What Is a Sole Proprietorship? Definition, Taxes, and When to Switch

A sole proprietorship is the default structure for anyone who starts selling goods or services on their own. No filing, no fee, no legal separation between you and the business. The simplicity costs you something: every debt, lawsuit, and tax obligation lands on you personally.

Below we cover what a sole proprietorship is, its advantages and drawbacks, how taxes work on Schedule C, and the seven steps to set one up properly. We also compare it against an LLC, partnership, and corporation, and explain when a retail owner should convert.

What Is a Sole Proprietorship?

A sole proprietorship is an unincorporated business owned and run by one person, with no legal separation between the owner and the business. You keep all the profit, and you carry personal responsibility for each debt, loss, and lawsuit the business produces.

No other structure comes close in numbers. The IRS Statistics of Income counted 31.0 million returns reporting nonfarm sole proprietorship activity for tax year 2022, together producing $2.08 trillion in business receipts and $410.7 billion in profits.

A Sole Proprietorship Is a Default Status, Not a Filing

You do not apply to become a sole proprietor. You become one the moment you start selling goods or services on your own without forming another entity. There is no formation document, no state approval, and no waiting period.

The rule catches a lot of owners off guard. Someone who has been selling handmade furniture out of a garage for three years, invoicing customers and buying supplies, has been running a sole proprietorship the entire time whether or not they ever thought of it that way. The U.S. Small Business Administration treats the status as automatic for any unincorporated one-owner business.

Scale makes no difference to the rule. Anyone working through the steps of starting a retail business is already a sole proprietor from the first sale onward, months before the doors open.

Sole Proprietor vs. Independent Contractor vs. Self-Employed

The three terms overlap but describe different things, and owners mix them up constantly.

• Self-employed describes how you earn: your income comes from your own work, not from a W-2 paycheck.
• Independent contractor describes your relationship with whoever pays you. You perform work for a client under contract instead of as their employee.
• Sole proprietor describes your legal business structure.

An independent contractor who never incorporated is a sole proprietor and is self-employed. All three labels apply at once, which is why the vocabulary feels redundant.

What Happens When You Add a Co-Owner

Bringing in a second owner ends the sole proprietorship. Two or more people sharing profits from an unincorporated business form a general partnership by default, which brings its own filings and a separate tax return.

One exception applies. A married couple who jointly run an unincorporated business and file taxes together may elect qualified joint venture treatment, which lets each spouse report their share on a separate Schedule C instead of filing a partnership return. Rules differ in community property states, so confirm the treatment with a tax professional before you rely on it.

Advantages of a Sole Proprietorship

The appeal of a sole proprietorship comes down to speed, cost, and control. No other structure lets you open for business as quickly or run it with as little administrative overhead.

Fast, Low-Cost Setup

A sole proprietorship is the cheapest business structure to launch because nothing gets filed with the state. An LLC or corporation needs articles of organization, a registered agent, and a state filing fee that runs from $35 in Montana to $500 in Massachusetts, with most states charging between $50 and $150. A sole proprietor skips all of it.

Licenses, permits, or a DBA registration may still apply based on your industry and city. Those obligations attach to the activity, not the entity type.

Fewer Ongoing Fees

Sole proprietors avoid the annual costs that registered entities cannot. States generally charge LLCs a recurring franchise tax, an annual report fee, or both, and some jurisdictions add registered agent fees on top. California is the sharpest example, with an $800 minimum annual franchise tax owed even when the LLC earns nothing.

Massachusetts charges $500 a year for its annual report. A handful of states, including Arizona, Missouri, and New Mexico, charge nothing at all.

Money not spent on maintaining an entity can go toward inventory, equipment, or marketing during the years when cash is tightest.

Full Control Over Decisions

You answer to nobody: no board to consult, no operating agreement to interpret, no officers or members whose consent you need before changing suppliers or adjusting prices. Decisions get made at the speed you can make them.

Privacy comes along with the autonomy. Because nothing gets filed with the state, your ownership, revenue, and internal reporting stay out of public records.

