Financial Accounting Standards Board
The designated private sector organization in the U.S. that establishes financial accounting and reporting standards. FASB standards are recognized as authoritative by the U.S. Securities and Exchange Commission and the American Institute of Certified Public Accountants.
http://www.fasb.org/
Internal Revenue Service
The IRS is the U.S. government agency responsible for tax collection and tax law enforcement. Contains downloadable forms, instructions, and agency publications. It also includes "The Digital Daily," an almost-humorous online newspaper.
http://www.irs.gov/
U.S. Government Accountability Office
Investigative arm of Congress charged with examining matters relating to the receipt and payment of public funds.
http://www.gao.gov/
U.S. Securities and Exchange Commission
The SEC is the agency responsible for administering federal securities laws in the U.S.
http://www.sec.gov/