Statista is a searchable database of statistics on a wide range of topics, including taxation. Data can be exported to Excel and charts can be exported as picture files or directly into PowerPoint.
A wide range of tables, articles, and data that describe and measure elements of the U.S. tax system. Includes statistics on businesses, Charitable Organizations and more.
You must use Internet ExplorerContains financial reports for US and more than 10,000 international companies that filed with the SEC. Coverage extends back to 1992 and to 1960 for some companies.
The Security & Exchange Commission's database, EDGAR (Electronic Data Gathering, Analysis, and Retrieval), provides free access to 10-Ks, 10-Qs, proxies, prospectuses and other documents.