delivered the opinion of the Court.
In 1922 Douglas Smith, by five instruments, created as many trusts for the benefit, of his wife and four children. The trustees named were the grantor; a son who was a direct beneficiary of one of the trusts and a contingent beneficiary of the others; and a banking company, possessed of trust powers. Neither the grantor nor the corporate trustee was a cestui que trust under any of the writings. In each agreement it was stipulated:
“Anything herein contained to the contrary notwithstanding, this Trust may be modified or revoked at any time by an instrument in writing signed by Douglas Smith [the grantor] and either one of the other two trustees or their successors.”
October 22, 1924, each of the agreements was modified by striking out the quoted clause, and the grantpr resigned as trustee. He did not report any of the income’which accrued in the year 1924 upon the trust property. The Revenue Act of 1924, § 219 (g) (43 Stat. 253, ,277) directs:
“ Where' the grantor of a trust has, at any time during the' taxable year, either alone or in conjunction with any person not a beneficiary of the trust, the power to revest in himself title to any part of the corpus of the trust, then the income of such part of the trust for such taxable year shall be included in computing the net income of the grantor.”
*174 The Commissioner of Internal Revenue held that this section required a return by Smith of the trust income for the period- January 1, 1924, to October 22, 1924, and assessed against him additional tax, which was paid under protest. The respondents, who are the personal representatives of Smith, now deceased, brought this suit to recover the sum paid. A demurrer to thé declaration was overruled and judgment given for the respondents. The Circuit Court of Appeals affirmed, holding that as to trusts created prior to the adoption of the'Act, §'219 (g) violates the Fifth Amendment when applied to impose a tax by reason of property and the income therefrom disposed of by the grantor before the passage of that or any other law taxing the income of such a trust to the settlor. The case is here on certiorari.
Petitioner maintains the section in terms applies in the circumstances disclosed; as the lax is laid only upon income accruing after January 1, 1924, the statute, is nob retroactive; and, as the grantor retained a measure of control, to tax him upon the income is not arbitrary or unreasonable though the trusts were created before any statute had laid a tax upon the settlor measured by the income of such a trust.
The respondents argue in support-of the. judgment that the trustee is a beneficiary of the trust as the phrase is used in the section, and the income in question is- therefore exempt from taxation to the settlor; and that if this view be rejected the provision offends the Fifth Amendment.
. The unambiguous phraseology of the Act precludes the suggested construction. A trustee is not subsumed under the désignation beneficiary. Both words have a common and accepted meaning; the former signifies the person who holds title to' the
res
and administers it for the benefit of others; the latter the
cestui que trust
who enjoys the
*175
advantages of such administration. The ordinary meaning of the terms used, which we are bound to adopt
(Old Colony R. Co.
v.
Commissioner,
Nor do we think the act has such a retroactive effect as to render its requirements arbitrary within the principle announced as to estate and gift taxes in
Nichols
v.
Coolidge,
We come then to the final position of the respondents: That when, applied in this case the statute is so arbitrary and unreasonable as to deny the due process guaranteed by the Fifth Amendment, since the exaction is based not on the settlor’s income or on income from his property, but on that which accrued to other persons from property to which'they alone had sole and exclusive-title.' The *176 argument proceeds upon , the theory that until alteration or revocation of .the trust the trustees held the legal title to the property for the sole benefit of the cestuis, and received the income; that both principal and income were beyond the control of the grantor until the alteration of the trust on October 22, 1924.
We have not heretofore had occasion to pass-upon the question thus presented. In
Corliss
v.
Bowers,
In. approaching the decision of the question before us it is to be borne in mind that the trustee is not a trustee of the power of revocation and owes no duty to the beneficiary to resist alteration or revocation of the trust. Of course hé owes a duty to the beneficiary to protect the trust res, faithfully to administer it, and to distribute the *177 income; but the very fact that he participates in the right of alteration or revocation negatives any fiduciary duty to the beneficiary to refrain from exercising the power. The facts of this case illustrate the point; for it appears the trust in favor of the grantor’s wife was substantially modified, to her financial detriment, by the concurrent action of the grantor and the trustees. This case must be viewed, therefore, as if the reserved right of revocation had been vested jointly in the grantor and a stranger to the trust.
Decisions of this court declare that where taxing acts are challenged we look nbt to the refinements of title but to' the actual command over the property taxed, — the actual benefit for which the tax is paid.
Corliss
v.
Bowers, supra,
at p. 378;
Tyler
v.
United States,
A contrary decision would make evasion of the tax a simple matter. There being no legally significant distinction between the trustee and a stranger to the trust as joint-holder with the grantor of a power to revoke, if the contention of the respondents were accepted it would be easy to select a friend or relative as co-holder of such a power and so place large amounts of principal and income accruing therefrom beyond the reach of taxation upon the grantor while- he retained to all intents and purposes control of both. Congress had power, in order to make the system of income taxation complete and consistent and to prevent facile evasion of the law, to make provision by § 219 (g) for taxation of trust income to the grantor in the circumstances here disclosed. Compare
Taft
v.
Bowers,
Judgment reversed.
