((a)) ** Authority to make**

((1)) ** In general** If the Secretary finds that—

((A)) a section 501(c)(3) organization has made political expenditures, and

((B)) such expenditures constitute a flagrant violation of the prohibition against making political expenditures,

((2)) ** Computation of tax** In the case of a current taxable year, the Secretary shall determine the taxes for the period beginning on the 1st day of such current taxable year and ending on the date of the determination under paragraph (1) as though such period were a taxable year of the organization, and shall take into account any prior determination made under this subsection with respect to such current taxable year.

((3)) ** Treatment of amounts collected** Any amounts collected as a result of any assessments under this subsection shall, to the extent thereof, be treated as a payment of income tax for such taxable year, or tax under section 4955 with respect to the expenditure, as the case may be.

((4)) ** Section inapplicable to assessments after due date** This section shall not authorize any assessment of tax for the preceding taxable year which is made after the due date of the organization’s return for such taxable year (determined with regard to any extensions).

((b)) ** Definitions and special rules**

((1)) ** Definitions** For purposes of this section, the terms “section 501(c)(3) organization”, “political expenditure”, and “organization manager” have the respective meanings given to such terms by section 4955.

((2)) ** Certain rules made applicable** The provisions of sections 6851(b), 6861(f), and 6861(g) shall apply with respect to any assessment made under subsection (a), except that determinations under section 6861(g) shall be made on the basis of whether the requirements of subsection (a)(1)(B) of this section are met in lieu of whether jeopardy exists.