LLC vs. S-Corp: Which Is Right for Your Business?
An S-Corp isn’t a business entity — it’s a tax election. Any LLC or corporation can elect S-Corp status to save thousands in self-employment taxes. This guide explains how S-Corp taxation works, when the savings kick in, and how to decide if it’s worth the added complexity.
The Key Difference: Entity vs. Tax Election
This is the single most important thing to understand: an LLC is a business entity. An S-Corp is a tax classification. They’re not the same category of thing — and comparing them directly is like comparing a car to a paint color. You can have an LLC that’s taxed as an S-Corp, a corporation that’s taxed as an S-Corp, or either entity without S-Corp status.
When people say “LLC vs. S-Corp,” what they really mean is: “Should my LLC keep its default tax treatment, or should I elect S-Corp taxation?” That’s the real question — and the answer depends almost entirely on how much money your business makes.
How Default LLC Taxation Works
By default, a single-member LLC is taxed as a sole proprietorship. All net profits flow to your personal tax return and are subject to both income tax and self-employment tax (15.3%) — that’s 12.4% for Social Security and 2.9% for Medicare. On $150,000 in profit, that’s roughly $21,000 in self-employment tax alone, on top of your income tax.
How S-Corp Taxation Works
With S-Corp status, you split your income into two buckets: a “reasonable salary” (subject to payroll taxes) and distributions (not subject to self-employment tax). On that same $150,000 in profit, you might pay yourself a $70,000 salary and take $80,000 as distributions. You only pay payroll taxes on the $70,000 — saving roughly $12,000 per year.
LLC vs. S-Corp: Side-by-Side
How default LLC taxation compares to S-Corp taxation across every major factor.
LLC (Default Taxation)
- Entity type: Legal business entity
- Taxation: Pass-through (sole prop or partnership)
- SE tax: 15.3% on all net profit
- Payroll: Not required
- Owners: Unlimited, any nationality
- Complexity: Simple — no payroll, minimal compliance
- Cost to maintain: $100–$500/year
- Best under: $60K net profit
LLC + S-Corp Election
- Entity type: LLC (unchanged)
- Taxation: S-Corp pass-through
- SE tax: Only on salary portion
- Payroll: Required — must run payroll
- Owners: Max 100, US citizens/residents only
- Complexity: Moderate — payroll, W-2s, quarterly filings
- Cost to maintain: $1,500–$4,000/year
- Best above: $60K net profit
The Math: How Much Can You Save?
Real numbers showing S-Corp savings at different income levels. The breakeven point is approximately $60,000 in net profit.
$40K Net Profit
- LLC SE tax: ~$5,652
- S-Corp salary: $35,000
- S-Corp payroll tax: ~$5,355
- S-Corp additional costs: ~$2,000
- Net savings: –$1,703
$80K Net Profit
- LLC SE tax: ~$11,304
- S-Corp salary: $50,000
- S-Corp payroll tax: ~$7,650
- S-Corp additional costs: ~$2,000
- Net savings: ~$1,654
$150K Net Profit
- LLC SE tax: ~$20,598
- S-Corp salary: $70,000
- S-Corp payroll tax: ~$10,710
- S-Corp additional costs: ~$2,500
- Net savings: ~$7,388
Important: These are simplified estimates for illustration. Your actual savings depend on your state taxes, deductions, filing status, and what qualifies as a “reasonable salary” in your industry. Work with a CPA who understands S-Corp taxation to model your specific situation before electing.
The “Reasonable Salary” Rule
The IRS requires S-Corp owner-employees to pay themselves a “reasonable salary” before taking distributions. This is the most scrutinized aspect of S-Corp taxation — and the one that gets people in trouble.
A reasonable salary is what you’d have to pay someone to do your job in the open market. If you’re a marketing consultant billing $200,000 a year, you can’t pay yourself a $30,000 salary and take $170,000 as distributions. The IRS would reclassify those distributions as wages and hit you with back taxes, penalties, and interest.
How to Determine Your Reasonable Salary
There’s no formula in the tax code — it’s based on facts and circumstances. Factors the IRS considers include comparable salaries for your role in your industry and geography, your training and experience, the time and effort you spend on the business, and what similar businesses pay for equivalent services. Resources like the Bureau of Labor Statistics, Glassdoor, and industry salary surveys are good benchmarks.
