delivered the opinion of the Court.
Section 402 of the Revenue Act of 1921, c. 136, 42 Stat. 227, 277, 278, imposing an inheritance tax, provides,
“ Sec. 402. That the value of the gross estate of the decedent shall be determined by including the value at the time of his death of all property, . . .
“(d) To the extent of the interest therein held jointly or as tenants in the entirety by the decedent and any other person, . .
The decedent died in 1923, while the foregoing provision was in effect. At the time of his death he and his wife held as joint tenants certain real estate in Illinois, title to which vested in them by conveyance on October 5, 1909. The commissioner valued this real estate at 890,000, and included the whole of it in the value of decedent’s gross-estate as being within the reach of § 402 (d). Upon appeal to the Board of Tax Appeals, that tribunal, disapproving in part the commissioner’s determination, held that the value of only decedent’s one-half of the property could be included for the purposes of the tax.
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Whether this application of the statute gives it a retroactive effect is the sole question here involved; and with that we find no difficulty. Under the statute the death of decedent is the event in respect of which the tax is laid. It is the existence of the joint tenancy at that time, and not its creation at the earlier date, which furnishes the basis for the tax. By the judgment under review, only half of the value, that is to say, the value of decedent’s interest, has been included, leaving the survivor’s interest unaffected. After the creation of the joint tenancy, and until his death, decedent retained his interest in, and control over, half of .the property. Cessation of that interest and control at death presented the proper occasion for the imposition of a tax. See
Gwinn v. Commissioner,
Petitioners insist that
Knox
v.
McElligott,
Judgment affirmed.