Pass-Through Taxation With No Entity Return

A sole proprietorship pays no business-level income tax. Profit flows directly onto your personal return, so you file once, not twice. Corporations face a separate entity return and, for C corporations, a second layer of tax when profits get distributed.

A Simple Exit

Closing a sole proprietorship takes no state filing. You stop operating, settle outstanding debts, cancel your licenses and permits, and file a final Schedule C. Dissolving an LLC or corporation involves formal paperwork, creditor notices, and a final franchise tax payment in many states.

Disadvantages of a Sole Proprietorship

What a sole proprietorship saves in setup and upkeep, it takes back in personal risk and limited growth options. Five drawbacks stand out.

Unlimited Personal Liability

You are on the hook for each obligation the business takes on, with no ceiling. If the business cannot pay a supplier, a lender, or a court judgment, creditors can pursue your house, your vehicle, your savings, and your other personal assets. Cornell’s Legal Information Institute puts it plainly: the owner holds all assets of the business and owes all its debts.

Liability reaches further than new owners expect. Anything an employee does on the job becomes your personal problem as well. A cashier who injures a customer while moving stock, or a delivery driver who causes an accident on a supply run, creates a claim that lands on you individually, with no entity in between.

Harder to Raise Money

Lenders prefer registered businesses, and sole proprietors feel it. Banks evaluate a sole proprietorship almost entirely on the owner’s personal credit, because no separate entity exists with its own history, balance sheet, or credit file.

Outside investment is effectively off the table. Nobody can buy equity in a sole proprietorship because there are no shares or membership interests to sell. Capital comes from your own savings, personal loans, or supplier credit terms.

Difficult to Sell or Transfer

A sole proprietorship cannot be sold as a going concern. What you own is a collection of assets, including inventory, equipment, and possibly a customer list and trade name, so a sale means transferring those assets one by one, not handing over a business entity.

The structure also ends with you. A sole proprietorship does not survive the owner’s death, which makes succession planning awkward for a family business intended to pass to the next generation.

Credibility Gaps When Hiring and Contracting

Some counterparties treat the structure as a signal of scale. Larger vendors may want an entity before extending net terms, commercial landlords tend to ask for stronger personal guarantees, and experienced staff sometimes read an unregistered business as less stable than one with formal standing.

Wholesale accounts are where the gap shows up first. Distributors expect an EIN, a resale certificate, and some credit history before they open an account, all of which our guide on how to buy wholesale walks through.

Greater Audit Scrutiny

Schedule C filers draw more IRS scrutiny than owners who report through registered entities, particularly at higher income levels and in businesses with substantial cash sales. Clean records, separate accounts, and documented deductions count for more here than in nearly any other structure.

How Sole Proprietorship Taxes Work

A sole proprietor reports business profit on Schedule C of Form 1040 and pays both income tax and self-employment tax on the net earnings. There is no separate business return and no separate business tax bill.

Schedule C and Form 1040

Schedule C captures your gross receipts, subtracts your business expenses, and produces a net profit or loss that flows onto your personal return. Business expenses reduce gross income directly and do not run through itemized deductions, so you claim them with or without itemizing.

One detail surprises new filers: net profit is taxable whether or not you withdraw the cash. Money left in the business account at year end is still income to you.

Self-Employment Tax

Self-employment tax runs 15.3%, covering both halves of Social Security and Medicare. An employee splits those contributions with an employer. A sole proprietor covers both sides.

The rate does not apply to your full profit. Self-employment tax is calculated on 92.35% of net earnings, so a $50,000 profit produces close to $7,065, not the full $7,650. The Social Security portion (12.4%) stops at the annual wage base, set at $184,500 for 2026, which caps that piece at $22,878.

The Medicare portion (2.9%) has no ceiling, and an extra 0.9% applies once earnings pass $200,000 for single filers or $250,000 for joint filers.

You may deduct the employer-equivalent half of what you pay when calculating adjusted gross income, which softens the total. Figures reset each January, so check the IRS self-employment tax page before you budget.

Quarterly Estimated Payments

Sole proprietors pay taxes four times a year, not once. Nobody withholds on your behalf, so the IRS expects estimated payments via Form 1040-ES, generally due in mid-April, mid-June, mid-September, and the following mid-January. Underpayment penalties apply when you fall short across the year.

