How to Apply for Self-Employment: Structure, EIN, and Taxes

To apply for self-employment, you pick a business structure, register your business name where required, get a federal tax ID if you need one, add any state and local licenses that apply to your work, and start paying your own income and self-employment taxes on a quarterly schedule. Nothing about becoming self-employed happens in a single office or on a single form. It’s a short sequence of registrations spread across the IRS, your state’s business filing office, and your city or county, and the order matters because later steps ask for information you generate in earlier ones.

Pick a Business Structure

Your first decision is how the business will be organized for liability and tax purposes. Three structures cover almost every self-employed person.

A sole proprietorship is the default. If you start freelancing, consulting, or selling goods without filing anything with your state, you are already a sole proprietor. No separate legal entity exists, which means your business debts are your personal debts. Formation costs are zero and ongoing paperwork is minimal.

A general partnership forms automatically when two or more people share ownership of a profit-seeking activity, even without a written agreement. Partners share profits, losses, and personal liability. Operating without a written agreement is legal but tends to produce disputes.

A limited liability company requires you to file articles of organization with your state’s business filing office. Those documents name the company, identify a registered agent to accept legal notices, and state whether members or designated managers will run it. The point of an LLC is the legal barrier between your personal assets and business liabilities. Filing fees run from roughly $35 to over $500 depending on the state, and some states add annual franchise taxes or fees on top.

Register Your Business Name

If you plan to work under any name other than your own legal name, most states require you to register a “doing business as” name, sometimes called a fictitious business name or trade name. A sole proprietor named Jane Smith who wants to invoice as “Smith Design Studio” needs a DBA to use that name on contracts and bank accounts.

DBA registration usually happens at the county clerk’s office, though some states handle it at the state level. You search existing names to confirm yours isn’t taken, file a short application, and pay a modest fee. Some jurisdictions also require you to publish a notice in a local newspaper for a set number of weeks. If you formed an LLC or corporation, the name you registered with the state is already your legal business name, so a DBA is only necessary if you want to operate under an additional name on top of that.

Get an EIN From the IRS

An Employer Identification Number is a nine-digit tax ID that functions like a Social Security number for your business. You need one if you hire employees, operate as a partnership or corporation, or pay certain excise taxes. Sole proprietors with no employees can legally use their personal SSN, but many get an EIN anyway to keep their SSN off invoices and business paperwork.

The fastest route is the free IRS online application, which issues the number immediately on approval.1Internal Revenue Service. Get an Employer Identification Number The tool walks through the same questions that appear on the paper Form SS-4: entity type, legal name exactly as it appears on any state formation documents, and the name and SSN of a “responsible party” who controls the business. Fax and mail applications on Form SS-4 also work but take days to weeks. Keep the CP 575 confirmation letter that arrives after approval; the IRS does not reissue originals, and banks and licensing agencies sometimes ask for it.

Handle State and Local Registration

Federal registration handles your tax identity. State and local governments control whether you can actually operate where you live. Requirements vary sharply by location and industry, and this is where new self-employed people most often miss a step.

State Business and Tax Accounts

If you formed an LLC, corporation, or limited partnership, the state already knows about your business from the formation filing. Sole proprietors and general partnerships often need to register separately, particularly if they filed a DBA. Many states also require you to open state tax accounts: sales tax collection if you sell taxable goods or services, and state income tax withholding if you have employees.

State registration forms usually ask for a North American Industry Classification System code, a six-digit number that categorizes your business activity.2United States Census Bureau. North American Industry Classification System You can look up your code on the Census Bureau’s website.

Local Licenses and Zoning

Cities and counties often require a general business license or occupational license before you can operate. The application asks for your business type, estimated annual revenue, employee count, and physical location. Fees range from under $50 to several hundred dollars and are sometimes tied to projected gross receipts.

If you plan to work from home, check the local zoning ordinance before you assume it’s permitted. Residential zoning commonly restricts client visits, signage, inventory storage, and non-resident employees on the premises. Some localities require a conditional use permit or home occupation license for anything involving foot traffic or on-site sales. Regulated trades add another layer on top: food service needs health department permits, construction work needs building permits.

