31 C.F.R. § 346.5
(a) Except as provided in paragraph (b) of this section, the amount of Individual Retirement Bonds which may be registered in any one individual's name is limited to the amount for which an annual deduction may be taken under either section 219 or 220 of the Internal Revenue Code. 1 These limitations are as follows:
(b) The above limitations do not apply to rollover bond purchases, as described in sections 402(a)(5), 403(a)(4), or 408(d)(3) of the Internal Revenue Code.
(26 U.S.C. 220 and 31 U.S.C. 757)
1 Note: Under the Internal Revenue Code, bonds issued during any given year or within 45 days thereafter may be deducted in that year.
2 Note: Code section 220 requires, in effect, that the total IRA contributions in each spouse's name to be deducted in any one year be in equal amounts. While it is permissible for an eligible married couple to utilize several different forms of IRA investments within the same year, this means that couples investing solely in bonds must purchase equal amounts of bonds in each spouse's name.
[42 FR 37520, July 21, 1977]