A practical habit: set aside a fixed percentage of each deposit in a separate account the moment it arrives. Owners who wait until April to think about the bill are the ones who get hurt.

The Qualified Business Income Deduction

Section 199A lets eligible pass-through owners deduct up to 20% of qualified business income, as the IRS qualified business income page sets out. The One Big Beautiful Bill Act, signed in July 2025, removed the sunset that would have ended the deduction after 2025 and made it a permanent part of the tax code.

Three changes take effect for 2026. The phase-in range for the wage and property limits widened from $50,000 to $75,000 for single filers and from $100,000 to $150,000 for joint filers. A new minimum deduction of $400 applies to anyone with at least $1,000 of qualified business income from an active business they materially participate in.

Both of those amounts get indexed for inflation after 2026. Under Revenue Procedure 2025-32, the full deduction is available below $201,750 of taxable income for single filers and $403,500 for joint filers.

Qualified business income is not simply your Schedule C bottom line. You subtract the deductible half of self-employment tax, self-employed health insurance premiums, and retirement plan contributions first. Service businesses in fields such as law, health, accounting, and consulting lose the deduction entirely once taxable income passes $276,750 single or $553,500 joint.

Payroll Taxes Once You Hire

Employees change your tax obligations entirely. Hiring anyone brings an EIN obligation, federal and state payroll tax withholding, unemployment insurance, and quarterly employment tax filings.

Independent contractors carry lighter reporting duties, and the threshold moved recently. The 1099-NEC reporting floor rose from $600 to $2,000 under the OBBBA, so fewer forms go out. The change affects paperwork only. Payments below the threshold remain fully taxable to whoever receives them.

How to Start a Sole Proprietorship

Starting a sole proprietorship takes seven practical steps, none of which involve registering the business itself with your state. The sequence below moves from risk assessment through the operational setup that keeps you out of trouble later.

Step 1: Evaluate Your Risk

Assess your liability risk before anything else, because the answer determines whether a sole proprietorship suits your situation at all.

Ask what a bad day looks like in your line of work. A freelance editor who misses a deadline faces an unhappy client.

A daycare operator whose young charge gets injured could face medical bills and a lawsuit that reaches personal assets. Businesses that invite people onto a physical premises, handle regulated products, or employ staff sit at the higher end of that range.

Step 2: Register Your Business Name (DBA)

File a DBA if you plan to operate under any name other than your own legal name. A DBA, known as a fictitious business name or assumed name in some states, registers the trade name with your county or state.

Say your name is Michelle Baxter and you want to trade as Baxter Sportswear. Selling under your own name calls for nothing. Selling under Baxter Sportswear normally means a DBA filing, and few banks will open an account in a trade name without one. A DBA neither creates an entity nor shields your assets, and it will not stop another business from trademarking a similar name.

Step 3: Get Your Employer Identification Number

Apply for an EIN through the IRS, free of charge, using the online EIN application. An EIN functions as a business equivalent of a Social Security number.

A sole proprietor with no employees may use their Social Security number instead, but getting an EIN is still the better call. Four situations flip it from optional to mandatory: hiring an employee, owing federal excise taxes, setting up a Keogh or solo retirement plan, and filing for bankruptcy.

The IRS sole proprietorships page confirms that owners outside those categories use their Social Security number as the business taxpayer ID. Many banks and vendors also ask for one, and using an EIN on invoices and W-9s keeps your Social Security number off documents that circulate widely.

Step 4: Register for Taxes

Register with each taxing authority that applies to your business, not just the federal one. Federal income tax reporting happens automatically through your personal return, but state, county, and municipal bodies each want their own registration.

Sellers of taxable goods must register with the state revenue department to collect and remit sales tax. Multi-state online sellers may cross economic nexus thresholds and owe registration in several states. Buying goods for resale calls for a resale certificate, which exempts those purchases from sales tax.

Retailers sourcing directly from distributors may need a wholesale license alongside it, which varies by state and product category. Employers add payroll tax registration on top.

