S-Corp vs LLC: Which Saves More on Taxes?

Choosing the right business structure can save you thousands in taxes. Here's a detailed comparison of S-Corps and LLCs for tax purposes.

By Michael Rodriguez · · 13 min read

S-Corp vs LLC: Which Saves More on Taxes?

One of the most common questions entrepreneurs ask: "Should I be an S-Corp or an LLC?" The answer depends on your income, expenses, and business situation.

Understanding the Basics

What is an LLC?

A Limited Liability Company is a business structure that provides:

  • Personal liability protection
  • Flexible management structure
  • Pass-through taxation (by default)

For tax purposes, a single-member LLC is taxed as a sole proprietorship. A multi-member LLC is taxed as a partnership.

What is an S-Corp?

An S-Corporation is a tax election, not a business structure. You can be:

  • An LLC that elects S-Corp taxation
  • A corporation that elects S-Corp status

S-Corps have specific requirements:

  • Maximum 100 shareholders
  • Only one class of stock
  • Shareholders must be US citizens or residents
  • Must pay reasonable salaries to owner-employees

The Big Tax Difference: Self-Employment Tax

Here's where it gets interesting.

LLC (Default Taxation)

All net business income is subject to self-employment tax of 15.3%:

  • 12.4% Social Security (up to $168,600 for 2024)
  • 2.9% Medicare (unlimited)

Example: $150,000 net income = $21,195 in self-employment tax

S-Corp Taxation

Only your salary is subject to payroll taxes. Remaining profits are distributions, not subject to self-employment tax.

Example with S-Corp:

  • Net income: $150,000
  • Reasonable salary: $80,000
  • Payroll taxes on salary: $12,240 (employee + employer portions)
  • Distribution: $70,000 (no self-employment tax!)
  • Savings: ~$8,955

The "Reasonable Salary" Requirement

The IRS requires S-Corp owner-employees to pay themselves a "reasonable salary" before taking distributions. This is based on:

  • Industry standards for similar roles
  • Your experience and responsibilities
  • What you'd pay someone else to do your job
  • Local wage rates

Warning: Setting salary too low is a red flag for IRS audits.

When Does S-Corp Make Sense?

S-Corp is Often Better When:

  • Net income exceeds $50,000-$60,000
  • You have stable, predictable income
  • You're comfortable with additional paperwork
  • You can pay yourself a reasonable salary

LLC May Be Better When:

  • Income is below $50,000
  • Income fluctuates significantly
  • You want simplicity
  • You have significant business losses

The Complete Cost Comparison

Additional S-Corp Costs:

  • Payroll processing: $500-$2,000/year
  • Additional tax filing (Form 1120S): $500-$1,500
  • Bookkeeping complexity: $500-$1,000/year
  • Registered agent: $100-$300/year

Total additional cost: ~$2,000-$5,000/year

Break-Even Analysis

Net Income LLC SE Tax S-Corp Savings Additional S-Corp Costs Net Benefit
$50,000 $7,065 $1,800 $2,500 -$700
$75,000 $10,597 $4,500 $2,500 $2,000
$100,000 $14,130 $7,000 $3,000 $4,000
$150,000 $21,195 $10,000 $3,500 $6,500

State Tax Considerations

Some states have additional taxes for S-Corps:

  • California: 1.5% franchise tax (minimum $800)
  • New York: Various metropolitan taxes
  • Texas: Margin tax applies to S-Corps

Always factor in state-specific costs.

How to Make the Switch

If You're an LLC Wanting S-Corp Status:

  1. File Form 2553 with the IRS
  2. Deadline: Within 75 days of start of tax year (or year you want election to begin)
  3. Set up payroll
  4. Start paying yourself a salary

Timeline for Existing LLCs:

  • File Form 2553 by March 15 for current year election
  • Or file within 75 days of forming a new entity

Common Mistakes to Avoid

  1. Salary too low: Invites IRS scrutiny
  2. Forgetting payroll taxes: Quarterly deposits required
  3. Missing filing deadlines: Form 2553 timing is critical
  4. Ignoring state requirements: Some states don't recognize S-Corp election
  5. Not running the numbers: S-Corp isn't always better

How Ledger Flow Helps

Our platform:

  • Tracks income to determine when S-Corp makes sense
  • Integrates with payroll for salary processing
  • Separates salary from distributions automatically
  • Provides reports for tax preparation

Decision Framework

Ask yourself:

  1. Is my net income consistently above $60,000?
  2. Am I comfortable with additional paperwork?
  3. Can I afford the additional administrative costs?
  4. Is my business stable enough for this structure?

If you answered "yes" to all four, S-Corp likely makes sense.

Take Action

  1. Calculate your projected net income
  2. Run the numbers using our framework
  3. Consult with a tax professional
  4. If switching, file Form 2553 before deadlines

The right structure can save you thousands annually. Don't leave money on the table.