Exception for certain window payments of interest, etc.

For purposes of subparagraphs (C) and (D) of subsection (a)(1), the term “reportable interest or dividend payment” shall not include any payment—

(A) in redemption of a coupon on a bearer instrument or in redemption of a United States savings bond, or

(B) to the extent provided in regulations, of interest on instruments similar to those described in subparagraph (A).

The preceding sentence shall not apply for purposes of determining whether there is payee underreporting described in subsection (c).