OPINION OF THE COURT
The decedent, Harry Alexander Cohen, and respondent Rae Cohen, an elderly, childless married couple, executed mutual wills on April 15, 1982. Each will established a trust for the life of the surviving spоuse consisting of that portion of the testator’s estate "equal to the largest amount that can pass free of Federal estate tax by reason of the unified credit and the Stаte death tax credit”, with the corpus to be distributed upon the surviving spouse’s death among named relatives of the decedent and Mrs. Cohen in specified percentages, result *152 ing in an equal division of the trust property between the decedent’s family and Mrs. Cohen’s family. Each will devised the residue of the testator’s estate to the surviving spouse, absolutely.
At the time they executed their wills, the decedent and Mrs. Cohen also entered into a written agreement making each of their wills irrevocable except upon the consent of the other spouse. The agreement recited that the parties had simultaneously executed wills effectively bequeathing their respective estates one half to the decedent’s relatives and one half to Mrs. Cohen’s relatives, and that they intended the wills to be permanently reciprocal so that the will of the survivor could not be changed after the first of them died. The agreement specifically provided that neither party could revoke or alter that party’s will without the written assent of the other and that any such unassented to (by both parties) revocation or alteration would not be effective as against the legatees named in that will. In another provision, the Cohens agreed that any inter vivas gift to a legatee by the surviving spouse was to be deemed an advancement on the legacy of that donee under the survivor’s will and that "every legatee [named in their wills] is hereby made a third party beneficiary of this Agreement”.
Decedent died in December 1986, survived by Mrs. Cohen. She applied for and was issued letters of administration, based upon her sworn statement that she was unable to find a will of decedent despite diligent search and inquiry. Petitioner, a nephew of decedent and a legatee, coexecutor and cotrustee under the decedent’s April 1982 will, then brought a procеeding to revoke the letters of administration and to probate a conformed copy of the decedent’s April 1982 will as a lost will or, in the alternative, to enforce speсific performance of the Cohens’ agreement executed with that will.
After trial of the outstanding factual issues, Surrogate’s Court found that petitioner’s evidence was insufficient to overcome the presumption of revocation by the testator that attaches to a lost will (see, SCPA 1407;
Matter of Fox,
On Mrs. Cohen’s appeal to the Appellate Division, the entire Court agreed with Surrogate’s Court’s dеnial of probate to the copy of the decedent’s April 1982 will because of petitioner’s failure to overcome the presumption of revocation (
Surrogate’s Court found, and the Appellate Division affirmed unanimously, that petitioner’s proof did not overcome the presumption that the decedent had duly revoked the April 1982 will. That finding is not contested and is, therefore, сonclusive on these cross appeals. In our view, that finding, in effect, that decedent had revoked his April 1982 will, precludes enforcement of the Cohens’ contemporaneоus agreement through the imposition of a constructive trust on all or any portion of the decedent’s estate — which Mrs. Cohen took, not through the decedent’s will, but as his sole heir in intestacy.
In each of our cases relied upon by Surrogate’s Court and the majority at the Appellate Division, in which the court’s equity power was invoked to enforce an express or implied
*154
agreement to make mutual or joint wills irrevocable
(see, Glass v Battista,
The basis in each of our cases for enforcing the agreement against the surviving party or the survivor’s estate by the imposition of a constructive trust is clearly that equity will not permit the surviving party to accept the benefits of the performance of the аgreement by the first decedent and then to breach the agreement by disposing of the parties’ estates in a manner inconsistent with their agreement. Thus, in
Tutunjian v Vetzigian (supra)
we expressed the underlying rationale as follows: "[T]o permit the one who survives
to gain the benefits of the joint will
and then to
flout its provisions
in violation of the promise made to the other 'would be a mockery of justice’.
(Mutual Life Ins. Co.
v.
Holloday,
In the instant сase, the findings of the courts below that decedent’s will had been revoked establish that Mrs. Cohen did not reap the benefits of the decedent’s performance of their agreemеnt to make their mutual wills irrevocable. Indeed, Mrs. Cohen’s taking of the decedent’s entire estate was as a result of the revocation of a will that had been covered by their agrеement. Consequently, the affirmed findings in this case cannot support the conclusion that Mrs. Cohen would be unjustly enriched by having unrestricted discretion to dispose of her and her husband’s estate. Hеnce, there is no basis here for invoking a court’s equity power to control such discretion.
*155
Our conclusion that a constructive trust may not be imposed upon the estate Mrs. Cohen tоok by intestacy is unaffected by the designation in the Cohens’ agreement of petitioner and the other legatees named in their wills as third-party beneficiaries of that agreement. In thеir agreement, the Cohens each reserved the right to revoke his or her will with the assent of the other spouse. There is no claim here of any detrimental reliance upon the agreement by any legatee. At the latest, Mrs. Cohen effectively manifested her assent to the revocation of the decedent’s April 1982 will when she applied for letters of administration of his estate, and thereby precluded the third-party beneficiaries from asserting any vested rights under the Cohens’ agreement
(see, Salesky v Hat Corp.,
Accordingly, the order of the Appellate Division should be reversed, the petition dismissed, and the certified question answered in the negative, with costs to all parties appearing separately and filing separate briefs payable out of the estate.
Chief Judge Kaye and Judges Simons, Bellacosa, Smith and Ciparick concur; Judge Titone taking no part.
Order reversed, etc.
