Sole Proprietorship Explained: Taxes, Pros and Cons You Must Know

What Is a Sole Proprietorship?

A sole proprietorship is the simplest business structure — it is an unincorporated business owned by one person. There is no legal separation between the owner and the business, meaning the owner is personally liable for all business debts and obligations. No formal filing is required to create a sole proprietorship; it exists as soon as you start doing business.

Tax Treatment

Sole proprietorship income is reported on Schedule C of Form 1040 and is subject to both income tax and self-employment tax (Social Security and Medicare). The self-employment tax rate is 15.3% on net self-employment income up to the Social Security wage base, plus 2.9% Medicare tax on all net self-employment income above that.

The simplicity of tax filing is a major advantage, but the unlimited personal liability is a significant drawback. Most business advisors recommend forming an LLC instead, which provides similar tax treatment with added liability protection.

Pros and Cons

Pros include zero formation costs, simplest tax filing, full control over business decisions, and no annual reporting requirements to the state. Cons include unlimited personal liability, difficulty raising capital, limited business continuity (the business ends when the owner stops), and self-employment tax on all profits.