Computation of tax.
(2) Computation of tax. If a termination assessment of the income tax for the current year is made, the income tax for such year shall be computed for the period beginning on the first day of such year and ending on the day of the assessment. A credit shall be allowed for any tax for the taxable year previously assessed under section 6851. The taxpayer is entitled to a deduction for the personal exemptions (as limited in the case of certain non-resident aliens) without any proration for or because of the short taxable period.