Step 5: Obtain Licenses and Permits

Secure your licenses and permits before you open, since operating without them can mean fines or closure. Permits fall into three broad categories: premises licenses tied to your location, occupational licenses tied to your profession, and permits tied to regulated activities.

Regulated retail bears the heaviest burden. Anyone planning to open a liquor store, a tobacco or vape shop, or a CBD retail business faces licensing at the state level and frequently at the county and city level too, each with its own application, fee, and approval timeline.

Costs and waiting periods differ enormously between states. A California liquor license can take months to clear and run well into five figures based on the license type, while other states process applications in weeks for a few hundred dollars.

Step 6: Open a Business Bank Account

Separate your business and personal finances from day one. Commingling funds is the most damaging habit a sole proprietor can develop, and the cleanup gets harder each month you postpone it.

Mixed accounts make bookkeeping unreliable, weaken your position in an audit, and obscure whether the business is actually profitable. The habit also causes real trouble later: owners who convert to an LLC and keep pushing all of it through one account can see the liability shield pierced in court, which defeats the point of forming the entity.

Step 7: Get Business Insurance

Buy general liability coverage, because insurance is the only defense a sole proprietorship offers against claims. An LLC puts a legal barrier between a lawsuit and your personal assets. Without that barrier, a policy is what stands between a claim and your savings.

Coverage needs vary by business. Retailers carry general liability plus property coverage for inventory and fixtures. Employers add workers’ compensation, mandatory in all but a few states. Professional service providers add errors and omissions coverage.

Sole Proprietorship vs. LLC, Partnership, and Corporation

A sole proprietorship trades liability protection for simplicity, while the alternatives ask for paperwork and fees in exchange for a legal barrier between you and the business. The table below compares the four common options side by side.

Sole Proprietorship vs. LLC

The core difference is liability, not taxes. A single-member LLC is treated as a disregarded entity by the IRS, meaning it reports on Schedule C exactly as a sole proprietorship does.

Your federal tax outcome does not change at all, and the IRS entity classification FAQ confirms that a sole owner with no employees and no excise tax liability needs no separate tax ID for the LLC.

What changes is the legal boundary. An LLC exists separately from you, so business debts and judgments generally reach only the assets the LLC owns.

The shield costs a state filing fee, a yearly fee in the majority of states, and the discipline to keep the entity’s finances genuinely separate. For owners weighing the two, the question is rarely about tax savings and nearly always about how much personal risk the business creates.

Sole Proprietorship vs. Partnership

Owner count is the dividing line. A sole proprietorship has exactly one owner; a general partnership has two or more. The structures otherwise share a great deal, including automatic formation and unlimited personal liability for the owners.

Partners split profits, losses, and decision-making authority, which spreads the financial burden and slows down decisions. Partnerships also file their own informational return and issue a Schedule K-1 to each partner, so the tax administration is heavier than a Schedule C.

Sole Proprietorship vs. Corporation

A corporation is a separate legal person, which produces the sharpest contrast with a sole proprietorship. Shareholders are shielded from business liabilities, the corporation continues to exist regardless of who owns it, and ownership transfers through shares.

The cost of that structure is formality. Corporations hold board meetings, keep minutes, appoint officers, and file their own tax returns. C corporations face two layers of tax, once at the entity level and again when dividends reach shareholders, although an S corporation election can eliminate the second layer for eligible businesses.

Sole Proprietorship for a Retail Store

Physical retail changes the sole proprietorship calculation more than any other factor. Advice written for freelancers assumes a business with no premises, no inventory, no staff, and no regulator. A store has all four, and each one creates personal exposure that a consultant working from a laptop never faces.

The Lease Is Personal Either Way, but the Term Is Long

Commercial landlords nearly always demand a personal guarantee from a small business tenant, so forming an entity does not automatically get you out of lease liability. What differs is all that attaches to the premises. Slip-and-fall claims, code violations, and damage disputes hit you directly when the business is a sole proprietorship, and a five-year term gives those risks plenty of time to materialize.

