LLC vs Sole Proprietorship Taxes: Complete 2026 Comparison

The biggest misconception about LLCs? That they automatically save you on taxes. They don't. By default, a single-member LLC is taxed exactly the same as a sole proprietorship. The tax savings come from the options an LLC provides—options that sole proprietorships don't have.

This guide compares the actual tax treatment of both structures, shows you when an LLC saves money (and when it doesn't), and provides real calculations so you can make an informed decision.

Tax Basics: How Each Structure Works

Both sole proprietorships and single-member LLCs are pass-through entities by default. This means the business itself doesn't pay income tax—profits and losses pass through to your personal tax return.

Sole Proprietorship Taxation

• Reporting: Schedule C (Form 1040) attached to personal return
• Income tax: Personal tax rates (10% - 37% based on total income)
• Self-employment tax: 15.3% on net profit
• Estimated taxes: Quarterly payments required if you'll owe $1,000+
• State taxes: Varies by state (some have no income tax)

Single-Member LLC (Default Taxation)

• Reporting: Schedule C (Form 1040) attached to personal return
• Income tax: Personal tax rates (10% - 37%)
• Self-employment tax: 15.3% on net profit
• Estimated taxes: Quarterly payments required
• State taxes: Same as sole prop, plus potential LLC fees

Self-Employment Tax: The 15.3% Factor

Self-employment tax is often the biggest shock for new business owners. Both sole proprietors and default LLC members pay the full 15.3% rate:

2026 Self-Employment Tax Breakdown

How This Affects You

If your business earns $80,000 in net profit:

• Self-employment tax: $80,000 × 15.3% = $12,240
• Income tax: Varies based on total household income, filing status, deductions
• Total tax burden: Often 25-35% of net profit

The S-Corp Election Difference

Here's where LLCs gain an advantage. An LLC can elect S-Corp taxation, which changes how self-employment tax works:

• Without S-Corp: 15.3% SE tax on ALL net profit
• With S-Corp: 15.3% employment tax on REASONABLE SALARY only; distributions are not subject to employment tax

Sole proprietorships cannot elect S-Corp taxation. This is the primary tax advantage of an LLC.

LLC Tax Flexibility Advantages

While default taxation is identical, LLCs offer flexibility that sole proprietorships don't:

1. S-Corp Election (Employment Tax Savings)

LLCs can elect to be taxed as an S-Corp by filing Form 2553. This allows:

• Pay yourself a "reasonable salary" (subject to employment tax)
• Take remaining profits as "distributions" (NOT subject to employment tax)
• Potential savings of 15.3% on the distribution portion

2. C-Corp Election (Retained Earnings)

For businesses that want to reinvest profits rather than distribute them:

• 21% flat corporate tax rate
• Retain earnings in the company at lower tax rate
• Best for businesses planning significant reinvestment or seeking investors

3. Partnership Taxation (Multi-Member)

If you add partners, an LLC automatically becomes a partnership for tax purposes:

• File Form 1065 (partnership return)
• Income/losses pass through to partners via K-1s
• Flexible profit-sharing arrangements

4. QBI Deduction Optimization

The Qualified Business Income (QBI) deduction allows a 20% deduction on pass-through income. Both sole props and LLCs qualify, but LLCs have more flexibility:

• Can adjust salary vs. distribution mix to optimize QBI
• Better positioned to meet QBI requirements for higher earners

Deduction Comparison

Both structures can claim the same business deductions, but some are easier to claim with an LLC:

Health Insurance Deduction Nuance

Sole proprietors can deduct health insurance premiums, but the calculation is more complex. LLC members (especially with S-Corp election) have a clearer path to deducting health insurance as a business expense, potentially saving on both income and self-employment taxes.

When LLC Saves You Money

The LLC formation costs ($50-500 state fee + potential ongoing fees) and S-Corp election (payroll requirements, additional tax filing) only make sense when you hit certain profit thresholds.

Break-Even Analysis for S-Corp Election

*Assumes 50% of net profit as reasonable salary, 50% as distribution. Actual salary must be "reasonable" for your industry and role.

Real-World Tax Examples

Decision Framework

Use this decision tree to choose your structure:

Choose Sole Proprietorship If:

• Net profit under $40,000/year
• Just starting out / testing business viability
• Minimal liability risk (consulting, freelance writing)
• Want simplest possible tax situation
• No plans for partners or outside investment

Choose LLC (Default Taxation) If:

• Net profit $40,000-60,000/year
• Significant liability risk (client interactions, physical work)
• Want liability protection without S-Corp complexity
• Planning to add partners in the future
• Want flexibility to elect S-Corp later

Choose LLC with S-Corp Election If:

• Net profit consistently $60,000+
• Can justify a "reasonable salary" lower than total profit
• Comfortable with payroll requirements
• Willing to file additional tax forms (Form 1120-S)
• Tax savings exceed administrative costs

State-Level Considerations

Some states impose additional LLC costs that affect the calculation:

• California: $800 minimum annual LLC tax
• New York: Publication requirement ($1,000-2,000)
• Delaware: $300 annual franchise tax
• Most states: $50-200 annual report fee

Factor these into your break-even analysis.

Frequently Asked Questions