A sole proprietorship requires no formal formation paperwork with the state. Unlike an LLC or corporation, you don’t file articles of organization or pay a state formation fee. The business exists the moment you start offering goods or services for profit. That simplicity is the main appeal, but there are still a handful of practical and legal steps you need to handle before (or shortly after) you begin operating.
Fictitious Name Registration (DBA)
If you plan to operate under any name other than your own legal surname, you need to file a fictitious business name statement, commonly called a “doing business as” or DBA. So if your name is Maria Chen and you want to call your business “Brightside Photography,” you’d need a DBA filing. If you simply operate as “Maria Chen Photography” using your actual last name, most jurisdictions don’t require it.
DBA filings are handled at the county or city level, not with the state secretary of state’s office. Fees and specific documentation vary by county. Some jurisdictions also require you to publish a notice of the filing in a local newspaper for a set number of weeks and then file proof of that publication with the county clerk. Check with your county clerk’s office to find out the exact process and cost for your area.
Business Licenses and Permits
Most cities and many counties require a general business license or business tax certificate before you can legally operate, regardless of business structure. This is essentially a local government’s way of tracking businesses operating in the area and collecting a small annual fee. Contact your county tax collector or city clerk to find out whether you need one and what it costs.
Beyond a general license, certain professions and industries require state-level occupational or professional licenses. Contractors, cosmetologists, real estate agents, tax preparers, food service operators, and healthcare providers all fall into this category. If your work involves a regulated trade or profession, you’ll need the appropriate license before you start taking clients. Your state’s business licensing portal will list which activities require permits.
Zoning rules also matter if you’re running the business from home. Many municipalities have home occupation permits that regulate signage, foot traffic, noise, and the types of activities you can conduct in a residential area.
Employer Identification Number vs. Social Security Number
A sole proprietor without employees can use a personal Social Security number for all tax purposes. You are not required to get an Employer Identification Number (EIN) from the IRS unless you meet specific criteria. You need an EIN if you:
- Hire employees
- Pay sales or excise taxes
- Open a Keogh or solo 401(k) retirement plan
Even if none of those apply, many sole proprietors get an EIN anyway. It’s free, takes about five minutes through the IRS website, and lets you avoid giving your Social Security number to every client, vendor, or bank you work with. That alone makes it worth doing for identity protection.
Opening a Business Bank Account
You’re not legally required to have a separate business bank account as a sole proprietor, but mixing personal and business funds makes bookkeeping difficult and can create headaches at tax time. A dedicated account gives you a clean record of income and expenses.
To open a business checking account, banks typically ask for your EIN or Social Security number, your DBA filing (if you’re using a business name), a valid photo ID, and any applicable business license. Some banks may also request a brief description of your business activities. Requirements vary by institution, so call ahead or check the bank’s website before your appointment.
Tax Obligations
As a sole proprietor, business income flows directly onto your personal tax return. You report profits and losses on Schedule C (Form 1040), and the net profit counts as taxable income. If your net earnings from self-employment reach $400 or more in a year, you must also file Schedule SE and pay self-employment tax.
The self-employment tax rate is 15.3%, covering both Social Security (12.4%) and Medicare (2.9%). As an employee at a regular job, your employer pays half of those taxes. As a sole proprietor, you cover the full amount yourself, though you can deduct half of the self-employment tax when calculating your adjusted gross income.
You’ll also likely need to make quarterly estimated tax payments. The IRS expects you to pay income tax and self-employment tax throughout the year rather than in one lump sum in April. If you underpay, you may owe a penalty. Estimated payments are due in April, June, September, and January of the following year, using Form 1040-ES.
Insurance and Liability
A sole proprietorship offers no legal separation between you and the business. If the business is sued or can’t pay its debts, your personal assets (home, savings, car) are on the line. This is the biggest tradeoff for the simplicity of the structure.
General liability insurance can help cover claims from third parties, such as a customer who slips and falls at your shop or a client who says your work caused them financial harm. If you provide professional advice or services, errors and omissions insurance (also called professional liability) covers claims of negligence or mistakes. Neither is legally required in most cases, but both can protect you from a single lawsuit wiping out your personal finances. If you hire employees, workers’ compensation insurance is mandatory in nearly every state.
Recordkeeping From Day One
The IRS requires you to keep records that support the income, deductions, and credits you report. For a sole proprietor, that means saving receipts, invoices, bank statements, and mileage logs. There’s no mandated format. A spreadsheet, accounting software, or even a well-organized folder of receipts will work, as long as the records are accurate and accessible.
Good records also help you claim deductions that reduce your tax bill: home office expenses, business mileage, equipment, supplies, software subscriptions, and health insurance premiums, among others. Without documentation, you can’t defend those deductions if the IRS asks questions. Keep records for at least three years after filing the return, though holding them for seven years gives you extra protection in case of an audit.