An LLC and an S corp are not competing entity types: an LLC is a legal structure you form with your state, while an S corp is a tax election an LLC can add by filing IRS Form 2553. An LLC taxed as an S corp pays the 15.3% self-employment tax only on the owner's W-2 salary; a default LLC pays it on every dollar of net profit. The catch is cost: S corp status adds roughly $1,500-$4,000 per year in payroll and tax-prep expenses, so the election typically pays off once net profit consistently exceeds $50,000-$60,000.
Key takeaways:
| Factor | LLC (Default Tax) | LLC with S Corp Election |
|---|---|---|
| Legal structure | LLC filed with state | Same LLC — no change |
| Federal tax filing | Schedule C (Form 1040) | Form 1120-S + Schedule K-1 |
| Self-employment tax | 15.3% on all net profit | 15.3% only on salary portion |
| Owner compensation | Distributions (flexible) | Reasonable salary required + distributions |
| Payroll required | No | Yes — must run W-2 payroll |
| Annual filing cost | $0-$500 (tax prep) | $1,500-$4,000 (1120-S + payroll) |
| Best for | Under $50K profit | Over $50K-60K profit |
A Limited Liability Company (LLC) is a state-level legal structure that separates your personal assets from your business. You form it by filing articles of organization with your state and paying a filing fee ($35-$500 depending on the state).
For federal tax purposes, the IRS treats a single-member LLC as a "disregarded entity." That means you report all income and expenses on Schedule C attached to your personal Form 1040. The business doesn't file its own tax return.
Tax treatment by default:
For a deeper comparison of LLCs with sole proprietorships, see our sole proprietorship vs LLC guide.
Legal citation: Treas. Reg. §301.7701-3 governs default entity classification for LLCs.
Yes. Any eligible LLC can be taxed as an S corp by filing Form 2553 with the IRS; the LLC itself doesn't change, only its federal tax treatment does. An S corporation is not a type of business entity — it's a tax classification under Subchapter S of the tax code.
Once the election takes effect, the IRS treats your LLC differently:
That last point is where the savings happen. The gap between your reasonable salary and your total profit escapes the 15.3% self-employment tax.
Not every business can elect S corp status. IRC §1361 sets these requirements:
For most single-member LLCs and small partnerships, these requirements aren't an issue.
Legal citation: IRC §1361(b) defines S corporation eligibility requirements.
The self-employment tax rate for 2026 is 15.3%: 12.4% for Social Security (on income up to $184,500) plus 2.9% for Medicare (no income cap). As a default LLC, you owe this on every dollar of net profit.
With an S corp election, here's what changes:
The savings come entirely from the distributions that skip FICA.
Assumptions: single filer, 2026 standard deduction ($16,100), no other income, before the QBI deduction (covered below). Total federal tax = SE/payroll taxes plus federal income tax.
| Net Profit | LLC Total Federal Tax | S Corp Total Federal Tax (salary) | Tax Difference | Net After ~$2,500 S Corp Costs |
|---|---|---|---|---|
| $60,000 | ~$12,990 | ~$10,770 ($40,000 salary) | ~$2,220 | ~break-even |
| $100,000 | ~$25,750 | ~$21,340 ($60,000 salary) | ~$4,410 | ~$1,900 saved |
| $200,000 | ~$61,580 | ~$48,850 ($90,000 salary) | ~$12,730 | ~$10,200 saved |
The pattern: Below about $50,000-$60,000 in net profit, the tax savings get eaten by payroll processing and the more complex return. Above that threshold, the savings grow rapidly with income.
For the line-by-line version of this math (including payroll tax splits, the deductible half of SE tax, and verdicts at $75K, $100K, $150K, and $200K), see our companion guide: how an S corp reduces self-employment tax. To see your current burden, use the Self-Employment Tax Calculator.
The IRS requires S corp owner-employees to pay themselves a "reasonable salary" before taking distributions. You cannot set your salary at $10,000 and take $190,000 in distributions to minimize payroll taxes. There is no published formula; the IRS weighs your qualifications, duties, hours, comparable market wages, and the company's revenue.
While there's no universal rule, these ranges are commonly used as starting points:
| Net Profit | Typical Reasonable Salary Range |
|---|---|
| $60,000 | $35,000-$45,000 |
| $100,000 | $50,000-$70,000 |
| $150,000 | $65,000-$90,000 |
| $200,000+ | $80,000-$120,000 |
A common guideline: salary should represent roughly 50-70% of net profit for most service-based businesses. Businesses with significant capital investment or employees doing most of the work may justify a lower percentage.
IRS enforcement: The IRS has won multiple court cases against S corp owners who paid unreasonably low salaries. In David E. Watson, P.C. v. United States (8th Cir. 2012), an accountant paid himself a $24,000 salary while taking about $200,000 a year in distributions; the court upheld reclassifying part of those distributions as wages, with back payroll taxes and penalties.
Our how an S corp reduces self-employment tax guide covers the full IRS factor list, the 60/40 rule of thumb, and what triggers audits. For a quick number, try our S-Corp Salary Calculator.
Legal citation: IRS Revenue Ruling 74-44 and IRC §3121(a) govern reasonable compensation requirements.
