The Fundamental Distinction: Legal Structure vs. Tax Classification
One of the most frequent points of confusion among small business owners is comparing an LLC to an S-Corp. An LLC is a legal entity formed under state law. An S-Corporation is not a separate legal entity; it is a special tax classification under Subchapter S of the Internal Revenue Code that an LLC or Corporation can elect.
The Self-Employment Tax Dilemma
In a standard single-member LLC, all net profit is treated as self-employment income subject to 15.3% FICA taxes (12.4% Social Security up to wage caps and 2.9% Medicare). As your net profits exceed $75,000 to $100,000 annually, this tax burden can become significant.
The S-Corp Tax Strategy
By electing S-Corp status, LLC owners split their net earnings into two categories:
- Reasonable W-2 Salary: Subject to standard payroll withholdings and FICA taxes.
- Shareholder Dividend Distributions: Free from the 15.3% self-employment tax.
However, the IRS strictly enforces the "reasonable compensation" doctrine. Business owners must pay themselves fair market value for their labor, requiring formal payroll processing, quarterly 941 filings, and state unemployment insurance accounts.
