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How to Start a Sole Proprietorship in 2026

This guide was last reviewed in October 2026. Tax figures and filing rules below reflect the 2026 tax year; always confirm current details with the IRS or your state before filing.

A sole proprietorship is the simplest business structure in the United States — and for most people, it’s not something you apply for. The moment you start selling goods or services on your own with the intent to make a profit, you generally are a sole proprietor. No state filing, no articles of incorporation, no waiting period.

That simplicity is genuinely valuable — you can start earning this week instead of waiting on paperwork. But it comes with the trade-off the “be your own boss” cheerleading usually skips: there’s no legal wall between you and the business. If the business owes money or gets sued, you owe it — your personal savings, your car, even your house can be on the hook.

This guide covers what actually matters when starting as a sole proprietor in 2026: naming your business (DBA rules), the tax setup that surprises beginners (self-employment tax and quarterly payments), licenses and permits, separating your finances, and the signs you should form an LLC. For the upgrade path, see our step-by-step LLC formation guide.

What a Sole Proprietorship Actually Is (Legally)

Legally, a sole proprietorship isn’t a separate entity at all — the business is you. That single fact drives everything else:

You and the business are one taxpayer. Income flows straight onto your personal return (Schedule C). No corporate tax return, no double taxation.
You and the business are one liability holder. Business debts are your debts; a judgment against the business is a judgment against you personally.
You own all the profits — and all the risk. No partners, no ownership split. Every dollar of profit is yours; every dollar of loss lands on your personal return.
It ends as easily as it begins. When you stop working, the sole proprietorship generally just stops. No formal dissolution filing.

This isn’t a structure most people “choose” — it’s the default. If you’re freelancing, consulting, selling crafts, or doing gig work without forming an entity, you’re already operating as a sole proprietor.

Step-by-Step: Getting Started Checklist

Because there’s no formation filing, the “steps” are about setting up correctly rather than getting permission. Here’s the practical order:

Pick your business name. By default, your business name is your legal name. Anything else usually requires a DBA registration. Details below.
Get an EIN if you’ll hire. The IRS issues them at no cost; many solo owners get one anyway to avoid handing their SSN to clients.
Handle licenses and permits. Your city, county, and state may require a business license, a professional license, a home occupation permit, or industry-specific permits (health permits for food businesses, for example).
Open a separate business bank account — and keep a simple ledger. Not legally required, but practically essential. A dedicated account makes your Schedule C easy math; a spreadsheet with date, amount, and category for every transaction completes the setup.
Plan for taxes from day one. Set aside a percentage of every payment you receive. The number-one shock for new sole proprietors is discovering at tax time that nobody was withholding taxes for them.
Get insured if your work carries risk. Professional liability for service work, general liability for anything involving clients’ property or public events. Without an entity’s liability shield, insurance is your only line of defense.

Naming Your Business: DBA Rules

A DBA — “doing business as,” also called a fictitious or trade name depending on the state — is the name you use publicly when it’s different from your legal name. “Maria Delgado Photography” needs one; “Maria Delgado, freelance photographer” generally doesn’t.

A few things most beginners get wrong about DBAs:

A DBA is not a business entity. It gives you permission to operate under a name — nothing more. No liability protection, no tax benefits.
The rules are state-by-state (sometimes county-by-county). Some states register DBAs at the secretary of state’s office; others handle it at the county clerk level. Filing fees vary widely. Florida requires fictitious name registration with the Division of Corporations ($50), plus publication in a qualifying local newspaper once a week for two consecutive weeks before filing (FLPatelLaw, 2026). New Hampshire registers trade names for $50, Utah for $22, and New Mexico has no DBA registration process at all (LLC University 2026 guides).
A DBA doesn’t give you exclusive rights to the name. Unlike a trademark or an LLC name on file with the state, a DBA filing generally doesn’t stop someone else from using a similar name. If the brand matters, run a trademark search — and if it’s truly central, that’s another sign you may be better off as an LLC.
Renewals exist. Many states require periodic renewal (Florida’s is every five years) or re-filing when ownership details change.

Before paying a filing fee, check whether your state offers or requires DBA registration, and whether you need a name other than your own — plenty of successful sole proprietors just use their legal name.

