Iowa Code Title X. Financial Resources [Chs. 421-454] § 450.37. Value for computing the tax

1. Unless the value has been determined under chapter 450B, the tax shall be computed based upon one of the following:

2. Fair market value of real estate in the ordinary course of trade shall be established by agreement, including an agreement to accept the values as finally determined for federal estate tax purposes. The agreement shall be between the department of revenue, the personal representative, and the persons who have an interest in the property.

3. In addition to the applicable period of limitation for examination and determination, the department shall make an examination to adjust the value of real property for Iowa inheritance tax purposes to the value accepted by the internal revenue service for federal estate tax purposes. The department shall make an examination and adjustment for the value of the real property at any time within six months from the date of receipt by the department of written notice from the personal representative for the estate that all federal estate tax matters between the estate and the internal revenue service have been concluded. To begin the running of the six-month period, the notice shall be in writing in a form sufficient to inform the department of the final disposition of the federal estate tax obligation with the internal revenue service and a copy of the federal document showing the final disposition and final federal adjustments of all real property values must be attached. The department shall make an adjustment to the value of real property for inheritance tax purposes to the value accepted for federal estate tax purposes regardless of whether an inheritance clearance has been issued, an appraisal has been obtained on the real property indicating a contrary value, whether there has been an acceptance of another value for real property by the department, or whether an agreement has been entered into by the department and the personal representative for the estate and persons having an interest in the real property regarding the value of the real property. Notwithstanding the period of limitation specified in section 450.94, subsection 3, the personal representative for the estate shall have six months from the day of final disposition of any real property valuation matter between the personal representative for the estate and the internal revenue service to claim a refund of an overpayment of tax due to the change in the valuation of real property by the internal revenue service.