LLC vs. S-Corp: Which Structure Is Right for Your Small Business?
The LLC vs. S-Corp decision is one of the most consequential tax elections a small business owner makes — and it's frequently gotten wrong. The right answer depends on your net income, how much you work in the business, your state, and whether you plan to take on investors.
Short answer: Most businesses under $50K net profit should be an LLC (default taxation). Businesses generating $50K–$80K+ in net profit often save on self-employment taxes by electing S-Corp status. But there are real costs to S-Corp status that the "just elect S-Corp and save on taxes" advice glosses over.
Table of Contents
- LLC vs. S-Corp: Quick Comparison
- How LLCs Are Taxed
- How S-Corps Are Taxed
- The S-Corp Tax Advantage — And Its Real Costs
- Decision Matrix: Which Is Right for You?
- Formation and Ongoing Costs
- State-Specific Considerations
- How to Convert an LLC to S-Corp Status
- Frequently Asked Questions
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LLC vs. S-Corp: Quick Comparison
| Factor | LLC (Default) | LLC Taxed as S-Corp | S-Corp (Corporation) |
|---|---|---|---|
| Formation | Simple | Same as LLC + IRS election | More complex |
| Self-employment tax | 15.3% on all net profit | 15.3% on salary only | 15.3% on salary only |
| Payroll required? | No | Yes | Yes |
| Reasonable salary required? | No | Yes (IRS rule) | Yes (IRS rule) |
| Pass-through taxation | Yes | Yes | Yes |
| Investors / equity | Flexible | Restricted | Restricted |
| Annual reporting | Varies by state | Same + payroll filings | More requirements |
| Best for net profit | Under $50K | $50K–$250K+ | $50K–$250K+ |
How LLCs Are Taxed
By default, LLCs are taxed as disregarded entities (single-member) or partnerships (multi-member). All net profit flows to your personal return and is subject to:
- Self-employment tax (SE tax): 15.3% on the first $168,600 (2026), then 2.9% above that. This covers Social Security and Medicare and applies to all net profit from self-employment.
- Federal income tax: 10%–37% depending on your bracket.
- State income tax: Varies by state (California charges 1.5% LLC franchise tax as an additional layer).
Example: LLC with $80,000 net profit
- SE tax: $80,000 × 15.3% = $12,240
- Federal income tax (22% bracket): $80,000 × 22% = $17,600
- Total federal tax burden: ~$29,840
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How S-Corps Are Taxed
An S-Corp (or an LLC that elects S-Corp taxation via IRS Form 2553) splits business income into two categories:
- Reasonable salary — subject to payroll taxes (FICA: 15.3% split employer/employee)
- Distributions — subject only to income tax, NOT self-employment tax
The key mechanism: You avoid SE tax on the "distribution" portion — but you must pay yourself a "reasonable" salary first. The IRS actively audits S-Corps that pay unreasonably low salaries.
Example: LLC taxed as S-Corp with $80,000 net profit
- Reasonable salary set at $45,000 → Payroll taxes: $45,000 × 15.3% = $6,885
- Distribution: $35,000 → No SE tax
- Federal income tax: Same as LLC (~$17,600)
- Tax savings vs. LLC: $12,240 − $6,885 = $5,355/year
But wait — there are costs.
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The S-Corp Tax Advantage — And Its Real Costs
The savings are real. The costs are frequently omitted from the "elect S-Corp" advice:
Payroll Administration
You must run a real payroll — quarterly payroll tax deposits (Form 941), W-2 at year end, possibly state payroll taxes. If you don't already have payroll, you need payroll software (Gusto: ~$500–$800/year) or an accountant to run it.Additional Accounting Fees
S-Corps file Form 1120-S, which is more complex than a Schedule C or partnership return. Expect $500–$1,500/year in additional accounting fees versus a simple LLC return.State-Level S-Corp Costs
Some states don't recognize S-Corp elections or impose additional taxes:- California: S-Corps pay 1.5% franchise tax on net income (minimum $800). There is no guaranteed savings for California S-Corps below certain income thresholds.
- New York: S-Corps pay a fixed dollar amount franchise tax based on New York receipts.
- Illinois: Does not impose an entity-level income tax on S-Corps, so the pass-through benefit is cleaner.
Break-Even Analysis
| Annual Accounting/Payroll Cost | Minimum Net Profit for S-Corp to Break Even |
|---|---|
| $1,500/year | ~$40,000 net profit |
| $2,500/year | ~$50,000 net profit |
| $3,500/year | ~$65,000 net profit |
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Decision Matrix: Which Is Right for You?
