71.05 (6) (b) 4. a. If the individual is single and the individual's federal adjusted gross income in the year to which the subtraction relates is less than $20,200, the maximum subtraction is $100 for each week that payments are received or the amount of disability pay reported as income, whichever is less.

b. If the individual is married and filing a joint return and the couple's federal adjusted gross income in the year to which the subtraction relates is less than $20,200, or $25,400 if both spouses are disabled, the maximum subtraction is $100 for each week that payments are received, per spouse if both spouses are disabled, or the amount of disability pay reported as income, whichever is less.

c. If the federal adjusted gross income of the individual, or individuals if filing a joint return, for the taxable year, determined without regard to this subdivision, exceeds $15,000, the amount subtracted under this subdivision for the taxable year shall be reduced by an amount equal to the excess of the federal adjusted gross income over $15,000.

71.05 (6) (b) 19. c. For taxable years beginning before January 1, 2021, for a person who is a nonresident or a part-year resident of this state, modify the amount calculated under subd. 19. b. by multiplying the amount by a fraction the numerator of which is the person's net earnings from a trade or business that are taxable by this state and the denominator of which is the person's total net earnings from a trade or business.

71.05 (6) (b) 19. cm. For taxable years beginning after December 31, 2020, for a person who is a nonresident or a part-year resident of this state, modify the amount calculated under subd. 19. b. by multiplying the amount by a fraction the numerator of which is the person's wages, salary, tips, unearned income, and net earnings from a trade or business that are taxable by this state and the denominator of which is the person's total wages, salary, tips, unearned income, and net earnings from a trade or business. In this subd. 19. cm., for married persons filing separately “wages, salary, tips, unearned income, and net earnings from a trade or business" means the separate wages, salary, tips, unearned income, and net earnings from a trade or business of each spouse, and for married persons filing jointly “wages, salary, tips, unearned income, and net earnings from a trade or business" means the total wages, salary, tips, unearned income, and net earnings from a trade or business of both spouses.

71.05 (6) (b) 19. d. Reduce For taxable years beginning before January 1, 2021, reduce the amount calculated under subd. 19. b. or c. to the person's aggregate net earnings from a trade or business that are taxable by this state.

71.05 (6) (b) 19. dm. For taxable years beginning after December 31, 2020, reduce the amount calculated under subd. 19. b. or cm. to the person's aggregate wages, salary, tips, unearned income, and net earnings from a trade or business that are taxable by this state.

71.05 (6) (b) 54. Except for a payment that is exempt under sub. (1) (a), (am), or (an), or that is exempt as a railroad retirement benefit, for taxable years beginning after December 31, 2020, up to $5,000 of payments or distributions received each year by an individual from a qualified retirement plan under the Internal Revenue Code or from an individual retirement account established under 26 USC 408, if all of the following conditions apply:

a. The individual is at least 65 years of age before the close of the taxable year to which the exemption claim relates.

b. If the individual is single or files as head of household, his or her federal adjusted gross income in the year to which the exemption claim relates is less than $15,000.

c. If the individual is married and is a joint filer, the couple's federal adjusted gross income in the year to which the exemption claim relates is less than $30,000.

d. If the individual is married and files a separate return, the sum of both spouses' federal adjusted gross income in the year to which the exemption claim relates is less than $30,000.

71.07 (5) (a) 15. The amount claimed as a deduction for medical care insurance under section 213 of the Internal Revenue Code that is exempt from taxation under s. 71.05 (6) (b) 17. to 20. 19., 35., 36., 37., 38., 39., 40., 41., and 42. and the amount claimed as a deduction for a long-term care insurance policy under section 213 (d) (1) (D) of the Internal Revenue Code, as defined in section 7702B (b) of the Internal Revenue Code that is exempt from taxation under s. 71.05 (6) (b) 26.

71.07 (9m) (h) Any person, including a nonprofit entity described in section 501 (c) (3) of the Internal Revenue Code, may sell or otherwise transfer the credit under par. (a) 2m. or 3., in whole or in part, to another person who is subject to the taxes imposed under s. 71.02, 71.23, or 71.43, if the person notifies the department of the transfer, and submits with the notification a copy of the transfer documents, and the department certifies ownership of the credit with each transfer. The transferor may file a claim for more than one taxable year on a form prescribed by the department to compute all years of the credit under par. (a) 2m. or 3., at the time of the transfer request. The transferee may first use the credit to offset tax in the taxable year of the transferor in which the transfer occurs and may use the credit only to offset tax in taxable years otherwise allowed to be claimed and carried forward by the original claimant.