C Corp vs S Corp Tax Basics: Corporation Taxation Explained

Corporation Basics: More Power, More Complexity

Corporations offer more flexibility and power than sole proprietorships, partnerships, or LLCs, but come with greater complexity. A corporation is a separate legal entity that can own property, enter contracts, and incur liabilities independently from its owners (shareholders). Shareholders enjoy limited liability — their personal assets are generally protected from business debts.

C Corporation Double Taxation

The biggest disadvantage of a C corporation is double taxation. The corporation pays corporate income tax on its profits (currently 21% federal rate). When those after-tax profits are distributed to shareholders as dividends, the shareholders pay tax again on their individual returns. This means the same dollar of profit can be taxed at both the corporate and individual level.

Strategies to mitigate double taxation include paying reasonable salaries to shareholder-employees (deductible at the corporate level), retaining earnings for business growth, and structuring transactions to minimize dividend distributions.

S Corporation Election

An S Corporation election (via Form 2553) allows a qualifying corporation to be taxed as a pass-through entity — similar to a partnership. The corporation itself generally pays no federal income tax; instead, income passes through to shareholders' personal returns via Schedule K-1.

S Corp eligibility has restrictions: no more than 100 shareholders, only U.S. citizen or resident shareholders, only one class of stock, and no corporate or partnership shareholders. Foreign-owned businesses generally cannot elect S Corp status.