Business Entity Types — LLC vs S-Corp vs C-Corp vs Sole Proprietorship
The business structure you choose determines your personal liability, how much tax you pay, how you raise money, and how much paperwork you deal with. Here is exactly when to use each entity type for your business.
Choosing the right business entity is one of the most consequential decisions an entrepreneur makes. The wrong choice can cost tens of thousands in unnecessary taxes, expose personal assets to business liabilities, or prevent you from raising investment capital. The right choice aligns with your current needs while leaving room to grow. Most businesses start as one entity type and convert as they grow — a sole proprietor becomes an LLC, then elects S-Corp status, and eventually converts to a C-Corp if they pursue venture capital. Each transition has tax implications, so planning ahead saves money. The decision depends on four factors: how much personal liability protection you need, how much tax you want to pay, whether you plan to raise outside investment, and how much administrative complexity you can handle. How your entity type affects financing options →
Sole Proprietorship
Structure: The simplest structure — you and the business are the same legal entity. No registration paperwork (beyond any required business licenses and DBA/fictitious name filing). Liability: Unlimited personal liability. Your personal assets (home, car, savings) are at risk if the business is sued or defaults on debts. Taxation: Pass-through taxation. Business income is reported on your personal tax return (Schedule C). You pay self-employment tax (15.3%) on all net income plus your ordinary income tax rate. Fundraising: Cannot sell equity (no shares to issue). Can take out personal loans. Investors will not invest in a sole proprietorship. Best for: Solo businesses earning under $10,000-20,000/year with low liability risk. Freelancers testing a business idea. Businesses that do not need investor funding. Conversion: Easy to convert to an LLC — just form the LLC and transfer business assets, contracts, and bank accounts into the new entity. Cost: $0-100 (DBA filing). Sole proprietor financing options →
Limited Liability Company (LLC)
Structure: A separate legal entity that protects personal assets from business liabilities. Can be single-member (one owner) or multi-member (multiple owners). Governed by an Operating Agreement (recommended but not always required). Liability: Personal assets are protected from business debts and lawsuits. The LLC's creditors can only go after LLC assets. This protection is not absolute — if you personally guarantee a loan or commit fraud, your personal assets are still at risk. Taxation: Pass-through taxation by default. Profits and losses flow through to your personal tax return. Single-member LLC: Schedule C (same as sole prop). Multi-member LLC: Form 1065 partnership return plus Schedule K-1 for each member. You pay self-employment tax on all LLC income (unless you elect S-Corp taxation). LLCs can also elect to be taxed as an S-Corp or C-Corp. Fundraising: Can have multiple members (investors) with ownership percentages defined in the Operating Agreement. Cannot issue stock options. Venture capital investors generally prefer C-Corps and may require conversion. Best for: Most small businesses with revenue above $10,000-20,000/year. Any business with liability risk (physical products, professional services, real estate). Businesses with multiple owners who want flexible ownership structures. Cost: Formation: $50-800 (state filing fee). Annual: $0-800 (state annual report fees) plus registered agent ($100-300/year). States: Delaware and Wyoming are popular for out-of-state formation due to low fees and strong asset protection laws. Most small businesses should form in their home state for simplicity. LLC vs S-Corp — when to elect S-Corp taxation →
S-Corp Taxation
Structure: S-Corp is a tax election, not an entity type. You form an LLC or corporation first, then file IRS Form 2553 to elect S-Corp status. The entity operates normally but is taxed differently. Liability: Same as the underlying entity (LLC or corporation). Taxation: Pass-through taxation with a key advantage: you split income into salary and distributions. Only the salary portion is subject to self-employment tax (15.3%). The distribution portion is not. At $60,000+ in net profit, the payroll costs ($500-1,500/year) are less than the self-employment tax savings. Eligibility: Maximum 100 shareholders, all must be US citizens or residents, only one class of stock. Cannot be owned by corporations, partnerships, or non-resident aliens. Best for: Profitable service businesses and LLCs earning $60,000+/year where the owner actively works in the business. Caveats: You must pay yourself a "reasonable salary" (typically 40-60% of profits). The IRS scrutinizes S-Corps that pay unreasonably low salaries to avoid payroll taxes. Payroll processing adds administrative overhead. Some states (California, New York, Tennessee) impose additional taxes on S-Corps. Cost: Payroll service ($500-1,500/year) plus additional tax filing fees. How entity type affects loan eligibility →
