A bill to provide that the crediting of an overpayment of income tax to estimated tax liability shall be determined without regard to Revenue Ruling 83-111.

Provides that the crediting of an overpayment of income tax to estimated tax liability shall be determined without regard to Revenue Ruling 83-111 (holding that the period of underpayment of estimated tax runs from the due date of the installment of the estimated tax to the date the election to apply the overpayment is made).