What is S Corporation?
An S corporation is a tax designation that lets business owners reduce self-employment tax while maintaining liability protection. Learn how S-corp status works, when it makes sense, and how to elect it.
What Is an S Corporation?
An S corporation is a tax classification — not a type of business entity. An existing corporation or LLC elects S-corp tax status by filing Form 2553 with the IRS. The election allows the business to be taxed as a pass-through entity (like a partnership) while providing a mechanism to reduce self-employment tax. The key benefit: S-corp owners pay themselves a reasonable salary (subject to self-employment tax) and take the remaining profit as distributions (not subject to self-employment tax). This is the primary tax advantage over a standard single-member LLC taxed as a sole proprietorship. Schema DefinedTerm: S corporation — a corporation or LLC that has elected pass-through tax treatment under Subchapter S of the Internal Revenue Code, allowing profits and losses to flow through to shareholders' personal tax returns while enabling owner-employees to reduce self-employment tax by taking a portion of earnings as distributions rather than salary.
How S Corporation Tax Treatment Works
Single-Member LLC (Default — No S-Corp Election) Tax structure: - All net profit = self-employment income - Self-employment tax = Net profit × 92.35% × 15.3% - Income tax on net profit Example: $120,000 net profit - Self-employment tax: $120,000 × 92.35% × 15.3% = $16,968 S-Corporation Election Tax structure: 1. Owner pays themselves a salary (subject to SE tax + income tax) 2. Remaining profit is a distribution (income tax only, NO SE tax) 3. The distribution is not subject to self-employment tax Example: $120,000 net profit, $60,000 salary + $60,000 distribution - Salary: $60,000 × 92.35% × 15.3% = $8,484 SE tax - Distribution: $0 SE tax - Total SE tax: $8,484 (vs. $16,968 with no S-corp) Tax savings: $8,484/year — just from making the election and taking a salary.
The Reasonable Salary Requirement
This is where many S-corp owners get into trouble. The IRS requires that owners pay themselves a reasonable salary for the work they perform. What constitutes "reasonable" depends on: - Your professional role and responsibilities - Your experience and qualifications - Industry standards in your geographic area - The amount of time you spend on the work The danger: If you pay yourself a $0 salary or an unconscionably low salary while taking large distributions, the IRS can reclassify your distributions as salary — and assess back taxes, penalties, and interest. The safe harbor: Paying yourself a salary equal to what you'd pay an employee to do your job — typically 50-70% of your total profit — is generally defensible.
S Corporation Requirements
| Requirement | Detail | |---|---| | Entity type | Domestic corporation or eligible LLC | | Shareholders | Maximum 100; individuals and certain trusts only; no non-resident aliens | | Stock classes | Only one class of stock | | Business income | Must be from active business operations | | Form to file | IRS Form 2553 (Election by a Small Business Corporation) | | Who can elect | Corporations AND LLCs (LLCs can elect S-corp tax treatment) |
S Corp Compliance Requirements
S-corp status adds compliance complexity and cost: 1. Payroll Requirements You must run payroll — even if it's just yourself. This means: - Setting up a payroll system (Gusto, Rippling, ADP, or similar) - Filing payroll tax returns (Form 941 quarterly, Form 940 annually) - Withholding and paying employee taxes (even if you're the employee) - Potentially paying unemployment insurance 2. Additional Tax Filing - Form 1120-S (S-Corporation Income Tax Return) — annual - Schedule K-1 (your share of income/loss) — annual - State S-corp filings (varies by state) 3. Salary and Distribution Tracking You must formally document your salary amount, distributions, and the business rationale for the split. Estimated Additional Cost S-corp compliance typically costs $1,500-$4,000/year more than a simple Schedule C filing — accountant fees, payroll service, and your time.
Is S-Corp Status Right for You?
The Break-Even Calculation When S-corp likely makes sense: - Net self-employment earnings above $60,000-$80,000/year - You can legitimately pay yourself a salary of $40,000+ - You don't mind payroll administration - You can afford the additional accounting costs ($1,500+/year) When S-corp likely doesn't make sense: - Net earnings under $40,000/year (compliance costs exceed savings) - Your salary would need to be unrealistically low to generate meaningful distribution - You're in a low tax bracket (the distribution benefit is smaller) - You prefer simplicity over tax optimization The Decision Framework Step 1: Calculate estimated net profit for the year Step 2: Estimate salary (what you'd pay an employee to do your work) Step 3: Distribution = Net profit − Salary Step 4: Estimated SE tax savings = Distribution × 15.3% Step 5: Subtract additional compliance costs ($1,500-$4,000) Step 6: If net savings > $0, S-corp election is worth considering
Example: S Corporation Election in Action
A freelance software engineer, Carlos, earns $160,000/year net profit as a single-member LLC. Without S-corp election: - Self-employment tax: $160,000 × 92.35% × 15.3% = $22,639 - Income tax (roughly): ~$35,000 - Total tax: ~$57,639 With S-corp election (salary: $70,000, distribution: $90,000): - Salary SE tax: $70,000 × 92.35% × 15.3% = $9,890 - Distribution SE tax: $0 - Income tax (salary + distribution): ~$39,000 - Additional compliance costs: ~$2,500 - Total tax: ~$51,390 Annual tax savings: ~$6,249 After accounting for the additional $2,500 in compliance costs, Carlos saves approximately $3,749 in year one — growing as income increases.
S Corporation vs. C Corporation vs. LLC
| | S Corporation | C Corporation | LLC (Default) | |---|---|---|---| | Liability protection | Yes | Yes | Yes | | Taxation | Pass-through | Double taxation | Pass-through | | Self-employment tax on all profit | No (only on salary) | N/A for owner if structured | Yes | | Compliance complexity | Medium | High | Low | | Can have investors | Limited (100 max, US residents) | Unlimited, any investors | Limited | | Best for | High-earning freelancers | Companies seeking VC | Most freelancers |
Related Terms
- LLC — the structure that often makes the S-corp election - Self-Employment Tax — the tax S-corp election reduces - Independent Contractor — the work arrangement S-corp owners typically have - Quarterly Estimated Taxes — S-corp owners still pay quarterly estimates - Payroll Tax — required for S-corp salary payments
Related Templates
S-Corp Tax Savings Calculator Calculate whether S-corp election would save you money based on your estimated profit. View Template → Invoice Template Track income for an S-corp the same way you would for any freelance business. View Template → Quarterly Tax Estimator Account for S-corp salary and distribution taxation in your quarterly estimates. View Template →
Related Guides
Freelancer Tax Guide 2026 When and how to consider S-corp election as part of your tax planning strategy. Read Guide → Complete 1099 Freelancer Tax Guide 2026 Understanding entity structures and tax elections available to high-earning freelancers. Read Guide → Key Takeaways: 1. S-corp is a tax election, not a business structure — LLCs and corporations can both elect it 2. The benefit: you pay SE tax only on your salary, not on distributions — saving up to 15.3% on the distribution portion 3. You must pay yourself a reasonable salary — too low invites IRS scrutiny 4. S-corp typically makes sense when net earnings exceed $60,000-$80,000/year 5. Eonebill tracks income and expenses regardless of your tax structure — start free Considering S-corp election? Calculate your potential savings with Eonebill. Start free → View Pricing → | Glossary Home → | Home →