C-Corporation
Structure: A traditional corporation — a separate legal entity with shareholders, directors, and officers. The most formal business structure. Liability: Strongest personal asset protection. Shareholders are generally not liable for corporate debts. Taxation: Double taxation by default — the corporation pays corporate income tax (21% federal) on profits, and shareholders pay personal income tax on dividends. C-Corps can retain earnings at the corporate rate (often lower than the owner's personal rate for profitable businesses). Fundraising: The standard structure for venture capital investment. C-Corps can issue multiple classes of stock, stock options, and convertible securities. Investors prefer C-Corps because the legal framework is standardized and predictable. Most VC-backed companies are Delaware C-Corps. Best for: Startups planning to raise venture capital. Businesses planning to go public. Companies with more than 100 shareholders. Businesses that want to offer employee stock options. International businesses with foreign owners. Cost: Formation: $100-1,000. Annual: franchise tax ($0-2,000 depending on state), registered agent ($100-300), corporate tax return (CPA: $1,000-5,000), board meeting minutes, annual shareholder meetings, and compliance filings. S-Corp conversion: A C-Corp can elect S-Corp status if it meets eligibility requirements — useful if the business is profitable and does not need outside investment. Why VCs require C-Corp structure →
B-Corp and Nonprofit
Benefit Corporation (B-Corp): A for-profit entity that is legally required to consider the impact of its decisions on all stakeholders (employees, community, environment) — not just shareholders. 41 US states recognize B-Corps. Popular with mission-driven businesses (Patagonia, Ben & Jerry's, Allbirds). Taxed the same as a C-Corp by default. Certification by B Lab (the nonprofit that created the B-Corp standard) is separate from legal B-Corp status — many companies are B Lab certified but operate as LLCs or C-Corps. Nonprofit (501c3): A tax-exempt organization for charitable, educational, religious, or scientific purposes. Cannot have owners or shareholders. Profits must be reinvested in the mission, not distributed. Donations to 501c3 organizations are tax-deductible for donors. Nonprofits can apply for grants that for-profits cannot access. The cost: $275 IRS filing fee plus legal fees ($1,000-5,000). Requires ongoing compliance: annual Form 990 filing, board meetings, and conflict of interest policies. Choosing between them: Choose for-profit (LLC, C-Corp) if you want to maximize profit and can achieve your mission within a profit-driven structure. Choose B-Corp if you want legal protection for prioritizing stakeholders over profits. Choose nonprofit if your primary goal is social impact, you rely on donations or grants, and you do not need to distribute profits to owners. Writing a mission statement for your entity →
FAQs
Which entity type is best for a freelancer?
Start as a sole proprietor for the first $10,000-20,000. Switch to an LLC at $20,000+ for liability protection. Elect S-Corp taxation at $60,000+ in net profit to save on self-employment tax. Most freelancers never need a C-Corp unless they plan to raise outside investment or go public.
Can I change entity types later?
Yes. Sole prop to LLC: form an LLC and transfer assets. LLC to S-Corp: file Form 2553. LLC to C-Corp: file Form 8832. C-Corp to S-Corp: file Form 2553 (must meet eligibility requirements). Each conversion has tax implications — converting from C-Corp to S-Corp can trigger built-in gains tax. Consult a CPA before converting.
Do I need a lawyer to form an LLC?
No. You can file Articles of Organization directly with your state's Secretary of State for $50-800. Online services (LegalZoom, ZenBusiness, Northwest Registered Agent) handle filings for $0-399 plus state fees. However, a lawyer can help draft an Operating Agreement (the contract among LLC members) that addresses ownership percentages, profit distribution, management structure, buy-sell provisions, and dispute resolution. For multi-member LLCs, a lawyer is strongly recommended.
What is the cheapest state to form an LLC?
Wyoming ($100 initial, $60 annual), New Mexico ($50 initial, $0 annual), and Nevada ($425 initial, $350 annual) are the cheapest for out-of-state formation. Delaware ($90 initial, $300 annual franchise tax) is the most popular for startups because of its established business law. However, if you operate in California, you must register as a foreign LLC ($800 annual minimum franchise tax regardless of profit). In most cases, forming in your home state is the simplest and cheapest option unless you are raising venture capital.
Should I form a Delaware C-Corp for my startup?
If you plan to raise venture capital, yes. Delaware has a well-established body of corporate law (the Delaware General Corporation Law), a specialized Court of Chancery that handles business disputes efficiently, and investors and VCs expect Delaware C-Corps. If you are not raising VC, form an LLC in your home state. The cost and complexity of a Delaware C-Corp are not worth it for a lifestyle business.