Example. D died in 1994. D's will created a trust funded with certain income producing assets included in D's gross estate at $1,000,000. The trust provides that all the income is payable to D's wife, S, for life, remainder to be divided equally among their four children. In computing D's taxable estate, D's executor deducted, pursuant to section 2056(b)(7), $1,000,000. Assume that S received no other property from D and that S died in 1996. Assume further that S made no section 2519 disposition of the property, that the property was included in S's gross estate at a value of $1,080,000, and that S's will contained no provision regarding section 2207A(a). The tax attributable to the property is equal to the amount by which the total Federal estate tax (including penalties and interest) paid by S's estate exceeds the Federal estate tax (including penalties and interest) that would have been paid if S's gross estate had been reduced by $1,080,000. That amount of tax may be recovered by S's estate from the trust. If, at the time S's estate seeks reimbursement, the trust has been distributed to the four children, S's estate is also entitled to recover the tax from the children.
26 C.F.R. §20.2207A-1