Professional Licenses

Certain fields require a state-issued occupational license in addition to your general business registration. Healthcare, law, accounting, real estate, cosmetology, electrical work, and building contracting all sit in this category. The licensing board for the profession sets the education, exam, and background check requirements, and operating without the license can produce fines or, depending on the state and profession, criminal charges.

Set Up Your Federal Taxes

This is where self-employment breaks hardest from a regular job. No employer withholds anything from what you earn. You calculate and pay income tax, Social Security, and Medicare yourself.

Self-Employment Tax

Self-employment tax covers Social Security and Medicare at a combined 15.3% of your net earnings: 12.4% for Social Security and 2.9% for Medicare.3Social Security Administration. Contribution and Benefit Base That is roughly double what you paid as an employee because you now cover both the employee and employer halves. The Social Security portion applies only to net earnings up to $184,500 in 2026.4Social Security Administration. What Is the Current Maximum Amount of Taxable Earnings for Social Security The Medicare portion has no cap. If net self-employment earnings exceed $200,000 (or $250,000 filing jointly), an additional 0.9% Medicare tax applies to the amount above that threshold.5Internal Revenue Service. Topic No 560, Additional Medicare Tax You can deduct half of your self-employment tax as an adjustment to gross income, which lowers both your income tax and your adjusted gross income.6Internal Revenue Service. Topic No 554, Self-Employment Tax

The Forms You File

You must file Schedule SE with your annual return once net self-employment earnings reach $400.7Internal Revenue Service. Instructions for Schedule SE Form 1040 That threshold is lower than most people expect. Sole proprietors also file Schedule C, which reports business income and expenses; its net profit flows into both your income tax and your Schedule SE calculation.8Internal Revenue Service. About Schedule C Form 1040, Profit or Loss from Business (Sole Proprietorship) Partnerships and multi-member LLCs file a partnership return instead, and the income passes through to each partner’s individual return.

Quarterly Estimated Payments

Because nothing is being withheld, the IRS expects you to pay as you go using Form 1040-ES. The 2026 deadlines are:

  • First quarter: April 15, 2026
  • Second quarter: June 15, 2026
  • Third quarter: September 15, 2026
  • Fourth quarter: January 15, 2027

You can skip the January 15 payment if you file your full 2026 return and pay the balance by February 1, 2027.9Internal Revenue Service. 2026 Form 1040-ES, Estimated Tax for Individuals Each payment covers both income tax and self-employment tax on the earnings from that period.

An underpayment penalty applies if you owe $1,000 or more at filing time and did not pay enough during the year. You are safe if you paid at least 90% of your current year’s tax or 100% of the prior year’s tax, whichever is less. If your prior-year adjusted gross income exceeded $150,000 ($75,000 married filing separately), the prior-year safe harbor rises to 110%.10Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty First-year self-employed people commonly underpay because they forget the full 15.3% self-employment tax sits on top of income tax.

Keep the Registration Alive

Registration is not a one-time event. If you formed an LLC, corporation, or limited partnership, your state almost certainly requires periodic reports confirming your registered agent, principal address, and owners or managers. Filing fees and deadlines vary by state. Missing the deadline can trigger late fees or administrative dissolution, and reinstatement usually costs several times more than filing on time. Check your state’s business filing office for your specific deadline.

Keep records supporting every item of income, deduction, or credit on your returns until the statute of limitations expires. The general rule is three years from the date you filed. If you underreported income by more than 25% of what your return shows, the window extends to six years. If you never filed, there is no time limit. Employment tax records, if you have employees, must be kept at least four years after the tax is due or paid, whichever is later.11Internal Revenue Service. How Long Should I Keep Records In practice, that means saving receipts, invoices, bank statements, and mileage logs for at least three years. Digital copies work if they are legible and organized. Without records, the IRS can disallow deductions outright, and you will owe the tax plus interest and penalties with nothing to push back with.