(a) In general. Section 2056(b)(6) provides that an interest in property passing from a decedent to his surviving spouse, which consists of proceeds held by an insurer under the terms of a life insurance, endowment, or annuity contract, is a “deductible interest” to the extent that is satisfied all five of the following conditions (see paragraph (b) of this section if one or more of the conditions is satisfied as to only a portion of the proceeds):

(1) The proceeds, or a specific portion of the proceeds, must be held by the insurer subject to an agreement either to pay the entire proceeds or a specific portion thereof in installments, or to pay interest thereon, and all or a specific portion of the installments or interest payable during the life of the surviving spouse must be payable only to her.

(2) The installments or interest payable to the surviving spouse must be payable annually, or more frequently, commencing not later than 13 months after the decedent's death.

(3) The surviving spouse must have the power to appoint all or a specific portion of the amounts so held by the insurer to either herself or her estate.

(4) The power in the surviving spouse must be exercisable by her alone and (whether exercisable by will or during life) must be exercisable in all events.

(5) The amounts or the specific portion of the amounts payable under such contract must not be subject to a power in any other person to appoint any part thereof to any person other than the surviving spouse.

(b) Specific portion; deductible interest. If the right to receive interest or installment payments or the power of appointment passing to the surviving spouse pertains only to a specific portion of the proceeds held by the insurer, the marital deduction is allowed only to the extent that the rights of the surviving spouse in the specific portion meet the five conditions described in paragraph (a) of this section. While the rights to interest, or to receive payment in installments, and the power must coexist as to the proceeds of the same contract, it is not necessary that the rights to each be in the same proportion. If the rights to interest meeting the required conditions set forth in paragraph (a) (1) and (2) of this section extend over a smaller share of the proceeds than the share with respect to which the power of appointment requirements set forth in paragraph (a) (3) through (5) of this section are satisfied, the deductible interest is limited to the smaller share. Similarly, if the portion of the proceeds payable in installments is a smaller portion of the proceeds than the portion to which the power of appointment meeting such requirements relates, the deduction is limited to the smaller portion. In addition, if a power of appointment meeting all the requirements extends to a smaller portion of the proceeds than the portion over which the interest or installment rights pertain, the deductible interest cannot exceed the value of the portion to which such power of appointment applies. Thus, if the contract provides that the insurer is to retain the entire proceeds and pay all of the interest thereon annually to the surviving spouse and if the surviving spouse has a power of appointment meeting the specifications prescribed in paragraph (a) (3) through (5) of this section, as to only one-half of the proceeds held, then only one-half of the proceeds may be treated as a deductible interest. Correspondingly, if the rights of the spouse to receive installment payments or interest satisfying the requirements extend to only one-fourth of the proceeds and a testamentary power of appointment satisfying the requirements of paragraph (a) (3) through (5) of this section extends to all of the proceeds, then only one-fourth of the proceeds qualifies as a deductible interest. Further, if the surviving spouse has no right to installment payments (or interest) over any portion of the proceeds but a testamentary power of appointment which meets the necessary conditions over the entire remaining proceeds, then none of the proceeds qualifies for the deduction. In addition, if, from the time of the decedent's death, the surviving spouse has a power of appointment meeting all of the required conditions over three-fourths of the proceeds and the right to receive interest from the entire proceeds, but with a power in another person to appoint one-half of the entire proceeds, the value of the interest in the surviving spouse over only one-half of the proceeds will qualify as a deductible interest.

(c) Applicable principles. (1) The principles set forth in paragraph (c) of § 20.2056(b)-5 for determining what constitutes a “specific portion of the entire interest” for the purpose of section 2056(b)(5) are applicable in determining what constitutes a “specific portion of all such amounts” for the purpose of section 2056(b)(6). However, the interest in the proceeds passing to the surviving spouse will not be disqualified by the fact that the installment payments or interest to which the spouse is entitled or the amount of the proceeds over which the power of appointment is exercisable may be expressed in terms of a specific sum rather than a fraction or a percentage of the proceeds provided it is shown that such sums are a definite or fixed percentage or fraction of the total proceeds.

