Iowa Code Title X. Financial Resources [Chs. 421-454] § 450.6. Accrual of tax--maturity--extension of time

1. The tax imposed by this chapter accrues at the death of the decedent owner, and shall be paid to the department of revenue on or before the last day of the ninth month after the death of the decedent owner except if otherwise provided in this chapter. If in the opinion of the director of revenue additional time should be granted for payment to avoid hardship, the director may extend the period to a date not exceeding ten years from the last day of the month in which the death of the decedent occurred. In the case of an extension the tax bears interest at the rate in effect under section 421.7 from the expiration of the last day of the ninth month after the decedent's death. Interest shall be computed on a monthly basis with a fraction of a month counted as a full month.

2. Upon the approval of the executive council, the tax liability of a beneficiary, heir, surviving joint tenant, or other transferee may be paid, in lieu of money, in whole or in part by the transfer of real property or tangible personal property to the state or a political subdivision of the state to be used for public purposes. Before the tax liability may be paid by transfer of property to a political subdivision, the governing body of the political subdivision shall also approve the transfer. The property transferred in payment of tax shall have been included in the decedent's gross estate for inheritance tax purposes and its value for the payment of the tax shall be the same as its value for inheritance tax purposes. The acceptance or rejection of the property in payment of the tax liability and the value of the property shall be certified by the executive council to the director of revenue. The acceptance of the property transferred acts as payment and satisfaction of the inheritance tax liability to the extent of the value of the transferred property, but notwithstanding any other provision, the taxpayer is not entitled to a refund if the transferred property has a value in excess of the tax liability.