Bonds that are “not of a type offered to the public” do not have to meet the registration requirement.3 Temporary regulations state that a bond is “of a type offered to the public” if similar obligations are publicly offered or traded.4 Even if a bond is not publicly traded, it may be considered “of a type offered to the public” if: (a) the bond would be treated as readily tradable in an established securities market under the installment sales rules; (2) the bond is comparable to a bond described in (1); or (3) similar obligations are publicly offered or traded.5
The Treasury also has authority to require registration of other obligations if they are used frequently for tax avoidance.6
A book entry obligation is considered registered if the right to principal of, and stated interest on, the obligation may be transferred only through a book entry system that identifies the owner of an interest in the obligation. Regulations may permit book entries in the case of a nominee or a chain of nominees.7