Code of Federal Regulations Title 26. Internal Revenue § 26.301.6501(n)–1 Special rules for chapter 42 and similar taxes

(b) Failure of private foundation plan, trust, or other organization to file. The period of limitations on assessment and collection described in section 6501 does not begin with respect to any person liable for tax under chapter 42 (other than section 4940) or section 4975 arising from a given act, where the private foundation, plan, trust, or other organization (as the case may be) has not filed its required return that reports such act for the year in which the act (or failure to act) giving rise to liability for such tax occurred.

(c) Example. The provision of this section may be illustrated by the following example:

Example. In 1973, D, an individual taxpayer who was a disqualified person under the provisions of section 4946(a)(1), participated in an act of self-dealing with a private foundation and incurred a tax under section 4941(a)(1). On May 15, 1974, the private foundation files a Form 990–PF and answers all the questions thereon with regard to any acts of self-dealing (as defined in section 4941(d)) in which it may have engaged in 1973. Assuming that the foundation's return was not a false or fraudulent return nor made with the willful attempt to defeat tax, the period of limitations on assessment and collection under section 6501(a) shall start with respect to any tax under section 4941(a) or section 4941(b) imposed on D arising out of that transaction with such foundation.