Sole proprietorship

A sole proprietorship is the simplest legal business structure, owned and run by one person with no separation between owner and entity. The proprietor keeps all profits, pays personal income tax on earnings, and carries unlimited personal liability for debts and lawsuits the business incurs.

Key takeaways

• A sole proprietorship is the default legal form for any unincorporated, one-person venture, requiring no formation paperwork in most jurisdictions.
• The owner reports profits on a personal tax return, which avoids double taxation but exposes personal assets to business debts.
• It remains the most common US business structure, with the IRS counting roughly 28 million non-farm sole proprietorships filing Schedule C in 2021.
• The model fits freelancers, consultants, and small service firms but rarely scales, because it cannot issue shares or take on co-owners.

Most freelancers, side-hustlers, and one-person consultancies operate as sole proprietors by default. The form kicks in automatically the moment you start trading under your own name. Heavier structures like LLCs or corporations only enter the picture when liability, fundraising, or co-ownership becomes a concern.

How it works

A sole proprietorship begins the moment a single person starts selling goods or services for profit, even without filing any formation paperwork. The owner and the business are legally the same entity, so contracts, debts, taxes, and lawsuits all attach directly to the individual.

In the United States, the proprietor files business income on Schedule C of their personal Form 1040 and pays self-employment tax on net earnings. The IRS reported about 28.1 million non-farm sole proprietorship returns for tax year 2021, making it the most-filed business structure in the country.

Most jurisdictions still require local trade licenses, a “doing business as” (DBA) registration if you use a name other than your own, and sales-tax permits where applicable. The US Small Business Administration notes that this is the cheapest structure to set up but the riskiest to operate, because creditors can pursue personal property — your house, car, and savings — to settle business obligations.

Here is how the model compares to the two next-most-common US structures:

The trade-off is stark: zero startup friction in exchange for personal financial exposure.

Examples

Sole proprietorships dominate professional services, creative trades, and small retail. A Manila-based virtual assistant invoicing US clients through Upwork operates as a sole proprietor by default, the same as a Sydney plumber running call-outs from a ute.

In 2024, the US Bureau of Labor Statistics counted about 16.7 million self-employed workers, the bulk of whom report income as sole proprietors. Common examples include independent graphic designers, freelance writers, Etsy sellers, mobile dog groomers, single-shingle accountants, and home-based bakers.

In outsourcing specifically, many Philippine and Eastern European freelancers begin as sole proprietors before scaling into a registered BPO or staff leasing entity. Australia’s “sole trader” and the UK’s “sole trader” are the same concept under different labels, both filing business income through the individual’s personal tax return.

Related terms

• Independent contractor: a self-employed worker hired per project, almost always operating as a sole proprietor for tax purposes.
• Freelancer: a project-based service provider, typically a sole proprietor selling skilled labour directly to clients.
• Limited liability company (LLC): a US legal structure that shields personal assets while keeping pass-through taxation, the most common upgrade path from a sole proprietorship.
• Partnership: an unincorporated business owned by two or more people who share profits, losses, and personal liability.
• Small and medium-sized enterprise (SME): the broader size bracket most sole proprietorships fall inside, defined by employee count and revenue thresholds.
• Self-employment: the working status of any person earning income outside an employer payroll, the umbrella category covering sole proprietors.

FAQ

Is a sole proprietorship the same as being self-employed?

Close, but not identical. Self-employment is the tax status; sole proprietorship is the legal business form. Almost every sole proprietor is self-employed, but a self-employed person can also operate through an LLC or corporation.

Do I need to register a sole proprietorship?

In most US states and many other countries, no formal formation filing is required. You will still need local business licenses, a DBA filing if you trade under a name other than your own, and a sales-tax permit if you sell taxable goods.

How is a sole proprietorship taxed?

Profits flow straight to the owner’s personal tax return. In the US, that means Schedule C plus self-employment tax (Social Security and Medicare) on net earnings, with no separate corporate filing.

What is the biggest risk of a sole proprietorship?

Unlimited personal liability. If the business is sued or cannot pay its debts, creditors can pursue your personal assets — home, car, savings, future wages — because there is no legal wall between you and the business.

When should I switch from sole proprietorship to an LLC?

Most accountants suggest moving to an LLC once you have meaningful liability exposure (employees, premises, large contracts), net profit above roughly $50,000, or co-owners joining. The LLC keeps pass-through taxation while shielding personal assets.

Thinking about scaling beyond solo trade? Talk to Outsource Accelerator about offshore staffing options that grow with your business.