Taxes, Step by Step: The Part That Surprises Everyone

If you take one thing from this article, let it be this: nobody withholds taxes for you anymore. As a sole proprietor, the federal tax, Social Security, and Medicare your employer used to take out of every paycheck all become your job — and the total is larger than most people expect.

Self-employment tax: the 15.3% you didn’t see before

Self-employment tax is the self-employed equivalent of FICA. As a W-2 employee, you paid 7.65% and your employer paid the other 7.65% on your behalf. Working for yourself, you pay both halves: 15.3% — 12.4% Social Security plus 2.9% Medicare (IRS Schedule SE; confirmed across 2026 analyses from Xero and BestMoney).

Two details:

It’s charged on 92.35% of your net earnings, not 100%. The IRS applies the rate to net profit (revenue minus deductible expenses) multiplied by 0.9235. This adjustment exists so the self-employed get the same effective treatment as employers, who don’t pay payroll tax on their own payroll tax contribution (IRC §1402(a)(12); miniwebtool 2026 guide).
The Social Security portion has a cap. For 2026, the 12.4% Social Security tax applies only to the first $184,500 of net earnings (up from $176,100 in 2025, per the Social Security Administration’s announced wage base; BestMoney 2026). The 2.9% Medicare portion has no cap. High earners also owe an additional 0.9% Medicare tax on self-employment earnings above $200,000 (single) or $250,000 (married filing jointly) (Xero 2026; miniwebtool 2026).

A worked example: $80,000 in 2026 net profit × 0.9235 = $73,880 in taxable SE earnings. SE tax = $73,880 × 15.3% ≈ $11,304 — before a single dollar of federal or state income tax. Budget for taxes from your first invoice.

Two more facts worth knowing:

You owe self-employment tax once net earnings reach $400 in a year. The bar is low on purpose. A side hustle that nets a few hundred dollars triggers the filing requirement (Xero 2026; trakmiles 2026).
Half of your self-employment tax is deductible. You deduct one-half of what you pay in SE tax as an adjustment to income (Schedule 1, Form 1040, line 15). It softens the income tax side, though it doesn’t reduce the SE tax itself (Jupid 2026).

Quarterly estimated taxes: paying as you go

The U.S. tax system is pay-as-you-go. With no employer withholding for you, the IRS requires estimated tax payments four times a year using Form 1040-ES — generally if you expect to owe at least $1,000 in federal tax after subtracting any withholding and credits (IRS General Rule; Jupid 2026; Ramp 2026).

The 2026 due dates (per the 2026 Form 1040-ES calendar; a date that falls on a weekend or holiday shifts to the next business day):

Payment	Income earned	Due date
Q1	January 1 – March 31, 2026	April 15, 2026
Q2	April 1 – May 31, 2026	June 15, 2026
Q3	June 1 – August 31, 2026	September 15, 2026
Q4	September 1 – December 31, 2026	January 15, 2027

Yes, the “quarters” are uneven — Q2 covers two months and Q4 covers four. That’s an IRS quirk, not a typo (Rising & Thriving 2026). Miss a deadline and the IRS can charge an underpayment penalty even if you settle the full balance at filing time (Ramp 2026).

How much to set aside? A common starting rule of thumb: reserve roughly 25–30% of net profit for combined federal taxes, then adjust once you see your actual bracket — state taxes add on top. There’s also a safe harbor: you generally avoid the underpayment penalty if estimated payments cover at least 90% of your current-year tax, or 100% of last year’s tax — 110% if your prior-year AGI was over $150,000 ($75,000 if married filing separately) (Jupid 2026).

Pay through IRS Direct Pay or EFTPS, or mail a check with the Form 1040-ES voucher — and set calendar reminders for each deadline now.

Licenses, Permits, and the Local Stuff

No state “forms you as a sole proprietor,” but you may still need permission to operate — at up to three levels:

Federal: Most businesses don’t need a federal license. Exceptions include industries the government regulates directly — broadcasting, firearms, aviation, trucking, investment advice.
State: Many states require a general business license or tax registration (especially to collect sales tax). Professions like law, accounting, real estate, cosmetology, and contracting need professional licenses regardless of structure.
City/county: Local business licenses are common. If you work from home, check whether your city requires a home occupation permit — some zoning rules restrict client visits, signage, or inventory storage. A $50 permit now beats a cease-and-desist letter later.

