S Corp vs LLC Taxes: What Business Owners Should Understand

A limited liability company (LLC) is created under state law. It is primarily a liability and governance structure. For federal tax purposes, a single-member LLC is generally treated as a disregarded entity (taxed like a sole proprietorship), and a multi-member LLC is generally taxed as a partnership, unless it elects otherwise.

An S corporation is not a type of business entity under state law. It is a tax status elected under Subchapter S of the Internal Revenue Code. A corporation, or an LLC that has elected to be taxed as a corporation, may qualify if it meets eligibility rules, such as limits on the type and number of shareholders and having one class of stock. Profits generally pass through to owners' personal returns rather than being taxed at a separate corporate level.

So the real comparison is usually between an LLC taxed by default (as a disregarded entity or partnership) and an LLC or corporation taxed as an S corporation. The differences tend to center on self-employment tax, owner compensation, how distributions are treated, flexibility in allocating income, and administrative burden.

Owners of LLCs taxed by default have traditionally reported business profit on their personal returns, and that profit is generally subject to self-employment tax. This approach is straightforward, with relatively little payroll and compliance overhead.

Owners who elect S corporation status have traditionally paid themselves a salary through payroll, with remaining profit potentially taken as distributions. The IRS expects that salary to be reasonable for the work performed, and unreasonably low compensation is a recognized area of scrutiny. The election also brings payroll filings, a separate corporate return, and basis tracking.

Many owners also weigh other factors: state-level taxes or fees that apply to certain entities, the effect on qualified business income treatment, the flexibility of partnership allocations versus the stricter S corporation rules, and how the structure affects a future sale or restructuring. Converting later can have tax consequences, so these choices are often revisited as a business grows.

The right tax strategist may help you model how each structure could apply to your specific facts, including your income level, state, number of owners, and long-term plans. A good conversation usually starts with your goals, then moves to how the rules might interact with them, with the understanding that results vary and nothing is guaranteed.

A typical visit generally involves reviewing your current entity documents, recent tax returns, payroll setup, and how you currently pay yourself. The strategist may discuss reasonable compensation, documentation, and whether the added compliance costs of an S election make sense for your circumstances.

Useful questions to ask include: What are the risks of this election for my situation? How would you support a reasonable salary? How would a future sale, new partner, or exit be affected? What state taxes apply? What would it take to reverse the election? Be cautious of anyone promoting aggressive or heavily marketed schemes, and favor strategies grounded in economic substance and documentation.