Rules of Thumb
Most CPAs recommend setting your salary at 40–60% of net profit as a starting point, then adjusting based on industry comparables. At $100K net profit, a $50K–$60K salary is generally defensible for most industries. At $200K+, you may need to go higher — especially in professions like law, medicine, or consulting where market salaries are well-documented.
What Does S-Corp Status Actually Cost?
S-Corp election is free — but running an S-Corp adds real compliance costs that eat into your savings.
Payroll Service
$500–$2,000/year. You must run payroll — with W-2s, withholding, quarterly payroll tax filings (Form 941), and annual FUTA. Gusto, ADP, or a local bookkeeper can handle this.
S-Corp Tax Return
$500–$2,000/year. S-Corps file Form 1120-S — a separate corporate return. This is more complex than Schedule C and most people need a CPA.
Quarterly Filings
Quarterly estimated tax payments, quarterly payroll tax filings, and year-end W-2s and 1099s. More deadlines than a standard LLC.
Bookkeeping
$200–$500/month. S-Corps need proper books — separate tracking of salary, distributions, retained earnings, and shareholder basis. Clean books are essential for compliance.
How to Elect S-Corp Status
The election process is straightforward — but timing matters.
Form Your LLC
First, form your LLC with your state (if you haven’t already). You need an existing legal entity before you can elect S-Corp tax status. LLC formation guide →
Get Your EIN
Apply for a federal EIN from the IRS if you don’t have one. You’ll need it for the S-Corp election form and for setting up payroll.
File IRS Form 2553
Submit Form 2553 to the IRS. File within 75 days of formation for the election to apply to your first tax year, or by March 15 to apply to the current tax year. Late elections may be accepted with reasonable cause.
Set Up Payroll
You’re now required to run payroll — even if you’re the only employee. Sign up for a payroll service (Gusto, ADP, QuickBooks Payroll) and set your reasonable salary.
Separate Salary & Distributions
Pay yourself a regular salary via payroll (with withholding and payroll taxes). Take remaining profits as shareholder distributions — these are not subject to self-employment tax.
File Form 1120-S Annually
File your S-Corp tax return (Form 1120-S) by March 15 each year. Issue K-1s to all shareholders showing their share of income, deductions, and credits. Report the K-1 on your personal return.
Deadline alert: The Form 2553 deadline is March 15 for the election to apply to the current tax year. If you miss it, the election applies to the following year. The IRS does accept late elections with reasonable cause — but don’t count on it. File early.
S-Corp Restrictions & Limitations
S-Corp status comes with eligibility requirements that don’t apply to default LLCs.
S-Corp Requirements
- Maximum 100 shareholders — family members can be treated as one
- US citizens or residents only — no foreign shareholders
- Single class of stock — no preferred shares or different voting rights
- Must be a domestic entity — incorporated or organized in the US
- Cannot be certain entity types — no banks, insurance companies, or DISCs
- Calendar or permitted fiscal year — most use calendar year
What Disqualifies You
- Having any non-US citizen or non-resident shareholder
- Exceeding 100 shareholders
- Issuing preferred stock or multiple stock classes
- Having another corporation or partnership as a shareholder
- Operating as certain financial institutions
- Failing to file Form 2553 by the deadline
VC incompatibility: The single-class-of-stock and shareholder restrictions make S-Corps incompatible with venture capital. VCs require preferred stock, and many VC funds include foreign LPs. If there’s any chance you’ll raise institutional funding, stay as a C-Corp or keep default LLC taxation until you’re certain about your path. You can always revoke S-Corp status later.
Should You Elect S-Corp? A Simple Framework
Answer these four questions to decide.
✓ Elect S-Corp If…
- Your LLC nets $60,000+ per year consistently
- You’re the primary worker in the business (not passive income)
- You don’t have or plan to have foreign shareholders
- You’re not planning to raise venture capital
- You’re comfortable running payroll and filing a corporate return
- You have a CPA who understands S-Corp taxation
- Your industry has defensible salary benchmarks
✗ Keep Default LLC If…
- Your LLC nets under $60,000 per year
- Your income is volatile or unpredictable
- You have or may have foreign members
- You’re considering raising VC funding
- You want maximum simplicity and minimum compliance
- Your business generates mostly passive income (rentals)
- You’re in your first year and still establishing the business
Common S-Corp Mistakes to Avoid
These errors can cost you more than the tax savings are worth.
