Entity Setup
Choosing the Right Business Entity: A Case Study on Tax Implications
An illustrative case study comparing the tax consequences of different business entity structures to guide entrepreneurs in making informed decisions.
By NomadicTax Research Team • 8 min read • November 13, 2025
## Introduction
Selecting the appropriate business entity is a critical decision for entrepreneurs, as it influences taxation, liability, and operational flexibility. This case study examines the tax implications of various entity structures.
## Case Study: Sarah's Consulting Business
**Scenario**: Sarah plans to start a consulting firm and is evaluating the following entity options:
1. **Sole Proprietorship**
2. **Limited Liability Company (LLC)**
3. **S Corporation (S Corp)**
4. **C Corporation (C Corp)**
### Tax Implications
**1. Sole Proprietorship**
- **Taxation**: Income reported on Sarah's personal tax return (Form 1040) via Schedule C.
- **Self-Employment Tax**: Subject to 15.3% self-employment tax on net earnings.
- **Liability**: Personal liability for business debts.
**2. Limited Liability Company (LLC)**
- **Taxation**: Default is pass-through taxation; income reported on personal tax return.
- **Flexibility**: Can elect to be taxed as an S Corp or C Corp.
- **Liability**: Limited personal liability.
**3. S Corporation (S Corp)**
- **Taxation**: Pass-through taxation; income and losses reported on shareholders' personal tax returns.
- **Self-Employment Tax**: Shareholders can receive a reasonable salary (subject to payroll taxes) and take additional profits as distributions (not subject to self-employment tax).
- **Restrictions**: Limited to 100 shareholders; all must be U.S. citizens or residents.
**4. C Corporation (C Corp)**
- **Taxation**: Subject to corporate income tax; potential double taxation when profits are distributed as dividends.
- **Liability**: Limited personal liability.
- **Flexibility**: No restrictions on ownership; can have multiple classes of stock.
### Practical Example
Assume Sarah's consulting firm generates $100,000 in net income.
- **Sole Proprietorship**:
- Income Tax: Based on individual tax rates.
- Self-Employment Tax: $100,000 x 15.3% = $15,300.
- **LLC**:
- Similar to Sole Proprietorship unless electing S Corp taxation.
- **S Corp**:
- Salary: $60,000 (subject to payroll taxes).
- Distribution: $40,000 (not subject to self-employment tax).
- Payroll Taxes: Approximately $9,180 (15.3% of $60,000).
- **C Corp**:
- Corporate Tax: $100,000 x 21% = $21,000.
- Dividend Tax: If $79,000 distributed as dividends, subject to individual tax rates.
### Conclusion
Each entity structure offers distinct tax advantages and considerations. Entrepreneurs should assess their specific circumstances and consult with tax professionals to determine the most beneficial structure.
**References**:
- [IRS Business Structures](https://www.irs.gov/businesses/small-businesses-self-employed/business-structures)
- [IRS Self-Employment Tax](https://www.irs.gov/businesses/small-businesses-self-employed/self-employment-tax-social-security-and-medicare-taxes)