(a) In general. (1) The basis of property acquired from a decedent, as determined under section 1014(a) or section 1022, is uniform in the hands of every person having possession or enjoyment of the property at any time under the will or other instrument or under the laws of descent and distribution. The principle of uniform basis means that the basis of the property (to which proper adjustments must, of course, be made) will be the same, or uniform, whether the property is possessed or enjoyed by the executor or administrator, the heir, the legatee or devisee, or the trustee or beneficiary of a trust created by a will or an inter vivos trust. In determining the amount allowed or allowable to a taxpayer in computing taxable income as deductions for depreciation or depletion under section 1016(a)(2), the uniform basis of the property shall at all times be used and adjusted. The sale, exchange, or other disposition by a life tenant or remainderman of his interest in property will, for purposes of this section, have no effect upon the uniform basis of the property in the hands of those who acquired it from the decedent. Thus, gain or loss on sale of trust assets by the trustee will be determined without regard to the prior sale of any interest in the property. Moreover, any adjustment for depreciation shall be made to the uniform basis of the property without regard to such prior sale, exchange, or other disposition.

(2) Under the law governing wills and the distribution of the property of decedents, all titles to property acquired by bequest, devise, or inheritance relate back to the death of the decedent, even though the interest of the person taking the title was, at the date of death of the decedent, legal, equitable, vested, contingent, general, specific, residual, conditional, executory, or otherwise. Accordingly, there is a common acquisition date for all titles to property acquired from a decedent within the meaning of section 1014 or section 1022, and, for this reason, a common or uniform basis for all such interests. For example, if distribution of personal property left by a decedent is not made until one year after his death, the basis of such property in the hands of the legatee is its fair market value at the time when the decedent died, and not when the legatee actually received the property. If the bequest is of the residue to trustees in trust, and the executors do not distribute the residue to such trustees until five years after the death of the decedent, the basis of each piece of property left by the decedent and thus received, in the hands of the trustees, is its fair market value at the time when the decedent dies. If the bequest is to trustees in trust to pay to A during his lifetime the income of the property bequeathed, and after his death to distribute such property to the survivors of a class, and upon A's death the property is distributed to the taxpayer as the sole survivor, the basis of such property, in the hands of the taxpayer, is its fair market value at the time when the decedent died. The purpose of the Code in prescribing a general uniform basis rule for property acquired from a decedent is, on the one hand, to tax the gain, in respect of such property, to him who realizes it (without regard to the circumstances that at the death of the decedent it may have been quite uncertain whether the taxpayer would take or gain anything); and, on the other hand, not to recognize as gain any element of value resulting solely from the circumstance that the possession or enjoyment of the taxpayer was postponed. Such postponement may be, for example, until the administration of the decedent's estate is completed, until the period of the possession or enjoyment of another has terminated, or until an uncertain event has happened. It is the increase or decrease in the value of property reflected in a sale or other disposition which is recognized as the measure of gain or loss.

(3) The principles stated in subparagraphs (1) and (2) of this paragraph do not apply to property transferred by an executor, administrator or trustee, to an heir, legatee, devisee or beneficiary under circumstances such that the transfer constitutes a sale or exchange. In such a case, gain or loss must be recognized by the transferor to the extent required by the revenue laws, and the transferee acquires a basis equal to the fair market value of the property on the date of the transfer. Thus, for example, if the trustee of a trust created by will transfers to a beneficiary, in satisfaction of a specific bequest of $10,000, securities which had a fair market value of $9,000 on the date of the decedent's death (the applicable valuation date) and $10,000 on the date of the transfer, the trust realizes a taxable gain of $1,000 and the basis of the securities in the hands of the beneficiary would be $10,000. As a further example, if the executor of an estate transfers to a trust property worth $200,000, which had a fair market value of $175,000 on the date of the decedent's death (the applicable valuation date), in satisfaction of the decedent's bequest in trust for the benefit of his wife of cash or securities to be selected by the executor in an amount sufficient to utilize the marital deduction to the maximum extent authorized by law (after taking into consideration any other property qualifying for the marital deduction), capital gain in the amount of $25,000 would be realized by the estate and the basis of the property in the hands of the trustees would be $200,000. If, on the other hand, the decedent bequeathed a fraction of his residuary estate to a trust for the benefit of his wife, which fraction will not change regardless of any fluctuations in value of property in the decedent's estate after his death, no gain or loss would be realized by the estate upon transfer of property to the trust, and the basis of the property in the hands of the trustee would be its fair market value on the date of the decedent's death or on the alternate valuation date.

(b) Multiple interests. Where more than one person has an interest in property acquired from a decedent, the basis of such property shall be determined and adjusted without regard to the multiple interests. The basis of computing gain or loss on the sale of any one of such multiple interests shall be determined under § 1.1014-5. Thus, the deductions for depreciation and for depletion allowed or allowable, under sections 167 and 611, to a legal life tenant as if the life tenant were the absolute owner of the property, constitute an adjustment to the basis of the property not only in the hands of the life tenant, but also in the hands of the remainderman and every other person to whom the same uniform basis is applicable. Similarly, the deductions allowed or allowable under sections 167 and 611, both to the trustee and to the trust beneficiaries, constitute an adjustment to the basis of the property not only in the hands of the trustee, but also in the hands of the trust beneficiaries and every other person to whom the uniform basis is applicable. See, however, section 262. Similarly, adjustments in respect of capital expenditures or losses, tax-free distributions, or other distributions applicable in reduction of basis, or other items for which the basis is adjustable are made without regard to which one of the persons to whom the same uniform basis is applicable makes the capital expenditures or sustains the capital losses, or to whom the tax-free or other distributions are made, or to whom the deductions are allowed or allowable. See § 1.1014-6 for adjustments in respect of property acquired from a decedent prior to his death.

(c) Records. The executor or other legal representative of the decedent, the fiduciary of a trust under a will, the life tenant and every other person to whom a uniform basis under this section is applicable, shall maintain records showing in detail all deductions, distributions, or other items for which adjustment to basis is required to be made by sections 1016 and 1017, and shall furnish to the district director such information with respect to those adjustments as he may require.

(d) Effective/applicability date. This section applies on and after January 19, 2017. For rules before January 19, 2017, see § 1.1014-4 as contained in 26 CFR part 1 revised as of April 1, 2016.