delivered the opinion of the Court.

The federal estate tax and the federal gift tax, as held in a line of cases ending with Commissioner v. Wemyss, 324 U. S. 303, and Merrill v. Fahs, 324 U. S. 308, are construed in pari materia, since the purpose of the gift tax is to complement the estate tax by preventing tax-free depletion of the transferor’s estate during his lifetime. Both the gift tax1 and the estate tax2 exclude transfers *108made for “an adequate and full consideration in money or money’s worth.” In the estate tax this requirement is limited to deductions for claims based upon “a promise or agreement”;3 but the consideration for the “promise or agreement” may not be the release of marital rights in the decedent’s property.4 In the Wemyss and Merrill cases the question was whether the gift tax was applicable to premarital property settlements. If the standards of the estate tax were to be applied ex proprio vigore in gift tax cases, those transfers would be taxable because there was a “promise or agreement” touching marital rights in property. We sustained the tax, thus giving “adequate and full consideration in money or money’s worth” the same meaning under both statutes insofar as premarital property settlements or agreements are concerned.

The present case raises the question whether Wemyss and Merrill require the imposition of the gift tax in the type of post-nuptial settlement of property rights involved here.

Petitioner divorced her husband, Reginald Wright, in Nevada in 1943. Both she and her husband had substantial property interests. They reached an understanding as respects the unscrambling of those interests, the settlement of all litigated claims to the separate properties, the assumption of obligations, and the transfer of properties.

Wright received from petitioner the creation of a trust for his lifetime of the income from her remainder interest in a then-existing trust; an assumption by her of an in-débtedness of his of $47,650; and her promise to pay him $416.66 a month for ten years.

Petitioner received from Wright 21/90 of certain real property in controversy; a discontinuance of a partition *109suit then pending; an indemnification from and assumption by him of all liability on a bond and mortage on certain real property in London, England; and an indemnification against liability in connection with certain real property in the agreement. It was found that the value of the property transferred to Wright exceeded that received by petitioner by $107,150. The Commissioner assessed a gift tax on the theory that any rights which Wright might have given up by entering into the agreement could not be adequate and full consideration.

If the parties had without 'more gone ahead and voluntarily unravelled their business interests on the basis of this compromise, there would be no question that the gift tax would be payable. For there would have been a “promise or agreement” that effected a relinquishment of marital rights in property. It therefore would fall under the ban of the provision of the estate tax5 which by judicial construction has been incorporated into the gift tax statute.

But the parties did not simply undertake a voluntary contractual division of their property interests. They were faced with the fact that Nevada law not only authorized but instructed the divorce court to decree a just and equitable disposition of both the community and the separate property of the parties.6 The agreement recited that it was executed in order to effect a settlement of the respective property rights of the parties “in the event a divorce *110should be decreed”; and it provided that the agreement should be submitted to the divorce court “for its approval.” It went on to say, “It is of the essence of this agreement that the settlement herein provided for shall not become operative in any manner nor shall any of the Recitals or covenants herein become binding upon either party unless a decree of absolute divorce between the parties shall be entered in the pending Nevada action.”

If the agreement had stopped there and were in fact submitted to the court, it is clear that the gift tax would not be applicable. That arrangement would not be a “promise or agreement” in the statutory sense. It would be wholly conditional upon the entry of the decree; the divorce court might or might not accept the provisions of the arrangement as the measure of the respective obligations ; it might indeed add to or subtract from them. The decree, not the arrangement submitted to the court, would fix the rights and obligations of the parties. That was the theory of Commissioner v. Maresi, 156 F. 2d 929, and we think it sound.

Even the Commissioner concedes that that result would be correct in case the property settlement was litigated in the divorce action. That was what happened in Commissioner v. Converse, 163 F. 2d 131, where' the divorce court decreed a lump-sum award in lieu of monthly payments provided by the separation agreement. Yet without the decree there would be no enforceable, existing agreement whether the settlement was litigated or unliti-gated. Both require the approval of the court before an obligation arises. The happenstance that the divorce court might approve the entire settlement, or modify it in unsubstantial details, or work out material changes seems to us unimportant. In each case it is the decree that creates the rights and the duties; and a decree is not a “promise or agreement” in any sense — popular or statutory.

