Final answer:
Under the first scenario, no estate tax is due from Harold's estate, while under the second scenario, the estate tax due from Harold's estate would be $2,800,000.
Step-by-step explanation:
Under the assumption that neither Harold nor Maude made any taxable gifts before this year, no estate tax would be due from Harold's estate. This is because Harold inherited Maude's estate through the marital deduction, which allows for the transfer of unlimited assets between spouses tax-free. Therefore, Harold's estate would not be subject to any estate tax.
Under the assumption that Harold and Maude each made a $1 million taxable gift in 2011 and offset the gift tax at that time with the applicable credit, the estate tax due from Harold's estate would be $2,800,000. This is because the taxable gift would use a portion of the estate tax exemption, leaving $24.20 million subject to the estate tax. The estate tax rate for this amount is 40%, resulting in a tax liability of $9,680,000. However, since Harold's estate can claim the portability election and use Maude's unused exemption, the taxable estate is reduced to $24.20 million, resulting in a tax liability of $2,800,000.