(2) The provisions of paragraph (a) of this section are applicable with respect to a property interest which passed from the decedent in the form of proceeds of a policy of insurance upon the decedent's life, a policy of insurance upon the life of a person who predeceased the decedent, a matured endowment policy, or an annuity contract, but only in case the proceeds are to be held by the insurer. With respect to proceeds under any such contract which are to be held by a trustee, with power of appointment in the surviving spouse, see § 20.2056(b)-5. As to the treatment of proceeds not meeting the requirements of § 20.2056(b)-5 or of this section, see § 20.2056(a)-2.

(3) In the case of a contract under which payments by the insurer commenced during the decedent's life, it is immaterial whether or not the conditions in subparagraphs (1) through (5) of paragraph (a) of this section were satisfied prior to the decedent's death.

(d) Payments of installments or interest. The conditions in subparagraphs (1) and (2) of paragraph (a) of this section relative to the payments of installments or interest to the surviving spouse are satisfied if, under the terms of the contract, the spouse has the right exercisable annually (or more frequently) to require distribution to herself of installments of the proceeds or a specific portion thereof, as the case may be, and otherwise such proceeds or interest are to be accumulated and held by the insurer pursuant to the terms of the contract. A contract which otherwise requires the insurer to make annual or more frequent payments to the surviving spouse following the decedent's death, will not be disqualified merely because the surviving spouse must comply with certain formalities in order to obtain the first payment. For example, the contract may satisfy the conditions in subparagraphs (1) and (2) of paragraph (a) of this section even though it requires the surviving spouse to furnish proof of death before the first payment is made. The condition in paragraph (a)(1) of this section is satisfied where interest on the proceeds or a specific portion thereof is payable, annually or more frequently, for a term, or until the occurrence of a specified event, following which the proceeds or a specific portion thereof are to be paid in annual or more frequent installments.

(e) Powers of appointment. (1) In determining whether the terms of the contract satisfy the conditions in subparagraph (3), (4), or (5) of paragraph (a) of this section relating to a power of appointment in the surviving spouse or any other person, the principles stated in § 20.2056(b)-5 are applicable. As stated in § 20.2056(b)-5, the surviving spouse's power to appoint is “exercisable in all events” only if it is in existence immediately following the decedent's death, subject, however, to the operation of § 20.2056(b)-3 relating to interests conditioned on survival for a limited period.

(2) For examples of formal limitations on the power which will not disqualify the contract, see paragraph (g)(4) of § 20.2056(b)-5. If the power is exercisable from the moment of the decedent's death, the contract is not disqualified merely because the insurer may require proof of the decedent's death as a condition to making payment to the appointee. If the submission of proof of the decedent's death is a condition to the exercise of the power, the power will not be considered “exercisable in all events” unless in the event the surviving spouse had died immediately following the decedent, her power to appoint would have been considered to exist at the time of her death, within the meaning of section 2041(a)(2). See paragraph (b) of § 20.2041-3.

(3) It is sufficient for the purposes of the condition in paragraph (a)(3) of this section that the surviving spouse have the power to appoint amounts held by the insurer to herself or her estate if the surviving spouse has the unqualified power, exercisable in favor of herself or her estate, to appoint amounts held by the insurer which are payable after her death. Such power to appoint need not extend to installments or interest which will be paid to the spouse during her life. Further, the power to appoint need not be a power to require payment in a single sum. For example, if the proceeds of a policy are payable in installments, and if the surviving spouse has the power to direct that all installments payable after her death be paid to her estate, she has the requisite power.

(4) It is not necessary that the phrase “power to appoint” be used in the contract. For example, the condition in paragraph (a)(3) of this section that the surviving spouse have the power to appoint amounts held by the insurer to herself or her estate is satisfied by terms of a contract which give the surviving spouse a right which is, in substance and effect, a power to appoint to herself or her estate, such as a right to withdraw the amount remaining in the fund held by the insurer, or a right to direct that any amount held by the insurer under the contract at her death shall be paid to her estate.