Setting Salary Too Low
The #1 audit trigger. If the IRS determines your salary is unreasonably low, they’ll reclassify distributions as wages — plus penalties and interest. Don’t pay yourself $20K when the market rate for your role is $80K.
Electing Too Early
If your business isn’t consistently profitable above $60K, the payroll and accounting costs negate the savings. Wait until you have a stable, profitable year before electing. You can always elect mid-year or the following year.
Skipping Payroll
Some S-Corp owners take all income as distributions and skip payroll entirely. This is illegal. The IRS requires owner-employees to receive a reasonable salary via payroll with proper withholding. Non-compliance results in back taxes, penalties, and potential loss of S-Corp status.
Missing the Deadline
Form 2553 must be filed by March 15 for the current tax year. Miss it and you wait until next year. Late elections are sometimes accepted, but it requires a letter of reasonable cause and IRS approval — not guaranteed.
Ignoring State Taxes
Some states don’t recognize S-Corp status or impose separate entity-level taxes. California charges a 1.5% S-Corp tax. New York City taxes S-Corp income at the entity level. Check your state’s rules before assuming federal savings translate directly.
Not Tracking Basis
Shareholder basis determines how much you can deduct in losses and take in tax-free distributions. If you don’t track basis annually, you risk taking distributions that exceed your basis — triggering capital gains tax and IRS scrutiny.
Related Guides
Dive deeper into the topics covered in this comparison.
How to Start an LLC
Step-by-step guide to forming your LLC — benefits, costs, state requirements, and operating agreement essentials.
Read the guide →How to Incorporate
C-Corp and S-Corp formation, stock issuance, bylaws, QSBS eligibility, and Delaware incorporation explained.
Read the guide →LLC vs. C-Corp
When a C-Corp makes sense over an LLC — raising capital, stock options, QSBS, and investor expectations.
Read the comparison →LLC vs. S-Corp FAQ
Quick answers to the most common LLC vs. S-Corp questions.
Is an S-Corp better than an LLC?
Not inherently — they’re different things. An LLC is a legal entity; an S-Corp is a tax election. The right question is whether your LLC should elect S-Corp taxation. If your LLC nets $60K+ per year consistently, S-Corp taxation probably saves you money. Below that, default LLC taxation is simpler and cheaper.
Can an LLC be taxed as an S-Corp?
Yes. This is the most common path. You form an LLC (keeping its legal simplicity and flexibility) and then file IRS Form 2553 to elect S-Corp taxation. You get the liability protection and operational flexibility of an LLC with the payroll tax savings of an S-Corp.
When should I switch from LLC to S-Corp?
When your LLC consistently nets $60,000+ per year and you’re confident income will remain at that level. Don’t elect based on one good year — the added costs are ongoing. Most CPAs recommend waiting until you have 2+ quarters of stable profit above $60K before electing.
What is a “reasonable salary” for an S-Corp?
What the market would pay someone to do your job. The IRS looks at industry, experience, geography, and hours worked. Most CPAs recommend 40–60% of net profit as a starting point, adjusted based on salary surveys and industry data. Setting it too low is the #1 S-Corp audit trigger.
Can I lose my S-Corp election?
Yes. Your S-Corp status can be involuntarily terminated if you violate eligibility requirements — such as adding a foreign shareholder, issuing a second class of stock, or exceeding 100 shareholders. You can also voluntarily revoke the election by filing a statement with the IRS, but you generally can’t re-elect for 5 years.
Do I need a CPA for an S-Corp?
Strongly recommended. S-Corp tax returns (Form 1120-S) are more complex than Schedule C. You need to track shareholder basis, run payroll, issue K-1s, file quarterly payroll taxes, and determine a defensible reasonable salary. A CPA who specializes in S-Corps typically costs $1,000–$3,000/year — far less than the tax savings.
Can I switch back from S-Corp to LLC taxation?
Yes. You can revoke S-Corp status by filing a revocation statement signed by shareholders holding more than 50% of shares. However, once revoked, you generally cannot re-elect S-Corp status for 5 tax years. Make sure you’re committed before revoking.
Does S-Corp election work for rental income?
Generally no. Rental income is passive income and is not subject to self-employment tax in the first place — so S-Corp election provides no payroll tax savings. LLCs holding rental properties should typically keep default taxation. S-Corp elections only save money on earned/active income.
Ready to Start Your Business?
Whether you choose default LLC taxation or S-Corp election, the first step is forming your LLC. Get started today.
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