Business entity selection affects three things directly: personal liability exposure, federal and state tax obligations, and ongoing compliance costs. A sole proprietorship requires zero formation paperwork but offers zero asset protection. An LLC separates personal assets from business debts through a state-filed operating structure. S-Corps and C-Corps add another layer of tax treatment options, each with distinct filing requirements.
The U.S. Small Business Administration outlines these structures as the primary options for new business owners. The right choice depends on current revenue, risk tolerance, and growth trajectory. A $25K side hustle and a $200K consulting practice have very different optimal structures.
📊 The Short Answer
Sole Prop: Best under $30K. Free, simple, but risky (no liability protection).
LLC: Best for $30K-200K. Liability protection, moderate cost, full SE tax.
S-Corp: Best for $80K+. Saves thousands on SE tax, but needs payroll.
C-Corp: Best for VC-funded high-growth startups. Biggest tax burden for small businesses.
Not sure? Take our 7-question quiz — it recommends the right entity in 60 seconds.
Comparison at a Glance
| Factor | Sole Prop | LLC | S-Corp | C-Corp |
|---|---|---|---|---|
| Setup Cost | $0 | $100-800 | $500-2,000 | $500-2,000 |
| Liability Protection | ❌ No | ✅ Yes | ✅ Yes | ✅ Yes |
| SE Tax Savings | ❌ None | ❌ None | ✅ Yes* | ✅ Yes* |
| Raising Investment | ❌ Hard | Possible | Possible | ✅ Best |
| Paperwork | ✅ Minimal | ✅ Low | ❌ Moderate | ❌ High |
Sole Proprietorship — Simple but Risky
This is the default. If you start doing business without filing any paperwork, you're a sole proprietor. No formation costs, no annual filings, just report your income on Schedule C. Sounds great, right? Well, there's one huge downside: zero liability protection. If your business gets sued, your personal savings, house, and car are all on the line.
LLC — The Sweet Spot for Most Businesses
An LLC gives you the liability protection of a corporation with the tax simplicity of a sole proprietorship. Your personal assets stay separate. Formation costs $100-800 depending on your state. The downside? You still pay the full 15.3% self-employment tax on all your income. But you can always elect S-Corp status later.
S-Corp — Tax Savings for Higher Earners
Once your income passes $80K, S-Corp election starts making sense. You split your income into salary (subject to payroll tax) and distributions (SE tax-free). The savings can be $3,000-6,000/year. The trade-off? Payroll processing, reasonable salary rules, and Form 1120-S each year.
C-Corp — For High-Growth Startups
If you plan to raise venture capital or go public, C-Corp is the standard. It allows unlimited stock classes, equity incentives, and is what investors expect. For a normal small business or freelance operation? It's almost always the wrong choice due to double taxation and high compliance costs.
🎯 Find Your Entity
Answer 7 quick questions and get a personalized recommendation.
🔄 Take the Entity QuizFAQ
Yes, absolutely. Many businesses start as sole proprietorships and form an LLC when they reach $20-30K in income or take on liability risk. It's a straightforward process.
Not directly. An LLC itself doesn't reduce your tax bill. You still pay self-employment tax on all income. However, an LLC gives you the flexibility to elect S-Corp status, which can save thousands on SE tax.
In most states, online filing takes 1-3 business days. Some states (like New York) take 2-3 weeks. Expedited processing is usually available for an extra fee.
Quick Answer
Choose your business entity based on income level and liability needs: Sole Proprietorship ($0 cost, no liability protection, best under $30K), LLC ($100-800 setup, full liability protection, best $30K-200K), S-Corp ($500-2,000 setup, saves $3,000-6,000/year in SE tax, best $80K+), C-Corp (best for VC-funded startups but double taxation for small businesses). Most freelancers and small business owners should start as sole props or LLCs, then consider S-Corp election when net income exceeds $80K. Take the BizCalcLab Entity Quiz for a personalized recommendation.