Inventory Credit Carries Personal Debt

Suppliers extend net terms based on your personal credit, because no entity exists to evaluate. A retailer carrying $60,000 in inventory on 30-day terms is personally liable for that balance. One slow quarter, one supplier who tightens terms, and the shortfall turns into a personal debt, not a business one. Opening stock is usually the largest line item in a retail budget, as our breakdown of the cost to open a store lays out.

Employees Multiply Your Exposure

Each new hire widens the liability you absorb yourself. A staff member who sells alcohol to a minor, mishandles a customer’s property, or injures someone while stocking shelves creates a claim that reaches your personal assets. Adding staff also brings the EIN rule, payroll tax duties, and workers’ compensation coverage almost everywhere.

State Licenses Are Issued to You, Not a Business

Here is the detail that catches owners late: regulated retail licenses go to the individual when you operate as a sole proprietor. A liquor license, tobacco permit, or CBD registration in your own name binds to you personally, along with each compliance violation recorded against it.

The sums involved make the attachment worse. What a liquor license costs in Texas looks modest next to quota states, where a limited number of licenses trade on a secondary market for six figures. An asset of that size sitting in your personal name, not an entity’s, complicates financing, insurance, and any eventual sale.

The consequence shows up during conversion. Moving to an LLC tends to mean the license has to be reapplied for under the new entity, not simply reassigned, and regulators do not process those applications quickly.

Liquor license transfers in particular can take weeks or months, varying by state, and some jurisdictions will not let you operate during the gap. Owners who plan to convert should start the license question first and the entity paperwork second.

When to Convert to an LLC

Convert to an LLC when the business starts generating obligations you could not cover out of pocket. Five triggers signal that the moment has arrived:

• You hire your first employee. Their conduct becomes your personal liability.
• You sign a commercial lease. Premises liability and a multi-year obligation enter the picture.
• You take on inventory financing or supplier credit. Business debt grows beyond what your savings cover.
• Revenue reaches a level worth protecting. The annual cost of an LLC becomes trivial against the assets at stake.
• You add a co-owner. The alternative default is a general partnership, which shields nothing at all.

The chief objection owners raise is tax complexity, and it does not hold up. A single-member LLC is taxed exactly as a sole proprietorship by default, reporting on the same Schedule C under identical self-employment tax rules. You gain a liability barrier without changing how you file.

What conversion does demand is follow-through: file with the state, open a bank account in the LLC’s name, move contracts and vendor accounts over, and handle the licensing question described above. Skipping the operational steps leaves you with an entity on paper and no protection in practice.

One point causes needless confusion. A new EIN is not automatic. IRS guidance on new EINs permits a single-member LLC treated as a disregarded entity to keep the EIN from the sole proprietorship, provided it has no employees, owes no excise tax, and has not elected corporate or S corporation treatment. Forming a multi-member LLC, electing corporate taxation, or taking on employees does call for a new number.

Examples of Sole Proprietorships

Sole proprietorships work best for one-owner businesses with modest liability risk, and plenty of higher-risk operations run as sole proprietorships too. The examples below split along that line.

Service Businesses

• Freelance writer or graphic designer
• IT or management consultant
• Photographer
• Personal trainer
• Landscaper or lawn care provider
• Independent bookkeeper

Service providers carry the lightest risk, with no premises, no inventory, and in many cases no staff. Professional liability insurance covers the rest.

Retail Businesses

• Liquor store. State license held in your own name, high-value inventory, and dram shop liability for sales to intoxicated or underage customers. Anyone preparing to open a liquor store should settle the entity question before the license application goes in.
• Smoke or vape shop. Age-verification compliance, state tobacco permits, and excise tax obligations that vary sharply by jurisdiction. The steps to start a smoke shop run through each one in order.
• Convenience store. Long hours, multiple employees, fuel or food handling rules, and thin margins on a wide inventory. Owners who run a convenience store absorb more employee-related risk than any other format on this list.
• CBD retailer. Shifting state regulations, product testing and labeling duties, and banking access that many processors still restrict. Securing a license to sell CBD is a project in itself before the first sale happens.
• Thrift or consignment store. Consigned goods you hold but do not own, plus premises liability on a crowded floor. Modest startup costs are why so many owners start a thrift store without outside capital.
• Gift shop. Seasonal inventory swings and supplier credit concentrated in a few months of the year. Cash flow timing is the hardest part of learning to run a gift shop profitably.

