A C corporation, or C corp, is a legal business entity taxed separately from its owners under Subchapter C of the IRS code. The company pays corporate income tax at the entity level, while providing limited liability protection to shareholders. C corps can issue multiple classes of stock and can have unlimited shareholders of any type, including corporations, partnerships, and foreign entities. It is the default legal structure for venture-backed startups in the United States and is required by most venture capital investors.
The defining feature of a C corp is the legal and tax separation between the company and its owners. The company files its own tax return (Form 1120) and pays federal corporate income tax (a flat 21 perce...