*111But the present case is distinguished by reason of a further provision in the undertaking and in the decree. The former provided that “the covenants in this agreement shall survive any decree of divorce which may be entered.” And the decree stated “It is ordered that said agreement and said trust agreements forming a part thereof shall survive this decree.” The Court of Appeals turned the case on those provisions. It concluded that since there were two sanctions for the payments and transfers — contempt under the divorce decree and execution under the contract — they were founded not only on the decree but upon both the decree and a “promise or agreement.” It therefore held the excess of the value of the property which petitioner gave her husband over what he gave her to be taxable as a gift. 178 F. 2d 861.

We, however, think that the gift tax statute is concerned with the source of rights, not with the manner in which rights at some distant time may be enforced. Remedies for enforcement will vary from state to state. It is “the transfer” of the property with which the gift tax statute is concerned,7 not the sanctions which the law supplies to enforce transfers. If “the transfer” of marital rights in property is effected by the parties, it is pursuant to a “promise or agreement” in the meaning of the statute. If “the transfer” is effected by court decree, no “promise or agreement” of the parties is the operative fact. In no realistic sense is a court decree a *112“promise or agreement” between the parties to a litigation. If finer, more legalistic lines are to be drawn, Congress must do it.

If, as we hold, the case is free from any “promise or agreement” concerning marital rights in property, it presents no remaining problems of difficulty. The Treasury Regulations8 recognize as tax free “a sale, exchange, or other transfer of property made in the ordinary course of business (a transaction which is bona fide, at arm’s length, and free from any donative intent).” This transaction is not “in the ordinary course of business” in any conventional sense. Few transactions between husband and wife ever would be; and those under the aegis of a divorce court are not. But if two partners on dissolution of the firm entered into a transaction of this character or if chancery did it for them, there would seem to be no doubt that the unscrambling of the business interests would satisfy the spirit of the Regulations. No reason is apparent why husband and wife should be under a heavier handicap absent a statute which brings all marital property settlements under the gift tax.

We are now advised that since submission of the case on October 16, 1950, petitioner has died, and that it will *113take some weeks before an administrator of her estate can be appointed. Accordingly we enter our judgment as of October 16, 1950, in pursuance of the practice obtaining in those circumstances. See Mitchell v. Overman, 103 U. S. 62, 64-65; McDonald v. Maxwell, 274 U. S. 91, 99.

Reversed.

Section 503 of the Revenue Act of 1932 imposes a gift tax on property “transferred for less than an adequate and full consideration in money or money’s worth.” 47 Stat. 247, now I. R. C., § 1002, 26 U. S. C. § 1002. In Merrill v. Fahs, 324 U. S. 308, the Court held that an antenuptial settlement is subject to this tax.1 Believing as I do that the disposition of the case before us largely depends on the weight given to the considerations which there prevailed, recapitulation of them is appropriate. The Court there based its result on the conclusion that a transfer of property pursuant to an antenuptial settlement was not made in exchange for “an adequate and full consideration in money or money’s worth.” This conclusion was reinforced by reading into the gift tax provision the gloss of the interrelated estate tax of the same year that the relinquishment of “marital rights . . . *114shall not be considered to any extent a consideration in money or money’s worth.’ ” Revenue Act of 1932, § 804, 47 Stat. 280, now I. R. C., § 812 (b), 26 U. S. C. § 812 (b).

The case before us concerns not an antenuptial agreement, but what the Tax Court called a “property settlement agreement,” contracted in anticipation of divorce. Each spouse transferred property of substantial value to the other and each agreed “to release completely the property of the other from all claims arising but of their marriage.” 10 T. C. 741, 743.

Unless we are now to say that a settlement of property in winding up, as it were, a marriage, smacks more of a business arrangement than an antenuptial agreement and therefore satisfies the requirement of “an adequate and full consideration in money or money’s worth” which we found wanting in Merrill v. Fahs, and unless we are further to overrule Merrill v. Fahs insofar as it joined the gift tax and the estate tax of the Revenue Act of 1932, so as to infuse into the gift tax the explicitness of the estate tax in precluding the surrender of marital rights from being deemed to any extent a consideration “in money or money’s worth,” we must hold that a settlement of property surrendering marital rights in anticipation of divorce is not made for “an adequate and full consideration in money or money’s worth.”