Choose LLC (default taxation) if:
- Net profit is under $50,000/year
- You're in a state with high LLC flexibility and low additional S-Corp taxes (most states)
- You have or plan to have investors who need equity (S-Corps cannot have more than 100 shareholders, all must be U.S. citizens or residents, and no corporate shareholders allowed)
- You want to keep administrative overhead minimal
- You're a startup that may not be profitable for the first 1–2 years
Elect S-Corp status if:
- Net profit consistently exceeds $50,000–$80,000/year
- You work full-time in the business (so a "reasonable salary" is easy to justify)
- You're a single-member LLC or a small team with no outside investors
- You're willing to set up payroll and handle the additional compliance
- You've confirmed the math works in your specific state
Stay as LLC, skip S-Corp, if:
- You're in California with net profit under $150,000 (state tax often erases savings)
- You have complex investor arrangements or want to issue preferred equity in the future
- You're planning to sell the business — S-Corp basis rules create complexity at exit
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Formation and Ongoing Costs
| Cost Item | LLC | LLC as S-Corp |
|---|---|---|
| State filing fee | $50–$500 | $50–$500 |
| IRS Form 2553 filing | $0 | $0 (but must be timely) |
| Annual state report | $0–$800/year | Same |
| Payroll software | Not required | $500–$1,200/year |
| Annual accounting | $300–$800/year | $800–$2,500/year |
| Total ongoing (est.) | $300–$1,300/year | $1,300–$4,200/year |
State-Specific Considerations
California: The gap between LLC and S-Corp is smaller than most states. California charges 1.5% franchise tax on S-Corp net income (minimum $800) and has complex franchise tax rules for LLCs as well. Run the numbers specifically for California before electing S-Corp.
Texas: No state income tax — the self-employment tax savings from S-Corp status are pure gain, and compliance costs are lower. Texas businesses benefit more clearly from S-Corp elections at lower income thresholds.
New York: The state's S-Corp franchise tax calculation is complex. Use a New York CPA for this analysis.
Florida: No state income tax. S-Corp elections are straightforward and compliance costs are lower than high-tax states.
Washington: No state income tax, but a Business & Occupation (B&O) tax applies to gross revenue (not net income). S-Corp election doesn't affect B&O tax calculation.
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How to Convert an LLC to S-Corp Status
Converting is simpler than forming a new entity:
- Your LLC must meet IRS eligibility requirements: Domestic entity, no more than 100 shareholders, only U.S. citizens/residents as shareholders, only one class of stock.
- File IRS Form 2553 (Election by a Small Business Corporation) — must be filed no later than 2 months and 15 days after the start of the tax year for which the election is to take effect, OR at any time during the preceding tax year.
- Set up payroll before you pay yourself (you cannot backfill a reasonable salary at year end).
- Notify your accountant — your tax filing requirements change immediately.
- Check state conformity — some states require a separate state-level S-Corp election.
Late election relief: The IRS will often grant retroactive S-Corp elections if the late filing was due to reasonable cause and the taxpayer has consistently acted as an S-Corp. File Form 2553 with a statement explaining the delay.
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Frequently Asked Questions
Q: Can I switch from S-Corp back to LLC taxation later? Yes, but there's a 5-year waiting period before you can re-elect S-Corp status after revoking it. Terminating S-Corp status is a significant decision — get accounting advice before doing it.
Q: Is an LLC the same as an S-Corp? No. An LLC is a legal entity structure. An S-Corp is a tax classification. An LLC can elect to be taxed as an S-Corp (by filing Form 2553), or as a C-Corp, partnership, or disregarded entity. The two are independent choices: legal structure vs. tax structure.
Q: Does S-Corp status affect my liability protection? No. An LLC elected as an S-Corp has the same liability protection as a standard LLC. The tax election does not change the legal entity type or your personal liability protection.
Q: What is a "reasonable salary" for an S-Corp owner? The IRS defines it as compensation comparable to what an arm's-length employer would pay for the same services. The IRS looks at industry wage data, your qualifications, and the time you spend working in the business. Paying yourself $20,000 while taking $200,000 in distributions from a business where you're the primary revenue driver is an audit flag.
Q: Can a multi-member LLC elect S-Corp status? Yes, as long as all members are eligible shareholders (U.S. citizens or residents, under 100 total members, no corporate members). All members must consent to the S-Corp election.
Q: Can I form an LLC and immediately elect S-Corp? Yes — file Form 2553 within 2 months and 15 days of formation to have the election apply from the start of the tax year. Many founders form their LLC and elect S-Corp simultaneously when launching a business they expect to be profitable immediately.
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