71.22 (4) (m) 1. For taxable years beginning after December 31, 2020, “Internal Revenue Code" means the federal Internal Revenue Code as amended to December 31, 2020, except as provided in subds. 2. and 3. and subject to subd. 4., and except as provided in sub. (4m) and ss. 71.26 (2) (b) and (3), 71.34 (1g), 71.42 (2), and 71.98.

2. For purposes of this paragraph, “Internal Revenue Code" does not include the following provisions of federal public laws for taxable years beginning after December 31, 2020: section 13113 of P.L. 103-66; sections 1, 3, 4, and 5 of P.L. 106-519; sections 101, 102, and 422 of P.L. 108-357; sections 1310 and 1351 of P.L. 109-58; section 11146 of P.L. 109-59; section 403 (q) of P.L. 109-135; section 513 of P.L. 109-222; sections 104 and 307 of P.L. 109-432; sections 8233 and 8235 of P.L. 110-28; section 11 (e) and (g) of P.L. 110-172; section 301 of P.L. 110-245; section 15351 of P.L. 110-246; section 302 of division A, section 401 of division B, and sections 312, 322, 502 (c), 707, and 801 of division C of P.L. 110-343; sections 1232, 1241, 1251, 1501, and 1502 of division B of P.L. 111-5; sections 211, 212, 213, 214, and 216 of P.L. 111-226; sections 2011 and 2122 of P.L. 111-240; sections 753, 754, and 760 of P.L. 111-312; section 1106 of P.L. 112-95; sections 104, 318, 322, 323, 324, 326, 327, and 411 of P.L. 112-240; P.L. 114-7; section 1101 of P.L. 114-74; section 305 of division P of P.L. 114-113; sections 123, 125 to 128, 143, 144, 151 to 153, 165 to 167, 169 to 171, 189, 191, 307, 326, and 411 of division Q of P.L. 114-113; sections 11011, 11012, 13201 (a) to (e) and (g), 13206, 13221, 13301, 13304 (a), (b), and (d), 13531, 13601, 13801, 14101, 14102, 14103, 14201, 14202, 14211, 14212, 14213, 14214, 14215, 14221, 14222, 14301, 14302, 14304, and 14401 of P.L. 115-97; sections 40304, 40305, 40306, and 40412 of P.L. 115-123; section 101 (c) of division T of P.L. 115-141; sections 101 (d) and (e), 102, 201 to 207, 301, 302, and 401 (a) (47) and (195), (b) (13), (17), (22) and (30), and (d) (1) (D) (v), (vi), and (xiii) and (xvii) (II) of division U of P.L. 115-141; sections 104, 114, 115, 116, 130, and 145 of division Q of P.L. 116-94; sections 2304 and 2306 of P.L. 116-136; and sections 111, 114, 115, 116, 118 (a) and (d), 133, 137, 138, and 210 of division EE of P.L. 116-260.

3. For purposes of this paragraph, “Internal Revenue Code" does not include amendments to the federal Internal Revenue Code enacted after December 31, 2020.

4. For purposes of this paragraph, the provisions of federal public laws that directly or indirectly affect the Internal Revenue Code, as defined in this paragraph, apply for Wisconsin purposes at the same time as for federal purposes, except that changes made by sections 20101, 20102, 20104, 20201, 40201, 40202, 40203, 40308, 40309, 40311, 40414, 41101, 41107, 41114, 41115, and 41116 of P.L. 115-123; section 101 (a), (b), and (h) of division U of P.L. 115-141; section 1203 of P.L. 116-25; section 1122 of P.L. 116-92; section 301 of division O, section 1302 of division P, and sections 101, 102, 103, 117, 118, 132, 201, 202 (a), (b), and (c), 204 (a), (b), and (c), 301, and 302 of division Q of P.L. 116-94; section 2 of P.L. 116-98; and sections 301, 302, and 304 of division EE of P.L. 116-260 apply for taxable years beginning after December 31, 2020.