The same year that it enacted the gift tax Congress amended the estate tax by adding to the provision that “adequate and full consideration” was prerequisite to deduction of “claims against the estate” the phrase, “when founded upon a promise or agreement.” Revenue Act of 1932, § 805,47 Stat. 280, now I. R. C., § 812 (b), 26 U. S. C. § 812 (b). Legislative history demonstrates that this amendment was intended not to change the law but to make clear that the requirement of consideration did not prevent “deduction of liabilities imposed by law or arising out of torts.” H. R. Rep. No. 708, 72d Cong., 1st Sess. 48: *115S. Rep. No. 665, 72d Cong., 1st Sess. 51. A similar principle is implicit in the gift tax. By its statutory language and authoritative commentaries thereon Congress did not leave the incidence of the gift tax at large by entrusting its application to the play of subtleties necessary to finding a “donative intent.” Commissioner v. Wemyss, 324 U. S. 303, 306. But while by the gift tax Congress meant “to hit all the protean arrangements which the wit of man can devise that are not business transactions” to the common understanding, Commissioner v. Wemyss, ibid., a gift tax is an exaction which does presuppose the voluntary transfer of property and not a transfer in obedience to law. In Merrill v. Fahs, supra, at 313, we stated that “to interpret the same phrases in the two taxes concerning the same subject matter in different ways where obvious reasons do not compel divergent treatment is to introduce another and needless complexity into this already irksome situation.” Application of that principle would require the Court to hold that § 503 of the Revenue Act of 1932, I. R. C., § 1002, imposes a tax on “the amount by which the value of the property [transferred exceeds] the value of the consideration” received only when the transfer is “founded upon a promise or agreement.” The taxpayer does not contest applicability of the principle; and in the view we take of the case it may be assumed.2 Taxpayer contends (1) that the transfers in the situation now before us were or must be deemed to have been for an “adequate and full consideration in money or money’s worth,” and (2) that the Commissioner imposed a liability which *116was not “founded upon a promise or agreement.” Her position was sustained by the Tax Court, 10 T. C. 741, but rejected by the Court of Appeals for the Second Circuit. 178 F. 2d 861.

1. I would adhere to the views we expressed in the Wemyss and Merrill decisions as to the meaning to be given to the requirement of “adequate and full consideration” in the enforcement of the gift tax “in order to narrow the scope of tax exemptions.” 324 U. S. at 312. Nor would I depart from the conclusion there reached that the relinquishment of marital rights is not to be deemed “money or money’s worth” because that definition in the estate tax of 1932 is by implication to be read into the gift tax passed in the same year.

2. But was the transfer of the property here in controversy “founded upon a promise or agreement”? The answer requires recital of the governing facts of the case.

Taxpayer separated from her husband in August, 1942, and shortly thereafter brought suit in Nevada for divorce. One week prior to entry of the divorce decree, she and her husband entered into an agreement “for the purpose of settling the respective property rights of the parties hereto and of removing the subject matter thereof from the field of litigation.” After providing for the transfers of property and the release of claims, the agreement recited,

“This agreement shall be submitted to the court for its approval, but nevertheless the covenants in this agreement shall survive any decree of divorce which may be entered. It is of the essence of this agreement that the settlement herein provided for shall not become operative in any manner nor shall any of the Recitals or covenants herein become binding upon either party unless a decree of absolute divorce between the parties shall be entered in the pending Nevada action. The settlement herein pro*117vided shall become immediately effective and operative in the event of and upon the entry of a decree of divorce between said parties in said pending Nevada action. The parties hereto, however, shall proceed as expeditiously as possible to carry into effect the covenants herein, which it is provided are to be performed by either of the parties prior to the entry of the decree as aforesaid.”

After a hearing at which both parties were represented, the court granted the divorce. It found that certain transfers from the wife to the husband were “in discharge of a legal obligation which, because of the marital relationship has been imposed” on her; and concluded that “the agreement and trust agreements forming a part thereof, made and entered into between plaintiff and defendant under date of.February 27th, 1943 is entitled to be approved.” The divorce decree “approved” the agreement, directed performance of two of its paragraphs, and declared,

“Notwithstanding the approval of said agreement and the trust agreements forming a part thereof by the Court herein, It is ordered that said agreement and said trust agreements forming a part thereof shall survive this decree.

