Choosing a Business Structure

What business structures are available to a small business?

Small businesses generally choose among a sole proprietorship, a partnership, a limited liability company, and a corporation, with an S-corporation as a tax election layered on top of an LLC or a corporation rather than a structure of its own.

Each structure answers the same three questions differently: who is personally liable for the business's debts, how the business is taxed, and how ownership and control are divided. Sole proprietorships and general partnerships are the simplest to start and offer no liability protection. LLCs and corporations both create a legal entity separate from the owners, which is why most small businesses choose one of the two.

• Sole proprietorship: no separate entity, no liability protection, simplest to run
• General partnership: two or more owners, no liability protection unless structured otherwise
• Limited liability company: separate entity, personal liability protection, flexible taxation and management
• Corporation: separate entity, personal liability protection, formal governance, suited to outside investment

How do you choose between an LLC and a corporation?

Most small businesses choose an LLC for its flexibility and simpler governance, and choose a corporation when the plan involves raising outside investment, issuing stock, or eventually going public.

An LLC protects the owners' personal assets while letting them run the business with far less formal process than a corporation requires: no mandatory board, no required annual meetings, and an operating agreement that can be written to fit however the owners actually want to run things. A corporation brings a more rigid structure, shareholders, a board, and formal recordkeeping, but that structure is exactly what venture investors and later buyers expect to see.

The S-corporation election changes how profits are taxed, not the underlying entity. An LLC or a corporation can elect S-corp tax treatment once it qualifies, which can reduce self-employment tax exposure at a certain profit level. That decision belongs in a conversation with both a lawyer and an accountant, since it depends on numbers a legal guide cannot answer.

Can you change your business structure later?

Yes. A business can convert from one structure to another, for example from an LLC to a corporation, but the conversion has real legal and tax consequences and is more work than getting the structure right at formation.

Conversion generally means filing new formation documents, reissuing ownership interests in the new entity's form, and updating every contract, account, and license that names the old entity. None of that is difficult individually, but it adds cost and creates a window where paperwork can fall out of sync with reality. Choosing well the first time avoids that entirely.

When should a lawyer be involved in choosing a structure?

A lawyer should be involved before you file anything whenever the business has more than one owner, plans to raise outside money, or operates in a field with meaningful liability exposure, since those are exactly the situations where the wrong structure is expensive to fix.

A single owner with a straightforward business can often start with a standard LLC and be well served by it. Add a co-founder, an investor, or a plan to sell the business someday, and the ownership and governance questions multiply fast. Getting those answered in the operating agreement before the business opens its doors is far cheaper than settling them after a disagreement. What to do once the entity exists is covered in what to do after you form your LLC.