Chapter 71

71.385 71.385 Determination of cost. The cost of property used and useful in providing urban mass transportation of passengers and the depreciation accrued on such property shall be determined on the basis of the reports and orders on file with the department of transportation.

71.385 History History: 1987 a. 312; 1993 a. 16.

71.39 71.39 Imposition of tax.

71.39(1) (1) Special tax; computation. In lieu of the income and franchise tax rates prescribed in s. 71.27, there shall be assessed, levied and collected upon the taxable income of every corporation whose principal source (defined for purposes of this subchapter as being 50 percent or more) of gross income is the urban mass transportation of passengers a special income tax of 50 percent determined in accordance with this chapter, except that:

71.39(1)(a) (a) United States income, excess or war profits and defense taxes shall be allowed as a deduction from gross income to the extent of the total payment actually made during the tax year.

71.39(1)(b) (b) A deduction shall be allowed from such taxable income before the imposition of the special tax levied by this section, in an amount equivalent to 8 percent of the amount by which the cost of the property of such corporation used and useful in providing its urban mass transportation of passengers exceeds the cumulated amount of the depreciation accrued against such property as of the end of the fiscal year for which the income or franchise tax return is filed.

71.39(1)(c) (c) An amount shall be added to such taxable income, before imposition of the special tax levied by this section, which amount shall be equivalent to the interest paid during the year in the operation of the business from which its income is derived.

71.39(2) (2) Determination of net business loss. The addition to and deductions from income of urban transit companies under sub. (1) shall be used in determining the Wisconsin net business loss of such companies to be offset against the Wisconsin net business income as determined under this section for purposes of s. 71.26 (4).

71.39 History History: 1987 a. 312; 1991 a. 39.

71.40 71.40 Filing of returns. The special income tax assessed under this subchapter shall be reported in an income or franchise tax return filed in accordance with this chapter, except as modified by this subchapter. The tax so reported and assessed shall be payable to the department of revenue.

71.40 History History: 1987 a. 312; 1991 a. 39.

subch. VII of ch. 71 SUBCHAPTER VII

TAXATION OF INSURANCE COMPANIES

71.42 71.42 Definitions. In this subchapter:

71.42(1b) (1b) “Aggregate effective tax rate” means the sum of the effective tax rates imposed by a state, U.S. possession, foreign country, or any combination thereof, on the person or entity.

71.42(1g) (1g) “Corporation” means insurance corporations, insurance joint stock companies, insurance associations and insurance common law trusts, unless the context requires otherwise.

71.42(1m) (1m) “Department” means the department of revenue.

71.42(1s) (1s) “Effective tax rate” means the maximum tax rate imposed by the state, U.S. possession, or foreign country, multiplied by the apportionment percentage, if any, applicable to the person or entity under the laws of that state, U.S. possession, or foreign country.

71.42(1sg) (1sg) For purposes of ss. 71.45 (2) (a) 16. and 18. and 71.255 (2) (d) 1., “intangible expenses” include the following, to the extent that the amounts would otherwise be deductible in computing net income under the Internal Revenue Code, as adjusted under s. 71.45 (2):

71.42(1sg)(a) (a) Expenses, losses, and costs for, related to, or directly or indirectly in connection with the acquisition, use, maintenance, management, ownership, sale, exchange, or any other disposition of intangible property.

71.42(1sg)(b) (b) Losses related to, or incurred in connection directly or indirectly with, factoring transactions or discounting transactions.

71.42(1sg)(c) (c) Royalty, patent, technical, and copyright fees.

71.42(1sg)(d) (d) Licensing fees.

71.42(1sg)(e) (e) Other similar expenses, losses, and costs.

71.42(1sh) (1sh) “Intangible property” includes stocks, bonds, financial instruments, patents, patent applications, trade names, trademarks, service marks, copyrights, mask works, trade secrets, and similar types of intangible assets.

71.42(1t) (1t) For purposes of ss. 71.45 (2) (a) 16. and 18. and 71.255 (2) (d) 1., “interest expenses” means interest that would otherwise be deductible under section 163 of the Internal Revenue Code, as adjusted under s. 71.45 (2).

71.42(2) (2) 

71.42(2)(j) (j)

71.42(2)(j)1. 1. For taxable years beginning after December 31, 2013, and before January 1, 2017, “Internal Revenue Code” means the federal Internal Revenue Code as amended to December 31, 2013, except as provided in subds. 2. to 4. and subject to subd. 5.

71.42(2)(j)2. 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, 2013: 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; sections 15303 and 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; and sections 104, 318, 322, 323, 324, 326, 327, and 411 of P.L. 112-240.

71.42(2)(j)3. 3. For purposes of this paragraph, “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 the following federal public laws:

71.42(2)(j)3.a. a. P.L. 113-97.

71.42(2)(j)3.b. b. P.L. 113-159.

71.42(2)(j)3.c. c. P.L. 113-168.

71.42(2)(j)3.d. d. Section 302901 of P.L. 113-287.