“It is further ordered, adjudged and decreed that the decree herein entered is absolute and final in all respects and the Court herein divests itself of all power to amend or modify the same in the future without the consent of both of the parties hereto.”

The parties executed the provisions of the decree and the agreement, and the Commissioner assessed the tax in question on the amount by which the value of the property transferred by the wife to her husband exceeded the value of the property transferred by him to her.

*1183. Such being the facts of the case, was the transfer by Cornelia Harris “founded upon a promise or agreement”? The statute does not say founded “solely upon a promise or agreement.” The statute does not say that the tax should not fall on “property transferred under the terms of a judgment or decree of the court.” Nor is the phrase “founded upon agreement” a technical term having a well-known meaning either in law or in literature. The question is whether the transfer made by the taxpayer to her husband was, within the fair meaning of the language, “founded” upon her agreement with her husband. Did the Nevada judge in decreeing the divorce describe what actually took place here when he said that on the “date of February 27, 1943, the plaintiff and defendant entered into an agreement and trust agreements forming a part thereof, under the terms of which the parties settled all obligations arising out of their marriage”?

The fact that the undertakings defined by this agreement would come into force only on the occurrence of a condition, to wit, the entering of a decree of divorce, is apparently regarded as decisive of taxability. But does this make any real difference? The terms of that decree might be different from the terms of the agreement; but “nevertheless the covenants in this agreement shall survive any decree of divorce which may be entered.” If the divorce court had disapproved the agreement and had not decreed the transfer of any property of the wife to her husband, it is difficult to see how transfer's which she made, solely because of the compulsion of the agreement, would be effected by court decree and for that reason not subject to tax. The condition on which an agreement comes into force does not supplant the agreement any more than a deed in escrow ceases to be a deed when it comes out of escrow. In the Wemyss and Merrill cases, would the gifts have been any the less founded upon an agreement if, as a condition to the antenuptial arrangements in those cases, *119the consent of the parents of the fiancée had been made a condition of the marriage? Nor can excluding the transfers here involved from the gift tax be made tenable by resting decision on the narrower ground that to the extent the divorce decree “approved” the agreement or embodied its provisions so as to make them enforceable by contempt the transfers were not “founded upon” the agreement within the meaning of the statute.3 If the taxpayer had been sued by her husband for the sums she was obligated to transfer to him could he not have brought the suit on the contract?4 Even though a promise for *120which inadequate consideration was given has been reduced to a judgment, a claim based upon it has been held not deductible from the gross estate and thus must have been deemed to be "founded upon a promise.” Markwell’s Estate v. Commissioner, 112 F. 2d 253. If a transfer does not cease to be “founded upon a promise” when the promise is merged into a judgment, is not a transfer pursuant to an agreement which survives a ratifying decree a fortiori “founded upon”'that agreement?

Judge Learned Hand’s treatment of this matter is so hard-headed and convincing that it would be idle to paraphrase his views.

“In some jurisdictions contracts, made in anticipation of a divorce, are held to persist ex proprio vigore after the divorce decree has incorporated their terms, and has added its sanctions to those available in contract. That, for example, is the law of New York, where the contract remains obligatory even after the court has modified the allowances which it originally adopted; and where the promises will be thereafter enforced by execution and the like. Perhaps, that is also the law of Nevada, which the parties provided should govern 'all matters affecting the interpreta*121tion of this agreement or the rights of the parties.’ Be that as it may, in the case at bar, the Nevada decree having declared that the agreement was ‘entitled to be approved,’ that included the provision that its ‘covenants’ should ‘survive’ as well as any of its other stipulations. Thus the payments made under it were ‘founded’ as much upon the ‘promise or agreement’ as upon the decree; indeed, they were ‘founded’ upon both; the parties chose to submit themselves to two sanctions — contempt under the divorce court and execution under the contract. The payments were therefore subject to the gift tax.” 178 F. 2d 861, 865.

I would affirm the judgment.