Different Types of Business Entities: Which Structure Fits Your Business?

Your business entity is more than a checkbox on a tax form — it determines who carries legal liability, how your profits are taxed, and even how funders evaluate your business. Many owners start as sole proprietors by default and never revisit the decision, even as the business grows well beyond that structure.

This guide compares the five types of business entities the IRS recognizes — sole proprietorship, partnership, C corporation, S corporation, and LLC — and explains what each means for liability, taxes, paperwork, and your access to capital.

What Are the Main Types of Business Entities?

The five main business entity types are the sole proprietorship, partnership, C corporation, S corporation, and limited liability company (LLC). The right choice comes down to how you want the business to function legally and financially — above all, where liability sits, how income is taxed, and how much administration you’re willing to take on.

Entity	Personal liability protection	Taxation	Setup cost & paperwork	Funding readiness
Sole proprietorship	None — owner personally liable	Pass-through (personal return)	Minimal	Limited — no separation from owner
Partnership	Varies by type (general vs. limited)	Pass-through to partners	Low to moderate	Moderate
C corporation	Yes — liability sits with the company	Double taxation (corporate + dividends)	High	Strong — clean structure, can issue stock
S corporation	Yes — liability sits with the company	Pass-through (no double taxation)	High	Strong
LLC	Yes — liability limited to the business	Pass-through (flexible elections)	Moderate	Strong — most popular for small business

What Is a Sole Proprietorship?

A sole proprietorship is a business owned and operated by one individual, with no legal separation between the owner and the company. That makes it the easiest entity to set up — and one of the most popular in the United States — but it comes at a cost: the owner is personally liable for the business’s taxes, debts, and legal exposure. If the company is involved in a lawsuit, your personal assets can be at risk.

The lack of separation also makes sole proprietorships harder to fund, because underwriters can’t cleanly distinguish the business’s finances from the owner’s.

How Do Partnerships Work?

A partnership is a business in which two or more people operate together, each contributing to — and sharing liability for — the business. Partnerships are easy to create and spread risk across more than one person, which makes them a step up from a sole proprietorship.

There are two common forms. A general partnership requires few legal formalities; partners divide profits, losses, and liabilities among themselves. A limited partnership involves more legal structure: limited partners typically take on an investor role, while general partners run the business and carry more of the liability.

What Is a C Corporation?

A C corporation (“C corp”) is a registered legal entity whose liabilities belong to the business, not the owners — if the company faces a lawsuit, the owners’ personal assets are generally protected. C corps have access to more tax deductions and can issue stock, which is why growth companies raising outside investment often choose the structure.

The trade-offs: C corps are comparatively expensive to form, require ongoing legal and regulatory compliance, and face double taxation — the company pays corporate tax, then shareholders pay tax again on dividends.

What Is an S Corporation?

An S corporation (“S corp”) is another registered entity that keeps liability within the company, but with one key difference from a C corp: taxation. S corps avoid double taxation by passing profits through to the owners’ personal tax returns. Like C corps, they carry meaningful formation costs and must follow specific rules — including limits on the number and type of shareholders — to keep their S corp status.

What Is a Limited Liability Company (LLC)?

An LLC does exactly what its name says — it limits liability to the business rather than the owner. LLCs are less expensive to form and require less documentation than an S corp or C corp, which is why they’re the most popular upgrade for owners moving beyond a sole proprietorship or partnership. You keep control of your business, gain personal asset protection, and take on a manageable amount of administration.

How Does Your Business Entity Affect Funding?

Your entity type shapes your funding options because it determines how cleanly a funder can evaluate your business. A registered entity with its own bank accounts, revenue history, and financial records is straightforward to underwrite; a sole proprietorship, where business and personal finances blur together, is not. That’s one of several reasons to keep business and personal finances separate from day one — and why funding an established LLC or corporation is typically a smoother process.

Entity choice also influences which kind of financing fits. Registered entities build their own credit profiles and qualify for true business products, while unincorporated owners sometimes fall back on personal borrowing — a distinction we break down in personal loans vs. business loans.

How Should You Choose?

Choosing an entity comes down to three factors — liability, taxes, and paperwork — weighed against your growth plans and, if there are multiple owners, a mutual agreement on what benefits the business best. Talk to your CPA or attorney about the tax and legal specifics; they’ll know your situation better than any article can.

The Coast Difference

Whatever structure your business operates under, the right capital partner should meet you where you are. Coast Funding works with established businesses across entity types, pairing each client with a dedicated Business Funding Advisor who takes the time to understand the business behind the paperwork. Our process is streamlined and personalized — because responsible funding starts with understanding how business funding actually works for a business like yours.