be treated as a qualified taxpayer if each spouse filed a separate return. (C) Denial of double benefit If the taxpayer elects the application of this subsection for any taxable year, no deduction (other than the deduction allowed under paragraph (1)) shall be allowable under this chapter to the taxpayer with respect to any amount paid or incurred during such taxable year with respect to any artistic trade or business carried on by the taxpayer. (D) Regulations The Secretary shall prescribe such regulations or other guidance as the Secretary determines to be necessary or appropriate to carry out the purposes of this subsection. . (b) Effective date The amendments made by this section shall apply to taxable years beginning after the date of the enactment of this Act.