LLC vs. S-Corp for Contractors: What the Terms Actually Mean

An LLC is a state-law liability structure, while S-corp is a federal tax election you can add to that LLC — not a competing entity type. Most contractors should form an LLC first, then elect S-corp taxation once net income supports it, typically above $75,000–$80,000. The LLC vs. S-corp question is one of the most searched business structure questions among contractors — and one of the most frequently misunderstood, because it conflates two different systems: state law (what kind of entity you are) and federal tax law (how you’re taxed).

What Do “LLC” and “S-Corp” Actually Mean?

LLC is a state law entity that provides liability protection. You form an LLC with your state’s secretary of state and pay an annual fee. The LLC separates your personal assets from your business liabilities — meaning if a client sues your business or a subcontractor gets injured, your personal home and savings are generally protected.

S-Corp is a federal tax classification you elect with the IRS by filing Form 2553. It’s not a separate entity type. A corporation or an LLC can both elect to be taxed as an S-corp. The election changes how your business income is taxed — but doesn’t change your state law entity type.

The correct comparison is not “LLC vs. S-corp.” It’s:

• LLC (disregarded entity / sole prop): Liability protection + all profit on Schedule C + full SE tax
• LLC with S-corp election: Liability protection + profit split into salary and distribution + reduced SE tax on distributions
• Corporation with S-corp election: Similar tax treatment, different state law characteristics

For most contractors, the right answer is: form an LLC, then elect S-corp taxation when income supports it.

What Is the Default Tax Treatment for an LLC as a Disregarded Entity?

When you form a single-member LLC and don’t elect any special tax treatment, it defaults to a “disregarded entity.” For tax purposes, the IRS treats it exactly like a sole proprietorship — income and expenses on Schedule C, full SE tax on net profit.

Advantages: Simple. No payroll. No separate return. One tax form.

Disadvantages: Full 15.3% SE tax on all net profit up to the Social Security wage base. At $150,000 in net income, that’s ~$19,243 in SE tax.

Who should stay here: Contractors with net income under $75,000–$80,000. At that level, S-corp administrative overhead typically exceeds the SE tax savings.

What Happens When You Add an S-Corp Election to Your LLC?

When you elect S-corp treatment on your LLC:

1. You pay yourself a reasonable W-2 salary
2. Payroll taxes apply to the salary only
3. Remaining profit flows through as a K-1 distribution — no SE tax
4. You file Form 1120-S annually (S-corp return) in addition to your personal return
5. You must use a payroll service

The tax savings come from the gap between your salary and your total income. That gap is not subject to payroll taxes.

At $200,000 net income with a $90,000 salary:

• SE tax without S-corp: ~$25,900
• Payroll taxes with S-corp: ~$13,770
• Gross savings: ~$12,130
• Annual overhead (payroll, return, bookkeeping): ~$5,000–$8,000
• Net annual savings: $4,130–$7,130

At $350,000: net savings increase to $20,000+. At $500,000: $30,000+.

What Contractor-Specific Factors Affect the LLC-vs-S-Corp Decision?

Workers’ compensation: As an S-corp, your W-2 salary is typically the workers’ comp premium base. Higher salary = higher premium. For roofers, ironworkers, and other high-risk trades with expensive workers’ comp class codes, this can reduce or eliminate some of the payroll tax savings. Run the full model including workers’ comp before making the decision.

Subcontractors vs. employees: The S-corp structure doesn’t change your 1099 obligations to subs. But if you’re planning to hire W-2 employees, the S-corp structure is already in place and makes the transition cleaner.

Equipment financing: Lenders treat S-corps and sole props differently. Some lenders prefer the separate legal entity; others underwrite based on personal financials regardless. If you’re planning equipment financing in the next 12–24 months, ask your CPA how entity structure affects your options.

State costs: California charges an $800 minimum LLC franchise tax plus an additional fee on gross receipts above $250,000. Texas has a franchise tax. Factor in your state’s cost structure before deciding.

What Is the Right LLC-to-S-Corp Timeline for Most Contractors?

Income < $80,000/year: Form an LLC. File Schedule C. Focus on deductions and building the business. No S-corp election yet.

Income $80,000–$150,000: Model the S-corp election. If net positive (accounting for workers’ comp, state costs, overhead), file Form 2553 by March 15 of the applicable year. Set up payroll. Establish Solo 401(k).

Income $150,000+: S-corp election is almost certainly net positive. If you haven’t elected yet, the late election process is available in most cases. Every year you wait is unnecessary SE tax paid.

Income $400,000+: At this level, the structural decisions (salary optimization, retirement vehicles, QBI management) matter more than the basic entity question. The entity structure should already be set.

Can You Change Your Structure Later?

The structure decision is not permanent. You can add the S-corp election to an existing LLC by filing Form 2553. You can also revoke the election if it no longer makes sense (though revocations have consequences and typically can’t be re-elected for five years).

Start simple. Add complexity when the financial case justifies it.

S-corp election break-even analysis for contractors — the full math.

Late S-corp election relief — what to do if you missed the deadline.

This article is educational. Consult a licensed CPA for advice specific to your situation.