LLC vs S-Corp: What Every Business Owner Should Know
LLC and S-Corp are two terms that often get confused. They are not the same thing. An LLC is a legal entity you file with your state. An S-Corp is a tax classification you elect with the IRS. Understanding the difference can save you thousands of dollars each year.
An LLC is a business structure. An S-Corp is a tax election. You can have an LLC taxed as an S-Corp to potentially save on self-employment taxes when your profits exceed about $40,000 per year.
What Are LLC and S-Corp?
An LLC (Limited Liability Company) is a legal entity you create by filing Articles of Organization with your state. It protects your personal assets from business debts and lawsuits. By default, the IRS taxes a single-member LLC as a sole proprietorship and a multi-member LLC as a partnership.
An S-Corp (S-Corporation) is not a business structure at all. It is a tax classification you choose by filing Form 2553 with the IRS. When you elect S-Corp status, your LLC stays the same legally. The only thing that changes is how the IRS calculates your taxes.
Think of it this way: LLC is the container. S-Corp is a label you can put on that container to change how taxes work.
Key Differences
Structure vs Tax Election
An LLC is a legal entity recognized by your state. It exists in the real world with its own bank accounts, contracts, and liability protections. An S-Corp election is a form you file with the IRS. It changes nothing about your LLC's legal standing. Your operating agreement, state registration, and liability protection all remain the same.
Self-Employment Tax
This is the biggest reason people consider S-Corp status. With a default LLC, all of your net profit is subject to 15.3% self-employment tax (12.4% Social Security + 2.9% Medicare). Every dollar of profit gets hit with this tax.
With S-Corp election, you split your income into two buckets:
- Salary: Subject to payroll taxes (equivalent to SE tax)
- Distributions: NOT subject to self-employment tax
The distributions are where the savings come from. Any profit above your salary avoids the 15.3% tax.
Payroll Requirements
A default LLC has no payroll obligations. You simply take draws from the business when you need money.
With S-Corp election, you must pay yourself a "reasonable salary" through a formal payroll system. This means:
- Setting up payroll (Gusto, ADP, or similar)
- Withholding federal and state income taxes
- Filing W-2 forms at year-end
- Paying employer payroll taxes quarterly
Complexity and Cost
An S-Corp election adds real complexity to your business. You need a payroll system ($30-100/month), a separate tax return (Form 1120-S), and typically a CPA to handle the additional filing requirements. Default LLC taxation is straightforward by comparison. You report income on Schedule C (single-member) or Form 1065 (multi-member) and pay your self-employment tax.
The IRS scrutinizes S-Corp owners who set unreasonably low salaries. If you earn $200,000 and pay yourself a $30,000 salary, expect questions. Your salary must reflect what someone with your skills and experience would earn in a similar role.
Side-by-Side Comparison
| Feature | LLC (Default Tax) | LLC with S-Corp Election |
|---|---|---|
| Formation | File Articles of Organization with state | Same LLC formation + File Form 2553 with IRS |
| Tax Filing | Schedule C (single-member) or Form 1065 (multi-member) | Form 1120-S + K-1 for each owner |
| Self-Employment Tax | 15.3% on all net profit | Payroll taxes on salary only; distributions exempt |
| Salary Requirement | None | Must pay "reasonable salary" to owner-employees |
| Payroll | Not required | Required (W-2, quarterly filings) |
| Distributions | Owner's draws, no restrictions | After reasonable salary is paid; tax-advantaged |
| Accounting Complexity | Low | Moderate to High |
| Annual Cost to Maintain | $0-500 (state fees, basic bookkeeping) | $2,000-5,000 (payroll, CPA, additional filings) |
| Best For | Businesses earning under $40K profit | Businesses earning $40K+ profit consistently |
| IRS Scrutiny Level | Low | Moderate (salary reasonableness reviews) |
| Ownership Restrictions | No restrictions | 100 or fewer US citizen/resident members, one class of stock |
Tax Calculation Example
Let's compare both options using $100,000 in net business profit to see the real difference.
Scenario: $100,000 net profit
Default LLC
- Net profit: $100,000
- SE tax base (92.35%): $92,350
- SE tax (15.3%): $14,130
- Payroll costs: $0
- Additional accounting: $0
- Total tax + admin costs: ~$14,130
LLC with S-Corp Election
- Reasonable salary: $50,000
- Payroll taxes on salary (15.3%): $7,650
- Distribution: $50,000
- SE tax on distribution: $0
- Payroll service (~$50/mo): $600
- Additional CPA costs: ~$1,500
- Total tax + admin costs: ~$9,750
Annual savings: ~$4,380
In this example, the S-Corp election saves roughly $6,480 in self-employment taxes. After subtracting the cost of payroll and additional accounting ($2,100), the net savings are about $4,380 per year.
At lower profit levels, the savings shrink. At $30,000 in profit, for example, your reasonable salary would consume most of the income, leaving little room for distributions. The added costs of payroll and accounting could actually make you worse off.
When to Elect S-Corp
The general rule of thumb: S-Corp election starts making sense when your net profit consistently exceeds $40,000 per year. This is the approximate break-even point where the SE tax savings outweigh the added costs.
S-Corp election is a good fit when:
- Consistent annual profit above $40,000-50,000 after business expenses
- Your business is stable with predictable revenue, not a new venture still finding its footing
- You can justify a reasonable salary that is less than your total profit
- You are willing to manage payroll and additional accounting requirements
- You are a US citizen or resident alien (non-residents cannot elect S-Corp)
S-Corp election is NOT a good fit when:
- Your LLC is brand new with unpredictable income
- Your annual profit is below $40,000
- You are a non-US resident (S-Corp requires US citizenship or residency)
- Your business has foreign corporate or partnership owners
- You want to keep things as simple as possible
You can always start as a default LLC and elect S-Corp status later when your revenue grows. There is no penalty for waiting. File Form 2553 within 75 days of the start of the tax year, or by March 15 for the current year.
How to Make the Election
Converting your LLC's tax status to S-Corp is a straightforward process with the IRS. You do not need to change anything with your state.
- Confirm eligibility. Your LLC must have 100 or fewer members, all of whom are US citizens or resident aliens. You can only have one class of ownership (equal distribution rights). The LLC cannot be owned by another corporation or partnership.
- Calculate potential savings. Compare your current self-employment tax burden against the combined cost of payroll processing, a reasonable salary, and additional accounting fees. If the savings are less than $2,000 per year, it may not be worth the hassle.
- File Form 2553. Submit IRS Form 2553 (Election by a Small Business Corporation) within 75 days of your LLC's formation date or by March 15 for the current tax year. Late elections are sometimes accepted with reasonable cause.
- Set up payroll. Register for federal and state payroll taxes. Choose a payroll provider like Gusto, ADP, or QuickBooks Payroll. You will need to withhold income taxes and pay employer payroll taxes quarterly.
- Pay yourself a reasonable salary. Determine a salary that reflects what someone in your role and industry would earn. The IRS uses comparable wages, time spent, and duties performed to evaluate whether a salary is reasonable.
Try our free LLC Tax Estimator: See how much you could save with S-Corp election based on your actual revenue.
Frequently Asked Questions
Frequently Asked Questions
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