Example. W creates an irrevocable trust on December 10, 1968, and retains the right to receive the income for life. Upon the death of W, which occurs after December 31, 1976, the trust property is distributable to W's surviving issue, per stirpes. The transfer creating the remainder interest in the trust occurred in 1968. See § 25.2511-1(c)(2) . Therefore, section 2518 does not apply to the disclaimer of the remainder interest because the transfer creating the interest was made prior to January 1, 1977. If, however, W had caused the gift to be incomplete by also retaining the power to designate the person or persons to receive the trust principal at death, and, as a result, no transfer (within the meaning of § 25.2511-1(c)(2) ) of the remainder interest was made at the time of the creation of the trust, section 2518 would apply to any disclaimer made after W's death with respect to an interest in the trust property.
26 C.F.R. §25.2518-1