Your state’s small business or secretary of state website is the starting point — many have a license finder tool.

Banking and Separating Your Finances

Legally, you can run a sole proprietorship out of your personal checking account. Practically, that’s a terrible idea — and it stays terrible no matter how small you’re starting.

Open a dedicated business checking account. Most banks open one with just a DBA registration and your SSN or EIN. Every transaction in it is business-related by definition — your Schedule C nearly writes itself.

Put every business expense on a separate card, and never mix funds. If the IRS ever asks questions, clean separation of personal and business money is your credibility.

Pay yourself with transfers, not a paycheck — an owner’s draw. It isn’t taxed or deductible; you’re already taxed on the net profit regardless of what you withdraw. Track the draws so you can see what the business is really producing.

Keep receipts and a basic ledger. A spreadsheet with date, amount, category, and vendor is enough to start, with digital copies of receipts. The IRS generally recommends holding tax records for at least three years after filing.

When to Upgrade to an LLC

A sole proprietorship is right for testing, starting small, and keeping overhead near zero. But it has a ceiling — consider forming an LLC when any of these apply:

Your work creates real liability exposure. Clients on your premises, other people’s property or data in your hands, professional advice people act on, or anything someone could be injured by — in all of these, unlimited personal liability stops being theoretical. An LLC creates the legal wall a sole proprietorship lacks.
You’re earning enough that SE tax planning matters. Sole proprietors pay SE tax on every dollar of net profit. An LLC that elects S-corporation taxation lets you split income between salary and distributions — a strategy that can save thousands at higher income levels, but requires payroll and stricter accounting.
Credibility and contracting. Some corporate clients, platforms, and lenders strongly prefer a formal entity. “Smith Consulting LLC” clears vendor onboarding that “Smith, sole proprietor” sometimes doesn’t.
You’re bringing in a partner or raising money. A sole proprietorship can’t issue ownership interests. The moment a second owner enters the picture, you need an LLC or partnership.

Form the LLC, get a new EIN, update registrations, and transfer contracts and bank accounts to the entity name. A single-member LLC is taxed identically to a sole proprietorship by default (Schedule C) — you upgrade your liability position without changing your tax return. See our step-by-step LLC formation guide.

Sole Proprietorship vs. LLC: Side by Side

	Sole Proprietorship	Single-Member LLC
Setup cost	$0 (DBA filing $10–$100 if you use a trade name, varies by state)	$50–$500+ in state filing fees, plus registered agent and possible publication costs
Setup paperwork	None required; DBA registration optional	Articles of organization filed with the state; operating agreement recommended
Liability	Unlimited personal liability — personal assets fully exposed	Personal assets generally shielded from business debts and lawsuits
Federal taxes	Schedule C on personal return; SE tax 15.3% on net earnings (2026)	Default: identical (disregarded entity); can elect S-corp taxation for SE tax savings at higher income
Ongoing paperwork	Minimal — annual tax filing only	Annual/biennial state reports and fees; separate records expected to preserve the liability shield
Credibility	Seen as informal; some clients prefer entities	More professional appearance; easier vendor onboarding
Best for	Testing an idea, freelancing, side income, very low-risk services	Growing revenue, real liability exposure, partners, investors, hired employees

Sole Prop or LLC? The 3-Question Test

If you’re stuck between the two, run through these three questions. They cut through most of the noise:

1. If your business got sued tomorrow, could you afford to lose? Not “would it be likely” — could you absorb the worst case? If a lawsuit would threaten your home, savings, or retirement, unlimited personal liability is a risk you’re actively choosing every month you stay a sole proprietorship. Digital services work (writing, design, remote consulting) is a very different answer than construction, food, childcare, or anything with physical premises.

2. Are you making enough that tax structure matters? Below roughly $40,000–$50,000 in annual net profit, the S-corp election an LLC enables usually doesn’t save enough to justify its payroll and accounting costs — and a single-member LLC is taxed identically to a sole proprietorship anyway.

3. Are you testing or committing? If you’re not sure the business survives six months, the sole proprietorship’s zero cost and zero paperwork are the right call. But if you’re already earning and the business is your livelihood, liability protection is worth the few hundred dollars in formation costs.

Two “yes” answers toward risk, income, or commitment = seriously consider the LLC. Still testing low-risk work at modest income? The sole proprietorship is fine — revisit this test every year as the business grows.

