Compare tax treatment, not two mutually exclusive entities
A domestic single-member LLC owned by an individual is generally disregarded for federal income-tax purposes unless it elects corporate treatment. An operating business commonly reports on Schedule C, although the appropriate schedule depends on the activity. A domestic LLC with multiple members generally defaults to partnership treatment. An eligible LLC can elect S-Corp treatment.
| Question | LLC with default sole-proprietor treatment | LLC or corporation taxed as an S-Corp |
|---|---|---|
| Business income return | Generally Schedule C with the owner’s return | Form 1120-S and shareholder Schedule K-1 |
| Working owner’s pay | Draws are not employee wages | Reasonable compensation for services paid through payroll |
| Employment taxes | Self-employment tax on applicable net earnings | Payroll taxes on wages; S-Corp pass-through business income generally is not self-employment income |
| Payroll for other employees | Required when the business has employees | Required when the business has employees, including a working owner receiving compensation |
| Ownership limits | Federal default classification depends on ownership | Eligibility restrictions include permissible shareholders, no more than 100 shareholders and one class of stock |
| QBI deduction | Potentially available, subject to adjustments and limits | Potentially available on qualifying pass-through income; owner wages are excluded |
| Administrative costs | Depend on the business and state | Include payroll, a separate business return and compensation documentation |
How self-employment tax works
The general self-employment tax calculation starts with 92.35% of net self-employment earnings, not 100% of profit. The regular combined rate is 15.3%: 12.4% Social Security and 2.9% Medicare. Social Security has an annual earnings ceiling; Medicare does not.
For 2026, the Social Security wage base is $184,500. Other wages can use some or all of that ceiling. Additional Medicare Tax can apply at higher income levels, depending on filing status and combined wages and self-employment income.
A multi-member LLC introduces partnership rules. Treatment can differ by the member’s role and type of income; do not assume every partnership dollar has the same employment-tax treatment. An LLC owner’s cash withdrawal also does not determine the amount of taxable business profit.
What an S-Corp election changes
A working shareholder must receive reasonable compensation for services before payments are treated as non-wage distributions. The business must handle payroll withholding, employer payroll taxes, deposits and reporting. An S-Corp generally passes income and deductions through to shareholders, although entity-level federal taxes can apply in certain cases.
Salary is subject to payroll taxes. Qualifying S-Corp pass-through business income generally is not subject to self-employment tax. That does not make it free of income tax. Shareholders can owe income tax on allocated earnings even when the company retains the cash; a later distribution also has basis rules.
There is no universal profit level at which an election pays for itself. A contractor whose earnings mainly reflect the owner’s own labor may need substantial wages, leaving less income outside payroll than a simple percentage model suggests.
Sources for this section
A worked example with employer payroll tax included
Illustration only: compare $150,000 of business profit before owner salary and employer payroll taxes. Assume $60,000 has been independently supported as reasonable annual wages, no other wages, no Additional Medicare Tax, and no other adjustments. This salary is an example input, not a recommendation.
| Calculation | Sole proprietor | S-Corp |
|---|---|---|
| Profit before owner compensation and employer payroll tax | $150,000 | $150,000 |
| Self-employment tax base: profit × 92.35% | $138,525 | Not applicable |
| Owner W-2 wages | Not applicable | $60,000 |
| Regular self-employment tax: base × 15.3% | $21,194 | Not applicable |
| Employee FICA: wages × 7.65% | Included in SE calculation | $4,590 |
| Employer FICA: wages × 7.65% | Included in SE calculation | $4,590 |
| Combined regular employment tax | $21,194 | $9,180 |
| Business profit after salary and employer FICA | Not applicable | $85,410 |
The illustrated difference in regular employment taxes is approximately $12,014. It is not net tax savings. The comparison excludes federal and state income-tax effects, QBI, unemployment taxes, payroll and return-preparation costs, retirement contributions, credits and other household facts.
The old shortcut, “profit minus salary, multiplied by 15.3%,” misses the self-employment tax adjustment, employer payroll expense and wage ceiling. A decision model should compare complete returns and business costs using the same starting profit.
Reasonable salary comes from the work performed
The IRS does not provide a 40–60% of profit safe harbor. Document the services, hours, responsibilities, training, experience and comparable pay for similar work. Also consider whether receipts come from the owner’s personal services, other employees’ work or capital and equipment.
For a construction owner who estimates, supervises jobs, manages crews and handles customer relationships, the analysis should reflect those roles. A salary chosen solely to reach a desired tax saving is not a compensation study.
Retain the job description, time allocation, wage comparisons and explanation for the final amount. Revisit compensation when the owner’s work or the business changes.
Sources for this section
Eligibility, timing and practical readiness
Review permissible shareholders, shareholder consent, the one-class-of-stock rule and other eligibility requirements before filing Form 2553. Most partnerships and corporations cannot be shareholders; certain trusts and estates can qualify. Nonresident alien shareholders generally are not permitted.
