S Corporation (S Corp)
An S Corporation, or S Corp, is not a separate type of company – it’s a tax status that an eligible corporation or LLC can elect with the IRS. Once approved, the business stops paying federal corporate income tax and instead passes its profits and losses straight through to the shareholders, who report that income on their personal tax returns.
What Does S Corporation Mean?
The name comes from Subchapter S of Chapter 1 of the Internal Revenue Code, the section of federal tax law that spells out how this election works. A company doesn’t start out as an S Corp – it’s first formed as a regular corporation or an LLC, and then the owners file paperwork asking the IRS to tax it under Subchapter S instead of the default rules.
The main draw is avoiding double taxation. A standard C Corporation pays tax on its profits at the corporate level, and then shareholders pay tax again on any dividends they receive. An S Corp skips that first layer – the business itself generally owes no federal income tax, and profits are taxed only once, on the owners’ individual returns.
How an S Corp Is Different From a Regular Corporation
Structurally, an S Corp looks like any other corporation. It still needs a board of directors, corporate bylaws, annual meetings, and proper recordkeeping. The one real difference is how the IRS taxes it. So think of “S Corporation” less as a business structure and more as a tax election layered on top of an existing LLC or corporation.
Who Can Qualify as an S Corp?
The IRS is strict about eligibility. To elect and keep S Corp status, a business generally must:
- Be a domestic entity, formed and operating inside the United States
- Have no more than 100 shareholders
- Limit ownership to individuals, certain trusts, and estates – corporations, partnerships, and non-resident aliens can’t hold shares
- Issue only one class of stock (every share carries the same rights to profits and payouts)
- Not be a bank, insurance company, or certain other financial entities
Miss any of these conditions, even by accident, and the IRS can terminate the election.
Electing S Corp Status: Form 2553
A business doesn’t automatically become an S Corp just by being eligible – the owners have to actively file IRS Form 2553, Election by a Small Business Corporation. This form generally needs to be submitted within two months and 15 days of the start of the tax year the owners want the election to apply to. Miss that window, and the election typically won’t kick in until the following year (though late-election relief is sometimes available).
How S Corp Taxes Work
Once the election is in place, the S Corp files an informational return – Form 1120-S – every year. This return doesn’t calculate a corporate tax bill in most cases; instead, it reports the company’s income, deductions, and credits. Each shareholder then receives a Schedule K-1, showing their share of the profit or loss, which they report on their own Form 1040.
One thing many owners find attractive is the salary-and-distribution split. An owner who actively works in the business must pay themselves a “reasonable salary” through normal payroll, and that salary is subject to Social Security and Medicare taxes. Any additional profit paid out as a distribution, however, is generally not subject to self-employment tax – which is where a lot of the tax savings comes from. The IRS keeps a close eye on this split, though, and underpaying yourself just to dodge payroll tax can trigger an audit or penalties.
S Corp vs. C Corp vs. LLC
| Feature | S Corp | C Corp | LLC (default) |
|---|---|---|---|
| Taxation | Pass-through, taxed once | Taxed at corporate level, then again on dividends | Pass-through, taxed once |
| Shareholder limit | 100 max | Unlimited | Unlimited members |
| Stock classes | One class only | Multiple classes allowed | N/A (membership interests) |
| Ownership by other entities | Not allowed | Allowed | Allowed |
| Self-employment tax on profit | Only on salary, not distributions | Not applicable (wages only) | Usually on all profit |
Advantages of an S Corp
- Profits are taxed once, at the shareholder level, avoiding double taxation
- Owners keep the liability protection that comes with operating as a corporation
- Splitting income into salary and distributions can lower overall self-employment tax
- Being incorporated can add credibility with lenders, investors, and partners
Drawbacks to Consider
- The 100-shareholder cap and one-class-of-stock rule limit how a business can raise capital
- Ongoing corporate formalities (bylaws, meetings, records) add administrative work
- Payroll is mandatory for owner-employees, adding compliance overhead
- Losing eligibility – even unintentionally – can terminate the election and trigger back taxes