71.42(2)(j)3.e. e. Sections 171, 172, and 201 to 221 of P.L. 113-295.

71.42(2)(j)3.f. f. Sections 102, 105, and 207 of division B of P.L. 113-295.

71.42(2)(j)3.g. g. P.L. 114-14.

71.42(2)(j)3.h. h. P.L. 114-26.

71.42(2)(j)3.i. i. Section 2004 of P.L. 114-41.

71.42(2)(j)3.j. j. Sections 503 and 504 of P.L. 114-74.

71.42(2)(j)3.k. k. Sections 103, 104, 124, 168, 184, 185, 190, 204, 303, 306, 336, and 341 of division Q of P.L. 114-113.

71.42(2)(j)3.L. L. P.L. 114-239.

71.42(2)(j)3.m. m. Sections 101 (m), (n), (o), (p), and (q), 104 (a), and 109 of division U of P.L. 115-141.

71.42(2)(j)3.n. n. Section 102 of division M and sections 110, 111, and 116 (b) of division O of P.L. 116-94.

71.42(2)(j)4. 4. For purposes of this paragraph, “Internal Revenue Code” does not include section 847 of the federal Internal Revenue Code.

71.42(2)(j)5. 5. 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.

71.42(2)(k) (k)

71.42(2)(k)1. 1. For taxable years beginning after December 31, 2016, and before January 1, 2018, “Internal Revenue Code” means the federal Internal Revenue Code as amended to December 31, 2016, except as provided in subds. 2. to 4. and s. 71.98, and subject to subd. 5.

71.42(2)(k)2. 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, 2016: 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; section 104 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; 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; and sections 112, 123, 125 to 128, 143, 144, 151 to 153, 165 to 167, 169 to 171, 189, 191, 326, and 411 of division Q of P.L. 114-113.

71.42(2)(k)3. 3. For purposes of this paragraph, “Internal Revenue Code” does not include amendments to the federal Internal Revenue Code, including provisions of federal public laws that directly or indirectly affect the 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; section 102 of division M and sections 110, 111, and 116 (b) of division O of P.L. 116-94; and section 9707 of P.L. 117-2.

71.42(2)(k)4. 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 as follows:

71.42(2)(k)4.a. a. Changes made by section 4007 (b) of P.L. 114-41, section 1102 of P.L. 114-74, and sections 105, 111, 113 to 115, 133, 301, 302, 304, 305, 308, 311, 313 to 323, 325, 331, and 343 to 345 of division Q of P.L. 114-113 first apply for taxable years beginning after December 31, 2016.

71.42(2)(k)4.b. b. Changes made by section 1201 of P.L. 108-173 and section 307 of P.L. 109-432 first apply for taxable years beginning after December 31, 2010.

71.42(2)(k)5. 5. For purposes of this paragraph, “Internal Revenue Code” does not include section 847 of the federal Internal Revenue Code.

71.42(2)(L) (L)

71.42(2)(L)1. 1. For taxable years beginning after December 31, 2017, and before January 1, 2021, “Internal Revenue Code” means the federal Internal Revenue Code as amended to December 31, 2017, except as provided in subds. 2. to 4. and s. 71.98, and subject to subd. 5.

71.42(2)(L)2. 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, 2017: 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; section 104 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, 1251, 1501, and 1502 of division B of P.L. 111-5; sections 211, 212, 213, 214, and 216 of P.L. 111-226; section 2122 of P.L. 111-240; sections 754 and 760 of P.L. 111-312; sections 104, 318, 322, 323, 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, 326, and 411 of division Q of P.L. 114-113; and 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.

71.42(2)(L)3. 3. For purposes of this paragraph, “Internal Revenue Code” does not include amendments to the federal Internal Revenue Code, including provisions of federal public laws that directly or indirectly affect the 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; 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; and sections 9701, 9702, 9703, 9704, 9705, 9706, and 9707 of P.L. 117-2.

71.42(2)(L)4. 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 as follows:

71.42(2)(L)4.a. a. 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.

71.42(2)(L)4.b. b. Changes made by section 1201 of P.L. 108-173 and section 307 of P.L. 109-432 first apply for taxable years beginning after December 31, 2010.

71.42(2)(L)4.c. c. Changes made by section 13113 of P.L. 103-66; section 1241 of division B of P.L. 111-5; section 2011 of P.L. 111-240; section 753 of P.L. 111-312; and section 324 of P.L. 112-240 first apply for taxable years beginning after December 31, 2018.

71.42(2)(L)5. 5. For purposes of this paragraph, “Internal Revenue Code” does not include section 847 of the federal Internal Revenue Code.

71.42(2)(m) (m)

71.42(2)(m)1. 1. For taxable years beginning after December 31, 2020, and before January 1, 2023, “Internal Revenue Code” 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.

71.42(2)(m)2. 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: 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; section 104 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, 1251, 1501, and 1502 of division B of P.L. 111-5; sections 211, 212, 213, 214, and 216 of P.L. 111-226; section 2122 of P.L. 111-240; sections 754 and 760 of P.L. 111-312; sections 104, 318, 322, 323, 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, 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), (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.

