26 U.S.C. § 6157: Payment of Federal unemployment tax on quarterly or other time period basis

if the person is such an employer for the preceding calendar year (determined by only taking into account wages paid and employment during such preceding calendar year), compute the tax imposed by section 3301 for each of the first 3 calendar quarters in the calendar year on wages paid for services with respect to which the person is such an employer for such preceding calendar year (as so determined), and for the period beginning with the first day of the calendar year and ending with the last day of the calendar quarter (excluding the last calendar quarter) in which such person becomes such an employer with respect to such services, and for the third calendar quarter of such year, if the period specified in subparagraph (A) includes only the first two calendar quarters of the calendar year. The tax for any calendar quarter or other period referred to in paragraph (1) or (2) of subsection (a) shall be computed by multiplying the amount of wages (as defined in section 3306(b)) paid in such calendar quarter or other period by 0.6 percent. In the case of wages paid in any calendar quarter or other period during a calendar year to which paragraph (1) of section 3301 applies, the amount of such wages shall be multiplied by 0.8 percent in lieu of 0.6 percent. Nothing in this section shall require the payment of tax with respect to any calendar quarter or other period if the tax under section 3301 for such period, plus any unpaid amounts for prior periods in the calendar year, does not exceed $100. Notwithstanding any other provision of law, if a qualified taxpayer is required to pay additional taxes for taxable years beginning in 1991 with respect to any employment in any State by reason of such State being declared a credit reduction State, such taxpayer may elect to defer the filing and payment of such additional taxes to a date no later than June 30, 1992 . Notwithstanding subsection (a), for purposes of section 6601(a) of the Internal Revenue Code of 1986, the last date prescribed for payment of any additional taxes for which an election is made under subsection (a) shall be January 31, 1992 . in a State which has been declared a credit reduction State for taxable years beginning in 1991, and who did not receive notice of such credit reduction before December 1, 1991 from either the State unemployment compensation agency or the Internal Revenue Service. The term ‘credit reduction State’ means a State with respect to which the Internal Revenue Service has determined that a reduction in credits is applicable for taxable years beginning in 1991 pursuant to the provisions of section 3302 of the Internal Revenue Code of 1986. An election under this section shall be made at such time and in such manner as the Secretary of the Treasury shall prescribe.”