Choosing a Business Structure

The main legal structures a small business can take, and what actually changes between them.

The legal structure a business takes changes who is personally on the hook if something goes wrong, and how the business is taxed - two questions worth understanding before registering anything.

The core issue: personal liability

Personal liability means being personally responsible for a business’s debts and legal obligations, with personal assets - a home, personal savings - potentially at risk to satisfy them. The main practical difference between business structures is whether they separate the owner’s personal assets from the business’s liabilities, or leave them combined.

Sole proprietorship: simplest, and most exposed

A sole proprietorship is an unincorporated business owned and run by one person, with no legal separation between the owner and the business. It’s the simplest and cheapest structure to set up - often requiring no formal registration at all - but it also means the owner carries full personal liability for any business debt or lawsuit.

Where the exposure actually shows up

A sole proprietor running a small repair shop who can't pay a supplier invoice, or who gets sued after a customer is injured on the premises, is personally liable for that debt or judgment - the supplier or the court can pursue the owner's personal bank account or property, not just whatever cash the business itself has on hand.

LLC: separating personal and business liability

A limited liability company, or LLC, is a structure that legally separates the owner’s personal assets from the business’s debts and obligations, in most circumstances. If the business itself cannot pay a debt or loses a lawsuit, the owner’s personal assets are generally protected - the loss is limited to what was invested in the business. This protection is the main reason many small businesses register as an LLC once they move beyond the earliest, smallest stage.

Partnership: shared ownership, shared exposure

A partnership is a business owned by two or more people who share profits, losses, and - in the most basic version, a general partnership - personal liability for the business’s obligations, including obligations created by a partner’s decisions. Some structures, like a limited partnership, allow certain partners to limit their liability, generally in exchange for giving up a corresponding amount of management control.

Assuming a good relationship makes a partnership agreement unnecessary

A general partnership without a written agreement leaves critical questions - how profits are split, what happens if one partner wants to leave, who decides what - governed by default rules that may not reflect what either partner actually wants. Most disputes between partners trace back to exactly these unwritten assumptions, which is why a clear written agreement matters even between close friends or family.

Why this connects to the rest of this module

Structure interacts directly with the funding choice from the previous lesson - an LLC or a corporation can issue formal ownership shares to investors in a way a sole proprietorship generally cannot - and with pricing and cash flow decisions covered next, since liability protection changes how much personal risk a founder is actually carrying as the business grows.

Key takeaways

The core question across structures is whether personal and business liability are separated or combined.
A sole proprietorship is simplest to set up but leaves the owner fully personally liable.
An LLC generally separates personal assets from business debts and lawsuits.
A partnership shares both profits and liability, and a written agreement heads off the most common disputes.