All six retail examples above carry risk that a sole proprietorship parks squarely on the owner. Many operators start this way and convert once the store proves out.

Running a One-Owner Retail Business With the Right POS

Sole proprietors have no staff to delegate to, so the systems they choose have to absorb the work instead. Inventory, reporting, and compliance are all jobs one person handles between customers.

KORONA POS was built for specialty retail, including the liquor stores, smoke shops, convenience stores, and CBD retailers, where one-owner operations are common. Five capabilities do the heaviest lifting when you are the whole team:

• Inventory management that tracks stock levels, reorder points, and supplier orders without manual counts eating your evenings. Disciplined retail inventory management counts double when nobody else is watching the stockroom.
• Reporting and analytics that show which products actually earn their shelf space, so buying decisions rest on data, not instinct. Applied well, retail analytics turns one season of sales history into the next season’s buying plan.
• Employee permissions that limit what each staff member can access once you do hire, which becomes critical when you are not on the floor.
• Integrated payments through the processor you choose. KORONA POS is processor-agnostic, so you are free to negotiate rates instead of accepting whatever comes bundled, then integrate payment processing with whichever provider you land on.
• Offline mode that keeps the register running through an internet outage.

Pricing runs $59, $79, or $99 per terminal per month by plan, billed month-to-month with no contract and no setup fee. Support is in-house, with general hours Monday through Friday and 24/7 coverage for emergencies that stop sales. An unlimited free trial is available if you want to test it against your own inventory before committing.

Should You Stay a Sole Proprietor?

A sole proprietorship earns its place in the right circumstances and becomes a liability in the wrong ones. Three conditions favor staying as you are: your work creates little chance of a lawsuit, you have no employees and no premises open to the public, and your revenue has not yet reached a level where an annual state fee earns its keep.

Three conditions argue for converting: you hold inventory or debt beyond what your personal savings could cover, you employ anyone whose actions could produce a claim, or you operate under a license that regulators could act against.

Successful businesses commonly pass through both phases. Starting as a sole proprietor is a reasonable way to test whether the idea works. Staying one after the business proves out, particularly with a storefront and staff, means carrying risk that a few hundred dollars a year would take off your shoulders.

The information here is general and educational, not legal, tax, or accounting advice. Business structure rules, tax figures, and licensing requirements vary by state and change over time. Consult a qualified attorney or tax professional about your specific situation.

Frequently Asked Questions

Do I Need to Register a Sole Proprietorship?

No. A sole proprietorship forms automatically when you begin doing business on your own, with no state filing required. You may still need a DBA for a trade name, plus licenses, permits, and tax registrations, depending on your location and industry.

Do Sole Proprietors Need an EIN?

Not usually. You need one if you hire employees, file excise or pension plan returns, or file for bankruptcy. Otherwise, your Social Security number works. Most owners get an EIN anyway, since it keeps that number off invoices and W-9s.

Can a Sole Proprietorship Have Employees?

Yes. Sole proprietors can hire W-2 employees and independent contractors without changing structure. Hiring does mean getting an EIN, withholding and filing payroll taxes, and carrying workers’ comp in most states. Whatever staff do on shift becomes the owner’s liability.

How Much Tax Does a Sole Proprietor Pay?

Sole proprietors owe income tax at their personal rate plus 15.3% self-employment tax, which applies to 92.35% of net profit. The Section 199A deduction reduces taxable income for eligible owners. Payments fall due quarterly through Form 1040-ES.

Is a Sole Proprietorship or an LLC Better for a Retail Store?

An LLC usually fits a retail store better. Premises liability, inventory debt, and staff conduct all land on the owner under a sole proprietorship. A single-member LLC shields personal assets while filing the identical Schedule C.

Can I Convert a Sole Proprietorship to an LLC Later?

Yes, and the paperwork side is simple. Register with your state, set up banking under the LLC, and reassign contracts. Your existing EIN often carries over. Licensing is the sticking point, since regulated permits commonly need a fresh application.