1981—Pub. L. 97–34 designated existing provisions as subsec. (a), inserted heading “In general”, and added subsec. (b).

1962—Pub. L. 87–834 included other savings institutions chartered and supervised as savings and loan or similar associations under Federal or State law, and authorized amounts paid as interest as a deduction.

Pub. L. 97–34, title II, § 246(d), Aug. 13, 1981, 95 Stat. 256, provided that: “The amendments made by section 245 [amending this section and section 593 of this title] shall apply with respect to taxable years ending after the date of the enactment of this Act [Aug. 13, 1981].”