Treasury org

• Start of a return address?
• Tax court defendant, for short
• Recipient of many returns: Abbr
• Org. that does investigations
• Schedule-keeping org.
• Federal income tax group: Abbr
• Org. with a staff of auditors
• Govt. agcy. whose website ranked higher than Facebook in a recent on-line satisfaction survey
• Audit conductor, for short

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
also I.R.S. , initialism (acronym) of Internal Revenue Service , U.S. federal government tax collection agency, attested by 1954. The office dates to 1862; name changed 1953 from Bureau of Internal Revenue .