Code of Federal Regulations Title 31. Money and Finance–Treasury § 31.515.333 Depository institution

(a) An insured bank as defined in section 3 of the Federal Deposit Insurance Act;

(b) An insured institution as defined in section 408(a) of the National Housing Act;

(c) An insured credit union as defined in section 101 of the Federal Credit Union Act;  or

(d) Any other institution that is carrying on banking activities pursuant to a charter from a Federal or state banking authority.