A. The Survivor’s Trust ' (“Marital Share”)
The Survivor’s Trust consisted of the surviving spouse’s separate property, the surviving spouse’s interest in the community estate, and the marital deduction property.
1.The Marital Deduction Property
The marital deduction property was defined as “the minimum pecuniary amount necessary to entirely eliminate, or to reduce, to the maximum extent possible, any Federal Estate Tax at the Decedent’s death, taking into account ... [a]ll deductions taken in determining the estate 'tax payable by reason of the Decedent’s death.”
B. The Decedent’s Trust
The Decedent’s Trust consisted of the balance of the trust estate.
Pursuant to the terms of Trust A, the property in the Survivor’s Trust passed to the surviving husband. Additionally, the súrviving husband was entitled to the income from the Decedent’s Trust. The remainder interest in the Decedent’s Trust belonged to the decedent’s two sons.
Trust A authorized payment of death taxes as follows: “Upon the death of either [decedent or her husband], any estate, inheritance, succession or other death taxes ... may be paid from the Trust Estate by the Trustee, in the Trustee’s discretion, unless other adequate provision shall have been made therefor.”
II.The Marguerite B. McKeon Trust (“Trust B”)
The assets in Trust B were the separate property of the decedent. In. addition, the proceeds of an insurance policy purchased by the sons of the decedent on her life were paid into Trust B. The sole beneficiaries of Trust B were the decedent’s two sons.
Trust B included a provision authorizing the trustee to pay death taxes as follows: “Upon the death of the [decedent], any estate, inheritance, succession or other death taxes ... may be paid from the Trust Estate by the Trustee, in the Trustee’s discretion, unless other adequate provision shall have been made therefor.”
III. The Decedent’s Will
In addition to the two trusts, the decedent also executed a “Last Will and Testament.” In particular, the will contained the following direction regarding payment of death taxes:
I hereby direct my Executor to pay ... all estate, inheritance, succession, or other death taxes.... Such payments shall be made out of the assets making up the residue of my estate, without pro-ration_In the event the residuary assets are insufficient to satisfy such obligations, the Executor shall so certify to the then acting Trustee of the said McKEON TRUST, who shall satisfy such obligations from the trust estate.
IV. The Administrative and Judicial Proceedings
In January 1995, the Estate filed a federal estate tax return reporting a total gross estate of $2,028,972 and a net estate tax of $245,961. The Estate also claimed a marital deduction for bequests to the surviving spouse in the amount of $660,912.
The estate tax was paid on January 25, 1995. The tax was paid by the decedent’s two sons out of the proceeds of the life insurance policy. No tax was in fact paid from Trust A.
In July 1995, the Estate filed an administrative claim for refund seeking to recover $163,994 of the estate tax paid. The Estate asserted that it had erroneously included the life insurance proceeds as part of the estate. While the Internal Revenue Service was considering the claim, the Estate filed the instant suit in August 1996. The district court granted summary judgment on this point in favor of the Estate, and this issue.is not relevant on appeal.
In January 1997, the I.R.S. assessed a deficiency of $98,282 against the Estate, and the Government filed a counterclaim in the Estate’s instant suit. It alleged the Estate had overstated the marital deduction under I.R.C. § 2056.