The C-Corp vs S-Corp question trips up a lot of business owners because the names sound like they describe two different types of companies. They don’t. They describe two different tax elections — and understanding that distinction changes everything about how you evaluate them.
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A corporation is a legal entity. C-Corp and S-Corp are IRS tax classifications. Every corporation starts as a C-Corp by default. An S-Corp is what you become when you file Form 2553 to elect pass-through taxation. LLCs can also elect S-Corp tax treatment — the legal structure stays the same, but the tax treatment changes. So when people say “should I be an LLC or an S-Corp?” they’re often asking the wrong question. You can be both: an LLC taxed as an S-Corp.
C-Corp: The Default Corporation
How it’s taxed: The corporation pays corporate income tax (currently 21%) on profits. When those profits are distributed to shareholders as dividends, shareholders pay personal income tax on them again. This is the famous “double taxation.”
Who it’s right for: Companies seeking venture capital or institutional investment, companies planning to go public, businesses with complex equity structures (multiple classes of stock), or companies that want to retain earnings inside the corporation rather than distributing them.
Who it’s wrong for: Most small businesses. The double taxation hit and the administrative overhead rarely make sense until you’re at a scale where those tradeoffs are justified.
S-Corp: Pass-Through Taxation
How it’s taxed: No corporate-level income tax. All profits and losses pass through to shareholders’ personal returns. No double taxation. Additionally, owner-employees pay self-employment tax only on their salary — not on distributions. This is where the savings come from.
Who it’s right for: Profitable small businesses generating $40,000+ in net income, where the SE tax savings on distributions exceed the added complexity. LLCs can elect S-Corp status — see the full breakdown: LLC vs S-Corp.
Restrictions: Max 100 shareholders, all must be US citizens/residents, only one class of stock. These restrictions matter for growth-stage companies seeking outside investment.
Side-by-Side Comparison
| Factor | C-Corp | S-Corp |
|---|---|---|
| Tax treatment | Double taxation (corp + shareholder) | Pass-through (no corporate tax) |
| Shareholder limit | Unlimited | Max 100 |
| Who can own shares | Anyone, including other corps | US citizens/residents only |
| Stock classes | Multiple classes allowed | One class only |
| Best for | VC-backed, pre-IPO, complex equity | Profitable small businesses |
| Self-employment tax | N/A (corporate structure) | On salary only — not distributions |
Frequently Asked Questions
Can an LLC be taxed as a C-Corp?
Yes. An LLC can elect to be taxed as a C-Corp by filing Form 8832 with the IRS. This is less common but used by some startups seeking venture capital who want corporate tax treatment without converting to a formal corporation.
Is S-Corp better than C-Corp for small businesses?
For most small businesses: yes. S-Corp pass-through taxation avoids double taxation and allows SE tax savings on distributions. C-Corp advantages — unlimited investors, multiple stock classes — typically don’t apply at small business scale.
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