71.22 (4m) (j) 3. m. Sections 101 (m), (n), (o), (p), and (q), 104 (a), and 109 of division U of P.L. 115-141.

71.22 (4m) (j) 3. n. Section 102 of division M and sections 110, 111, and 116 (b) of division O of P.L. 116-94.

71.22 (4m) (k) 3. For purposes of this paragraph, “Internal Revenue Code" does not include amendments to the federal Internal Revenue Code enacted after December 31, 2016, except that “Internal Revenue Code” includes sections 11024, 11025, and 13543 of P.L. 115-97; sections 40307 and 40413 of P.L. 115-123; sections 101 (m), (n), (o), (p), and (q), 104 (a), and 109 of division U of P.L. 115-141; and section 102 of division M and sections 110, 111, and 116 (b) of division O of P.L. 116-94.

71.22 (4m) (L) 1. For taxable years beginning after December 31, 2017, and before January 1, 2021, “Internal Revenue Code", for corporations that are subject to a tax on unrelated business income under s. 71.26 (1) (a), means the federal Internal Revenue Code as amended to December 31, 2017, except as provided in subds. 2. and 3. and s. 71.98 and subject to subd. 4.

71.22 (4m) (L) 3. For purposes of this paragraph, “Internal Revenue Code" does not include amendments to the federal Internal Revenue Code enacted after December 31, 2017, except that “Internal Revenue Code” includes sections 40307, 40413, and 41113 of P.L. 115-123; sections 101 (m), (n), (o), (p), and (q), 104 (a), 109, 401 (a) (54) and (b) (15) (A), (B), and (C), 19, 20, 23, 26, 27, and 28 of division U of P.L. 115-141; sections 102 and 104 of division M, sections 102, 103, 106, 107, 108, 109, 110, 111, 113, 114, 115, 116, 201, 204, 205, 206, 302, 401, and 601 of division O, section 1302 of division P, and sections 131, 202 (d), and 205 of division Q of P.L. 116-94; sections 1106, 2202, 2203, 2204, 2205, 2206, 2307, 3608, 3609, 3701, and 3702 of division A of P.L. 116-136; and sections 202, 208, 209, 211, and 214 of division EE and sections 276 (a) and (b), 277, 278 (a), (b), (c), and (d), 280, and 285 of division N of P.L. 116-260.

71.22 (4m) (L) 4. For purposes of this paragraph, the provisions of federal public laws that directly or indirectly affect the Internal Revenue Code, as defined in this paragraph, apply for Wisconsin purposes at the same time as for federal purposes, except that changes made by P.L. 115-63 and sections 11026, 11027, 11028, 13207, 13306, 13307, 13308, 13311, 13312, 13501, 13705, 13821, and 13823 of P.L. 115-97 first apply for taxable years beginning after December 31, 2017.

71.22 (4m) (m) 1. For taxable years beginning after December 31, 2020, “Internal Revenue Code," for corporations that are subject to a tax on unrelated business income under s. 71.26 (1) (a), means the federal Internal Revenue Code as amended to December 31, 2020, except as provided in subds. 2. and 3. and s. 71.98 and subject to subd. 4.

