LLC vs. S-Corp: What's the Real Difference?
One of the most common confusions for business owners: the difference between an LLC and an S-Corp. They aren't mutually exclusive — here's what you actually need to know.
A guide by Taxstra Tax & Accounting — CPA-led tax strategy for business owners
Legal Entity vs. Tax Status: The Core Concept
This is the most important thing to understand before making any entity decision:
LLC (Limited Liability Company) is a legal entity formed at the state level. It protects your personal assets from business lawsuits and gives you a separate legal identity for your business.
S-Corp is a tax election made with the IRS by filing Form 2553. It tells the IRS how you want your business income to be taxed — it does not change your state-law entity structure.
Most small businesses start as an LLC. By default, the IRS taxes a single-member LLC as a sole proprietorship. You file a Schedule C on your personal return, and you pay self-employment tax on 100% of your net profit. When you elect S-Corp status, your LLC remains an LLC legally — but for tax purposes it becomes an S-Corp.
The Short Version
You can be both. Most small business owners who elect S-Corp status have an LLC taxed as an S-Corp. The LLC protects you legally. The S-Corp election reduces your self-employment tax bill.
The Core Tax Difference
The entire tax case for an S-Corp election comes down to one mechanism: self-employment tax vs. payroll tax on a salary only.
Standard LLC (Sole Prop)
- 15.3% Self-Employment Tax on 100% of profit (up to SS wage base)
- Simple compliance (Schedule C)
- No payroll requirement
- No separate business return
S-Corp Election
- 15.3% Tax ONLY on W-2 salary portion
- Distributions above salary are SE-tax-free
- Requires payroll + quarterly tax returns
- Separate Form 1120-S return required
Worked Example: $150K Net Income
Without S-Corp (LLC/Sole Prop):
$150,000 × 92.35% × 15.3% SE tax = $21,215 SE tax
With S-Corp at $75K salary:
$75,000 × 15.3% payroll tax = $11,475
Plus ~$3,000 compliance costs = $14,475 total
Net savings: $21,215 - $14,475 = ~$6,740/year
Use the S-Corp calculator to model your specific situation.
When Does the S-Corp Election Make Sense?
The general rule of thumb is that S-Corp status becomes beneficial when your net profit consistently falls between $75,000 and $100,000 annually. Why? Because the tax savings need to be large enough to offset the compliance costs.
S-Corps require: running formal payroll, filing quarterly payroll tax returns (941/940), filing a separate business tax return (Form 1120-S), and paying state franchise taxes where applicable.
If you make $50,000 net, the tax savings might be $2,000 but the payroll and accounting costs might be $2,500 — not worth it. But at $150,000, the savings typically run $8,000–$12,000, easily justifying the extra admin work.
Still not sure? The LLC vs. S-Corp Decision Tool walks through the key decision factors for your situation in about 2 minutes. Or for a deeper look at the election mechanics, see the S-Corp Election guide.
| Situation | Recommendation |
|---|---|
| Net SE income under $60K | Stay LLC/sole prop — compliance costs likely exceed savings |
| Net SE income $75K–$150K | Model it carefully — often worth it, state-dependent |
| Net SE income $150K+ | S-Corp election almost always wins after compliance costs |
| High W-2 income (above SS wage base) | Reduced benefit — only Medicare savings apply on distributions |
| Income highly variable year to year | More complex — payroll management requires care |
| Hate paperwork / compliance | Factor in the admin burden; it's real and ongoing |
The Compliance Reality
The S-Corp election is not a "set it and forget it" strategy. The ongoing compliance requirements are real, and underestimating them is a common mistake:
Running payroll is not optional
If you perform services for your S-Corp and receive compensation, you must run payroll. This means quarterly 941 filings, W-2 at year-end, and employer-side FICA taxes. Skipping payroll and taking only distributions is the #1 S-Corp audit trigger.
Annual Compliance Checklist
Common Questions
Ready to model your situation?
Bryan will run the numbers for your specific income, state, and business type to tell you whether the S-Corp election makes sense — and set it up if it does.
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