The U.S. Congressional Research Services (CRS) has published an updated report dated 9 December 2020, A Brief Overview of Business Types and Their Tax Treatment. The report covers C Corporations, Sole Proprietorships, Partnerships, S Corporations, and Limited Liability Companies, as well as the 199A Deduction (20% of qualified business income) for qualifying pass-through businesses introduced by the Tax Cuts and Jobs Act (TCJA). --- Summary In the United States, how a business is taxed at the federal level is partly dependent on how it is organized. The income of subchapter C corporations, also known as "regular" corporations, is taxed once...