p. 621; am. 1971, ch. 302, sec. 1, p. 1242; am. 1972, ch. 398, sec. 1, p. 1149; am. 1973, ch. 44, sec. 1, p. 79; am. 1974, ch. 56, sec. 1, p. 1118; am. 1975, ch. 12, sec. 1, p. 17; am. 1976, ch. 3, sec. 1, p. 12; am. 1977, ch. 1, sec. 1, p. 3; am. 1978, ch. 138, sec. 1, p. 313; am. 1979, ch. 255, sec. 1, p. 678; am. 1981, ch. 80, sec. 1, p. 113; am. 1982, ch. 11, sec. 1, p. 16; am. 1983, ch. 97, sec. 1, p. 209; am. 1984, ch. 35, sec. 1, p. 55; am. 1985, ch. 131, sec. 1, p. 326; am. 1986, ch. 11, sec. 1, p. 53; am. 1987, ch. 93, sec. 1, p. 176; am. 1988, ch. 2, sec. 1, p. 3; am. 1988, ch. 373, sec. 1, p. 1107; am. 1989, ch. 7, sec. 1, p. 8; am. 1990, ch. 34, sec. 1, p. 49; am. 1991, ch. 7, sec. 1, p. 18; am. 1991, ch. 55, sec. 1, p. 99; am. 1992, ch. 5, sec. 1, p. 10; am. 1993, ch. 1, sec. 1, p. 3; am. 1994, ch. 38, sec. 1, p. 56; am. 1995, ch. 79, sec. 1, p. 209; am. 1996, ch. 24, sec. 1, p. 59; am. 1997, ch. 19, sec. 1, p. 29; am. 1998, ch. 52, sec. 1, p. 206; am. 1999, ch. 27, sec. 1, p. 39; am. 2000, ch. 16, sec. 1, p. 32; am. 2001, ch. 58, sec. 1, p. 110; am. 2002, ch. 59, sec. 1, p. 127; am. 2003, ch. 350, sec. 1, p. 937; am. 2004, ch. 20, sec. 1, p. 22; am. 2005, ch. 14, sec. 1, p. 41; am. 2006, ch. 242, sec. 1, p. 736; am. 2007, ch. 13, sec. 1, p. 24; am. 2008, ch. 6, sec. 1, p. 7; am. 2008, ch. 319, sec. 1, p. 882; am. 2009, ch. 35, sec. 1, p. 105; am. 2009, ch. 228, sec. 1, p. 711; am. 2011, ch. 1, sec. 1, p. 3; am. 2012, ch. 2, sec. 1, p. 4; am. 2013, ch. 1, sec. 1, p. 3; am. 2014, ch. 10, sec. 1, p. 13; am. 2015, ch. 13, sec. 1, p. 17; am. 2016, ch. 1, sec. 1, p. 3; am. 2017, ch. 5, sec. 1, p. 17; am. 2018, ch. 3, sec. 1, p. 7; am. 2018, ch. 46, sec. 1, p. 111; am. 2018, ch. 198, sec. 1, p. 445; am. 2019, ch. 2, sec. 1, p. 4; am. 2019, ch. 161, sec. 11, p. 543; am. 2020, ch. 17, sec. 1, p. 54; am. 2021, ch. 8, sec. 1, p. 9; am. 2022, ch. 7, sec. 1, p. 20; am. 2023, ch. 1, sec. 1, p. 3; am. 2024, ch. 1, sec. 1, p. 3; am. 2025, ch. 1, sec. 1, p. 3.]