2. For purposes of this paragraph, “Internal Revenue Code" does not include the following provisions of federal public laws for taxable years beginning after December 31, 2020: section 13113 of P.L. 103-66; sections 1, 3, 4, and 5 of P.L. 106-519; sections 101, 102, and 422 of P.L. 108-357; sections 1310 and 1351 of P.L. 109-58; section 11146 of P.L. 109-59; section 403 (q) of P.L. 109-135; section 513 of P.L. 109-222; sections 104 and 307 of P.L. 109-432; sections 8233 and 8235 of P.L. 110-28; section 11 (e) and (g) of P.L. 110-172; section 301 of P.L. 110-245; section 15351 of P.L. 110-246; section 302 of division A, section 401 of division B, and sections 312, 322, 502 (c), 707, and 801 of division C of P.L. 110-343; sections 1232, 1241, 1251, 1501, and 1502 of division B of P.L. 111-5; sections 211, 212, 213, 214, and 216 of P.L. 111-226; sections 2011 and 2122 of P.L. 111-240; sections 753, 754, and 760 of P.L. 111-312; section 1106 of P.L. 112-95; sections 104, 318, 322, 323, 324, 326, 327, and 411 of P.L. 112-240; P.L. 114-7; section 1101 of P.L. 114-74; section 305 of division P of P.L. 114-113; sections 123, 125 to 128, 143, 144, 151 to 153, 165 to 167, 169 to 171, 189, 191, 307, 326, and 411 of division Q of P.L. 114-113; sections 11011, 11012, 13201 (a) to (e) and (g), 13206, 13221, 13301, 13304 (a), (b), and (d), 13531, 13601, 13801, 14101, 14102, 14103, 14201, 14202, 14211, 14212, 14213, 14214, 14215, 14221, 14222, 14301, 14302, 14304, and 14401 of P.L. 115-97; sections 40304, 40305, 40306, and 40412 of P.L. 115-123; section 101 (c) of division T of P.L. 115-141; sections 101 (d) and (e), 102, 201 to 207, 301, 302, and 401 (a) (47) and (195), (b) (13), (17), (22) and (30), and (d) (1) (D) (v), (vi), and (xiii) and (xvii) (II) of division U of P.L. 115-141; sections 104, 114, 115, 116, 130, and 145 of division Q of P.L. 116-94; sections 2304 and 2306 of P.L. 116-136; and sections 111, 114, 115, 116, 118 (a) and (d), 133, 137, 138, and 210 of division EE of P.L. 116-260.

3. For purposes of this paragraph, “Internal Revenue Code" does not include amendments to the federal Internal Revenue Code enacted after December 31, 2020.

4. For purposes of this paragraph, the provisions of federal public laws that directly or indirectly affect the Internal Revenue Code, as defined in this paragraph, apply for Wisconsin purposes at the same time as for federal purposes, except that changes made by sections 20101, 20102, 20104, 20201, 40201, 40202, 40203, 40308, 40309, 40311, 40414, 41101, 41107, 41114, 41115, and 41116 of P.L. 115-123; section 101 (a), (b), and (h) of division U of P.L. 115-141; section 1203 of P.L. 116-25; section 1122 of P.L. 116-92; section 301 of division O, section 1302 of division P, and sections 101, 102, 103, 117, 118, 132, 201, 202 (a), (b), and (c), 204 (a), (b), and (c), 301, and 302 of division Q of P.L. 116-94; section 2 of P.L. 116-98; and sections 301, 302, and 304 of division EE of P.L. 116-260 apply for taxable years beginning after December 31, 2020.

71.22 (5g) For purposes of s. 71.22 (4) (b) and (4m) (b), 2013 stats., “Internal Revenue Code" includes section 109 of division U of P.L. 115-141.

71.26 (2) (b) 10. d. For purposes of subd. 10. a., “Internal Revenue Code" does not include amendments to the federal Internal Revenue Code enacted after December 31, 2013, except that “Internal Revenue Code" includes the provisions of P.L. 113-97, P.L. 113-159, P.L. 113-168, section 302901 of P.L. 113-287, sections 171, 172, and 201 to 221 of P.L. 113-295, sections 102, 105, and 207 of division B of P.L. 113-295, P.L. 114-14, P.L. 114-26, section 2004 of P.L. 114-41, sections 503 and 504 of P.L. 114-74, sections 103, 104, 124, 168, 184, 185, 190, 204, 303, 306, 336, and 341 of division Q of P.L. 114-113, and P.L. 114-239, sections 101 (m), (n), (o), (p), and (q), 104 (a), and 109 of division U of P.L. 115-141, and section 102 of division M and sections 110, 111, and 116 (b) of division O of P.L. 116-94.