If a corporation has a recovery of a foreign expropriation loss to which section 1351 applies and if an election is not made under subsection (a), the Secretary may, upon finding that the payment of the tax attributable to such recovery at the time otherwise provided in this subtitle would result in undue hardship, extend the time for payment of such tax for a reasonable period or periods not in excess of 9 years from the date on which such tax is otherwise payable.
If an election is made under subsection (a), and a deficiency attributable to the recovery of a foreign expropriation loss has been assessed, the deficiency shall be prorated to such installments. The part of the deficiency so prorated to any installment the date for payment of which has not arrived shall be collected at the same time as, and as part of, such installment. The part of the deficiency so prorated to any installment the date for payment of which has arrived shall be paid upon notice and demand from the Secretary. This subsection shall not apply if the deficiency is due to negligence, to intentional disregard of rules and regulations, or to fraud with intent to evade tax.
If the time for payment for any amount of tax has been extended under this section, interest payable under section 6601 on any unpaid portion of such amount shall be paid annually at the same time as, and as part of, each installment payment of the tax.Interest, on that part of a deficiency prorated under this section to any installment the date for payment of which has not arrived, for the period before the date fixed for the last installment preceding the assessment of the deficiency, shall be paid upon notice and demand from the Secretary.