71.42(2)(m)3. 3. For purposes of this paragraph, “Internal Revenue Code” does not include amendments to the federal Internal Revenue Code, including provisions of federal public laws that directly or indirectly affect the Internal Revenue Code, enacted after December 31, 2020, except that “Internal Revenue Code” includes sections 9671, 9701, 9702, 9703, 9704, 9705, 9706, and 9707 of P.L. 117-2; and sections 80501, 80504, and 80602 of division H of P.L. 117-58.

71.42(2)(m)4. 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 as follows:

71.42(2)(m)4.a. a. 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.

71.42(2)(m)4.b. b. Changes made by section 1201 of P.L. 108-173 and section 307 of P.L. 109-432 first apply for taxable years beginning after December 31, 2010.

71.42(2)(n) (n)

71.42(2)(n)1. 1. For taxable years beginning after December 31, 2022, “Internal Revenue Code” means the federal Internal Revenue Code as amended to December 31, 2022, except as provided in subds. 2. and 3. and s. 71.98, and subject to subd. 4.

71.42(2)(n)2. 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, 2022: 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; section 104 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, 1251, 1501, and 1502 of division B of P.L. 111-5; sections 211, 212, 213, 214, and 216 of P.L. 111-226; section 2122 of P.L. 111-240; sections 754 and 760 of P.L. 111-312; sections 104, 318, 322, 323, 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, 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), (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; sections 111, 114, 115, 116, 118 (a) and (d), 133, 137, 138, and 210 of division EE of P.L. 116-260; sections 5003, 9041, 9673, 9675, and 9708 of P.L. 117-2; section 307 of division P of P.L. 117-103; section 13903 (b) of P.L. 117-169; and section 4151 of division FF of P.L. 117-328.

71.42(2)(n)3. 3. For purposes of this paragraph, “Internal Revenue Code” does not include amendments to the federal Internal Revenue Code, including provisions of federal public laws that directly or indirectly affect the Internal Revenue Code, enacted after December 31, 2022.

71.42(2)(n)4. 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 as follows:

71.42(2)(n)4.a. a. Changes made by sections 5001, 5002, 5005, 9623, 9624, and 9672 of P.L. 117-2; section 2 of P.L. 117-6; and sections 80401, 80402, and 80601 of division H of P.L. 117-58 apply for taxable years beginning after December 31, 2022.

71.42(2)(n)4.b. b. Changes made by section 1201 of P.L. 108-173 and section 307 of P.L. 109-432 apply for taxable years beginning after December 31, 2010.

71.42(2m) (2m) Notwithstanding sub. (2), a qualified retirement fund for a taxable year for federal income tax purposes is a qualified retirement fund for the taxable year for purposes of this subchapter.

71.42(2p) (2p) For purposes of s. 71.42 (2) (b), 2013 stats., “Internal Revenue Code” includes section 109 of division U of P.L. 115-141.

71.42(2s) (2s) “Last day prescribed by law” has the meaning given in s. 71.738.

71.42(3) (3) “Life insurance” includes annuities.

71.42(3c) (3c) For purposes of s. 71.45 (2) (a) 16. and 18., “management fees” include expenses and costs, not including interest expenses, pertaining to accounts receivable, accounts payable, employee benefit plans, insurance, legal matters, payroll, data processing, purchasing, taxation, financial matters, securities, accounting, or reporting and compliance matters or similar activities, to the extent that the amounts would otherwise be deductible in determining net income under the Internal Revenue Code as adjusted under s. 71.45 (2).

71.42(3d) (3d) “Member” does not include a member of a limited liability company treated as a corporation under s. 71.22 (1k).

71.42(3h) (3h) “Partner” does not include a partner of a publicly traded partnership treated as a corporation under s. 71.22 (1k).

71.42(3m) (3m) “Pay” means mail or deliver funds to the department or, if the department prescribes another method of payment or another destination, use that other method or submit to that other destination.

71.42(4) (4) “Person” includes corporations, unless the context requires otherwise.

71.42(4d) (4d) “Qualified real estate investment trust” has the meaning given in s. 71.22 (9ad).

71.42(4m) (4m) “Related entity” means any person related to a taxpayer as provided under section 267 or 1563 of the Internal Revenue Code during all or a portion of the taxpayer’s taxable year and any real estate investment trust under section 856 of the Internal Revenue Code, except a qualified real estate investment trust, if more than 50 percent of any class of the beneficial interests or shares of the real estate investment trust are owned directly, indirectly, or constructively by the taxpayer, or any person related to the taxpayer, during all or a portion of the taxpayer’s taxable year. For purposes of this subsection, the constructive ownership rules of section 318 (a) of the Internal Revenue Code, as modified by section 856 (d) (5) of the Internal Revenue Code, shall apply in determining the ownership of stock, assets, or net profits of any person.