As used in this chapter, unless the context requires a different meaning: “Bonds” means bonds or other obligations issued by the Commonwealth, by counties, cities and towns, and by their agencies, institutions, and authorities or by any combination of the foregoing under the provisions of the Public Finance Act (§ 15.2-2600 et seq.), or otherwise, the interest on which is intended to be excludable from the gross income of the recipients thereof for federal income tax purposes. “Depository institution” means any commercial bank, trust company, or savings institution insured by an agency or instrumentality of the United States government. “Issuers” means the Commonwealth, counties, cities and towns in the Commonwealth, and their agencies, institutions, and authorities. “Official handling public funds” or “official” means the treasurer of the issuer or, if there is no officer known as treasurer of the issuer, the chief financial officer of the issuer, and any person or entity described in § 58.1-3123.