Frequently Asked Questions

Do I need to register a sole proprietorship with the state?

Generally, no — it exists when you start doing business. You may still need a DBA filing, a local business license, and industry-specific permits. “No state registration” doesn’t mean “no rules.”

How much does it cost to start a sole proprietorship?

Often nothing. Realistic costs are the optional items: a DBA filing ($10–$100 by state), a local business license ($25–$100 in many cities), insurance if your work needs it, and a domain name ($10–$15/year).

Can a sole proprietor have employees?

Yes. You’ll need an EIN, and you’re responsible for payroll taxes (withholding, the employer’s share of Social Security/Medicare, unemployment insurance) plus any state employer obligations like workers’ compensation. Just make sure the worker classification is genuinely correct — misclassification penalties are steep.

Do I need an EIN, or can I use my Social Security number?

Both work for a solo sole proprietorship with no employees. Many owners get an EIN anyway — it’s free from the IRS — to avoid handing their SSN to clients and banks. If you hire employees, an EIN is required.

How do sole proprietors pay themselves?

There’s no salary — you transfer money from the business account to your personal account whenever you want (an owner’s draw). It isn’t taxed or deductible; you’re already taxed on the net profit regardless.

What records does a sole proprietor need to keep?

All income, all expenses with receipts, mileage logs, and records of estimated tax payments — a spreadsheet or bookkeeping app is enough. Keep tax records for at least three years after filing.

Can I convert a sole proprietorship into an LLC later?

Yes, and it’s common. Form the LLC as a new entity, get a new EIN, transfer contracts, bank accounts, and registrations into the LLC’s name, and file a final Schedule C for the sole proprietorship period. A single-member LLC is taxed the same as a sole proprietorship by default, so the conversion changes your liability protection without changing how you file.

Is a sole proprietorship or an LLC better for taxes?

At lower income levels, they’re identical — a single-member LLC defaults to being taxed exactly like a sole proprietorship. The LLC’s tax advantage only appears when it elects S-corporation taxation, which splits income between salary and distributions to reduce SE tax. That pays off once profits are consistently in the high five figures; below that, added payroll and accounting costs eat the savings. For a broader starting-a-business overview, see our guide to starting a business in 2026.

Sources

IRS, Schedule SE (Form 1040) and Instructions — self-employment tax rules, 92.35% net earnings base.
Internal Revenue Code §1402(a)(12) — statutory basis for the 92.35% multiplier on net earnings.
BestMoney, “How Much Is Self-Employment Tax? 2026 Rates & Calculator Guide” (2026) — 15.3% rate, 2026 wage base of $184,500.
Jupid, “Self-Employment Tax 2026: Rates, Calculation, and How to Reduce What You Owe” (updated September 2026) — rate breakdown, wage base, half-deduction rule.
Xero US, “Self-employment tax” glossary (2026) — 15.3% rate, $400 filing threshold, $184,500 wage base, additional 0.9% Medicare tax thresholds.
Social Security Administration — 2026 taxable maximum / wage base of $184,500 (announced October 2025).
Kiplinger, “Estimated Tax Payment Deadlines 2026” (2026) — quarterly due dates: April 15, June 15, September 15, 2026; January 15, 2027.
NerdWallet, “Estimated Tax Payments: How They Work and 2026 Due Dates” (updated August 2026) — 2026 estimated tax schedule.
Jupid, “Estimated Tax Due Dates 2026 & 2027” (updated August 2026) — safe harbor rules, $1,000 threshold.
Ramp, “Estimated Tax Payments: How They Work and 2026 Due Dates” (updated August 2026) — 2026 estimated tax schedule.
LLC University, “How to Start a Sole Proprietorship” state guides — New Hampshire, Utah, New Mexico (2026 editions) — DBA/trade name filing fees and procedures.
FLPatelLaw, “Sole Proprietorship in Florida 2026: Pros, Cons, and Risks” (2026) — Florida fictitious name registration ($50 fee, newspaper publication requirement, 5-year renewal).

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Disclaimer

This article is for general educational purposes only and does not constitute legal, tax, or financial advice. Business formation rules, licensing requirements, and tax law vary by state and change over time. Consult a licensed attorney, certified public accountant, or other qualified professional before making decisions about your business structure or taxes.