Expect an S corp to cost $1,500-$4,000 more per year than a default LLC. A default LLC's only recurring federal cost is Schedule C preparation ($0-$500); the S corp adds all of the following:
| Item | Estimated Annual Cost |
|---|---|
| Payroll processing | $500-$1,500/year (Gusto, ADP, etc.) |
| Form 1120-S preparation | $800-$2,000 (CPA-prepared) |
| Quarterly payroll tax filings | Included in payroll service or $200-$400 |
| State franchise/corporate tax | Varies ($0-$800+ by state) |
| W-2 and year-end forms | Included in payroll service |
Once you elect S corp status, you must:
Some states add complications:
Check our LLC Annual Tax and Fee Calculator for state-specific costs.
If you haven't already, file articles of organization with your state. You need a legal entity before you can make a tax election.
Apply for an Employer Identification Number from the IRS at irs.gov/ein. It's free and takes about 5 minutes online.
For a complete guide to EINs and LLC formation, see our EIN and LLC startup guide.
Form 2553 is the S corp election form. File it with the IRS by:
Late election relief: If you miss the deadline, the IRS may grant late election relief under Revenue Procedure 2013-30 if you can show reasonable cause. File Form 2553 with a statement explaining why you're late.
Before the election takes effect, set up a payroll system. You'll need:
Begin processing W-2 payroll at your determined reasonable salary. Most S corp owners pay themselves monthly or semi-monthly.
Legal citation: IRC §1362(b) governs the timing and requirements for S corp elections.
The formula: (net profit minus reasonable salary) × 15.3% must exceed your added S corp costs (typically $2,000-$3,000/year).
The election is also reversible: you can revoke S corp status if the math stops working. Getting the timing right matters more than getting it early.
Both default LLCs and S corps qualify for the Qualified Business Income (QBI) deduction — a 20% deduction on qualified business income under IRC §199A, made permanent by the One Big Beautiful Bill Act.
Key difference for S corps: The QBI deduction applies to your pass-through income (distributions), NOT your W-2 salary. Since your salary is W-2 income, it doesn't qualify. This means the S corp election can reduce your QBI deduction amount.
Example at $100,000 net profit: A default LLC gets a QBI deduction of about $100,000 × 20% = $20,000. An S corp paying a $60,000 salary gets the deduction only on the $40,000 of pass-through income: $40,000 × 20% = $8,000. The QBI reduction partially offsets the self-employment tax savings, so your CPA should model both together to find the optimal salary-to-distribution ratio.
Legal citation: IRC §199A governs the QBI deduction. IRC §199A(c)(4) excludes reasonable compensation from QBI.
Problem: A new business owner earning $40,000 reads about S corp tax savings and immediately files Form 2553. They spend $2,500 on payroll and tax prep, saving only $1,200 in self-employment tax.
Impact: Net loss of $1,300, plus the headache of running payroll and filing a corporate return.
Solution: Wait until your net profit consistently exceeds $60,000 before electing. The keyword is "consistently" — one good month doesn't justify the ongoing compliance burden.
Problem: An S corp owner earning $150,000 pays themselves a $30,000 salary and takes $120,000 in distributions to maximize tax savings.
Impact: IRS reclassification of distributions as wages, plus back taxes, interest, and penalties. That's the Watson fact pattern: a $24,000 salary against $200,000 in distributions lost in court.
Solution: Research comparable compensation using BLS wage data, industry surveys, and your CPA's guidance. Document your methodology. A salary of 50-70% of net profit is a defensible starting point for service businesses.
Problem: An S corp owner takes owner draws instead of processing formal W-2 payroll, or skips payroll during slow months.
Impact: The IRS can reclassify all distributions as wages, eliminating any tax savings and adding penalties.
Solution: Set up automated payroll from day one of your S corp election. Pay yourself consistently, even if it means adjusting the salary amount during the year.
Problem: Electing S corp status without checking state-level taxes. California, for example, charges a 1.5% tax on S corp net income in addition to the $800 minimum franchise tax.
Impact: State taxes can significantly reduce — or even eliminate — the federal tax savings.
Solution: Model the full tax picture including state taxes before electing. Some states are S corp-friendly (Texas, Florida, Wyoming), while others add meaningful cost (California, New York, Illinois).
The S corp decision depends on one number you need all year, not just in April: your running net profit. Jupid is an AI accountant in WhatsApp and iMessage that connects to your business bank account, categorizes transactions with 95.9% accuracy, and keeps that profit figure current. Ask "What's my net profit so far this year?" in chat and compare the answer against the $50,000-$60,000 break-even line whenever you want, instead of discovering in March that you left FICA savings on the table.
| Item | 2026 Amount |
|---|---|
| Self-employment tax rate | 15.3% (12.4% SS + 2.9% Medicare) |
| Social Security wage base | $184,500 |
| Standard deduction (single) | $16,100 |
| QBI deduction | Up to 20% of qualified business income (permanent under OBBBA) |
| Additional Medicare tax | 0.9% on earnings over $200,000 |
| Form 2553 deadline (calendar year) | March 16, 2026 |
| Form 1120-S due date | March 16, 2026 (or Sept 15 with extension) |
Disclaimer
This article provides general information about S corporation elections and LLC taxation and should not be considered legal or tax advice. Tax savings from S corp elections vary significantly based on income level, state of residence, industry, and individual circumstances. The "reasonable salary" determination is fact-specific and should be made with guidance from a qualified tax professional. For advice specific to your situation, consult with a CPA or tax attorney.
Tax Year: 2026 Last Updated: July 7, 2026
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