The general election deadline is no more than two months and 15 days after the beginning of the tax year the election is to take effect, or during the preceding tax year. Calendar-year businesses often use the March deadline, with applicable weekend and holiday rules. It is not always “75 days after formation.”
Late-election relief may be available if its conditions are met. Sending a late form with a short explanation does not guarantee relief. Confirm the effective date and IRS acceptance, then coordinate payroll and return filing.
- Can the business support defensible wages and the associated payroll costs?
- Are ownership and planned investment compatible with S-Corp rules?
- Will state and local taxes change?
- How will owner benefits, retirement contributions and QBI change?
- Are the records ready for a separate corporate return?
Sources for this section
State and local taxes can change the outcome
No individual income tax does not mean no business-level tax. Check where the business operates, not just where it was formed. These are examples, not a complete multistate filing analysis.
- California: S corporations generally face a 1.5% tax and an $800 minimum franchise tax, with exceptions. An LLC electing corporate treatment follows that classification; do not automatically add the separate default-LLC annual tax and fee as though both systems apply unchanged.
- Texas: the franchise-tax no-tax-due threshold for the 2026 report is $2.65 million in annualized total revenue. Information-report obligations can remain even when no tax is due.
- Tennessee: corporations and LLCs can owe franchise and excise taxes, subject to exemptions. Describing it as automatically favorable to S-Corps because it lacks an individual income tax misses these business taxes.
- New York: review the state S election and fixed-dollar minimum tax. New York City does not recognize the federal or state S election for its General Corporation Tax.
- Florida: S corporations generally avoid Florida corporate income tax unless they have federal taxable income at the entity level; confirm filing requirements and any exception.
- New Hampshire: the Business Profits Tax and possible Business Enterprise Tax need review. S status does not remove them.
Sources for this section
- California FTB: S corporations ↗
- California FTB: entity classification ↗
- Texas Comptroller: 2026 franchise-tax reports ↗
- Tennessee: franchise and excise taxes ↗
- New York: S corporation return instructions ↗
- NYC: General Corporation Tax ↗
- Florida: corporate income tax ↗
- New Hampshire: Business Profits Tax ↗
QBI belongs in the comparison
Eligible owners may deduct up to 20% of qualified business income, subject to taxable-income and other limits. QBI is not simply revenue or cash distributed. Attributable deductions, including certain retirement contributions, self-employed health insurance and the deductible part of self-employment tax, can reduce it. S-Corp reasonable compensation is excluded from QBI.
The deduction continues under current law; it did not expire after 2025. For 2026, the limitation phase-in starts at taxable income before the QBI deduction of $201,750 for single filers, $403,500 for joint filers, and $201,775 for married filing separately. The corresponding upper amounts are $276,750, $553,500 and $276,775.
Those ranges affect wage/property limits and the treatment of specified service trades or businesses. They are not a universal phaseout for every business. An entity comparison should model the deduction rather than assume employment-tax savings always outweigh a change in QBI.
Common mistakes to avoid
- Using a salary ratio as an IRS rule. Document the actual work and comparable compensation.
- Counting distributions as tax-free. Separate employment tax, income tax and shareholder basis.
- Ignoring employer payroll taxes. They reduce the profit available after salary.
- Assuming an election fixes payroll retroactively. Election relief and payroll compliance are separate questions.
- Using an unsupported “typical savings” figure. Compare the actual business and household facts, with administrative costs.
Bring a recent return, current profit-and-loss statement, owner-pay records, other wage income and state filing history to the discussion. The useful output is a documented comparison, including the circumstances under which the election would stop making sense.
Frequently asked questions
When should I switch from LLC to S-Corp taxation?
There is no universal profit threshold. Compare reasonable wages, employer payroll taxes, QBI, state taxes, benefits and administrative costs using your actual business and household facts.
Can an LLC elect S-Corp status?
Yes, an eligible LLC can elect S-Corp tax treatment. It remains an LLC under state law. Confirm shareholder eligibility, consent and the effective date before filing Form 2553.
Is 40–60% of profit a reasonable salary rule?
No. The IRS evaluates the services performed and relevant compensation facts. A percentage of profit is not an IRS safe harbor.
Do S-Corp distributions avoid every tax?
No. S-Corp pass-through business income generally is not subject to self-employment tax, but wages are subject to payroll tax and owners can owe income tax on passed-through earnings. Distributions also have shareholder-basis rules.
What are the disadvantages of an S-Corp election?
It adds payroll responsibilities, a separate business tax return, shareholder restrictions and compensation documentation. State taxes, benefit treatment and administrative costs can offset a federal employment-tax advantage.
How much will an S-Corp save me?
A generic salary-and-profit calculator cannot establish net savings. A valid comparison includes both sides of payroll tax, income-tax effects, QBI, state rules and the costs of compliance.