25.2701-7—Separate interests.
The Secretary may, by regulation, revenue ruling, notice, or other document of general application, prescribe rules under which an applicable retained interest is treated as two or more separate interests for purposes of section 2701. In addition, the Commissioner may, by ruling issued to a taxpayer upon request, treat any applicable retained interest as two or more separate interests as may be necessary and appropriate to carry out the purposes of section 2701.